CN113714761B - Heat exchange tube bundle tube penetrating device - Google Patents

Abstract

The invention belongs to the field of heat exchanger processing, and particularly relates to a heat exchange tube bundle tube penetrating device. The invention relates to a frame, which is provided with an open accommodating space; the fixed conveying unit is positioned in the open accommodating space; the pressing conveying unit is positioned in the open accommodating space and is positioned at the upper part of the fixed conveying unit, and an adjustable space for accommodating the heat exchange tube is formed between the pressing conveying unit and the fixed conveying unit; and the driving unit is used for driving the fixed conveying unit and the pressing conveying unit to move. The invention has the following beneficial effects: the continuous pipe penetration of the heat exchange pipe is realized, the labor intensity of personnel is reduced, the number of operators is reduced, the cost is saved, the pipe penetration efficiency is improved, and the speed of producing the heat exchanger is increased.

Description

Heat exchange tube bundle tube penetrating device

Technical Field

The invention belongs to the field of heat exchanger processing, and particularly relates to a heat exchange tube bundle tube penetrating device for a heat exchanger.

Background

A heat exchanger (also called heat exchanger) is a device that transfers part of the heat of a hot fluid to a cold fluid. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied.

The heat exchanger comprises a plurality of categories, wherein common types of tube heat exchangers comprise a fixed tube plate heat exchanger, a floating head heat exchanger and a U-shaped tube heat exchanger, the tube heat exchanger comprises different types of baffle plates such as square or round baffles according to actual requirements, the baffle plates are plates for changing the flow direction of fluid and are commonly used for designing a shell side medium flow passage of the tube heat exchanger, and the number of the baffle plates is determined according to the properties and flow of the medium and the size of the heat exchanger. The baffle is arranged on the shell side, and can improve the heat transfer effect and play a role in supporting the tube bundle. The baffle plate has two types of bow and disc-ring, the bow baffle plate has three types of single bow, double bow and three bow, dozens to ten thousand plate holes are arranged on the baffle plate, a heat exchange tube is arranged in each plate hole, and two ends of the heat exchange tube are fixed on the plate.

In the prior art, the installation of the heat exchange tube mainly depends on manpower. The positions of the heat exchange plates and the baffle plates are fixed, the plate hole positions of the plates are kept to be basically aligned, and the heat exchange tubes are manually aligned to the mounting holes of the baffle plates at the foremost ends and are inserted one by one. The technical problems of the installation mode in the prior art include:

the installation effectiveness is low: the heat exchanger needs to be installed manually one by one, so that the time consumption is high when the heat exchanger faces dozens of or more than ten thousand of installation plate holes, and the production efficiency of the finished heat exchanger is seriously influenced;

the labor is wasted: especially, when the heat exchange tubes are inserted between the plates, due to the self weight of the heat exchange tubes (the heat exchange tubes have a head lowering phenomenon) or due to inaccurate alignment of the heat exchange plates, the heat exchange tubes are difficult to ensure smooth insertion between the plates, and the positions of the heat exchange tubes need to be adjusted manually to realize alignment of plate holes between the plates one by one; in addition, the installation can be completed only by means of hammer smashing and other modes under the influence of frictional resistance between the heat exchange tube and the plate hole. The heat exchange tubes are slender and large in number, the number of the baffle plates is large, the manual tube penetrating operation is large in physical consumption, and the production efficiency is low.

In the prior art, the heat exchanger processing field does not have automatic poling equipment. Compared with other pipe fittings, the heat exchanger pipe fitting has the characteristics of long length, large quantity and large weight, and when the automatic pipe penetrating is realized, the problems of low head of a heat exchange pipe, high collimation degree of a conveying direction, alignment of the heat exchange pipe and a pipe hole, stable clamping of the heat exchange pipe and the like in the pipe penetrating process are solved.

Chinese patent CN102601604B discloses a mechanical pipe penetrating machine applied to the field of chemical containers. Its poling machine includes: the rubber-coated transmission wheel group clamps the pipe fitting through the upper and lower matched rubber-coated transmission wheel groups and supports the straight pipe to be inserted through the straight pipe positioning pulley frame. The rubber-coated transmission wheel set is fixedly arranged on the upper cover and the lower cover respectively, and the straight pipe positioning pulley frame only has a supporting function on the straight pipe and does not have an auxiliary clamping function; the pipe threading machine disclosed in this patent has the following disadvantages: the clamping action end of the straight pipe is only the part of the rubberizing driving wheel, the action area is small, the stable clamping and conveying effect of the pipe fitting is difficult to guarantee, and the rubberizing driving wheel is not suitable for a heavy heat exchange pipe, in addition, the rubberizing driving wheel adopts an upper and lower fixed mounting structure, and the clamping degree cannot be adjusted; for the above reasons, it is not possible to use tubes which are passed through by a heat exchanger.

Chinese patent CN203714960U discloses a drip tube traction device, the application field of which is drip irrigation tube processing field, and is used for drip irrigation tube rolling operation. The drip irrigation pipe clamping device is characterized in that the upper pressing wheel group and the lower supporting wheel are matched up and down to clamp a drip irrigation pipe, a conveying belt is arranged on the pressing wheel group and the lower supporting wheel, and a V-shaped groove is formed in the conveying belt. The drip irrigation pipe belongs to a soft pipe, and the traction device disclosed by the patent mainly plays a role in conveying the drip irrigation pipe, so that a pipe inserting process does not exist. The technical content disclosed in this patent is not applicable to heat exchange tube insertion tubes because: because what carry is the soft pipe (the pipe itself has the deflection), and need not guarantee direction of delivery's precision, do not need upper and lower clamping structure to have higher tight fit degree of clamp, and also need not carry out special design to the shape of notch on the conveyer belt.

In addition, the heat exchange tube penetrating machine can simultaneously penetrate a plurality of heat exchange tubes, and the clamping and conveying strength of the conveying mechanism is limited, so that the uniform clamping force on each heat exchange tube is hardly ensured. This just leads to the fact easily, and the heat exchange tube that the clamp is measured closely is high, carries stably, and the heat exchange tube that the clamp is measured closely lowly can appear carrying the hysteresis, causes the multitube to carry asynchronous.

When being used for the heat exchange tube poling with conveying mechanism, if the problem of synchronism can not be solved, will cause the heat exchange tube can not penetrate the baffling board in step, the heat exchange tube of lag transport needs manual operation to accomplish to spread into the baffling board, perhaps, the heat exchange tube direction of delivery of lag transport takes place the skew, causes and can not insert baffling board heat transfer hole.

Based on the above, the applicant believes that the pipe conveying structure in the prior art is not suitable for the pipe penetrating operation of the heat exchanger.

Disclosure of Invention

The invention aims to solve one of the technical problems and provides automatic heat exchanger tube penetrating equipment so as to reduce the manual intervention degree, simultaneously realize simultaneous and synchronous insertion of a plurality of heat exchange tubes and improve the production efficiency of a heat exchanger.

In order to achieve the above object, the present invention provides a tube inserting device for a heat exchange tube bundle for a heat exchanger, comprising:

the frame is provided with an open accommodating space;

the fixed conveying unit is positioned in the open accommodating space;

the pressing and conveying unit is positioned in the open accommodating space and is positioned at the upper part of the fixed conveying unit, and an adjustable space for accommodating a heat exchange tube is formed between the pressing and conveying unit and the fixed conveying unit;

the driving unit is used for driving the fixed conveying unit and the pressing conveying unit to move;

the fixed conveying unit and the pressing conveying unit are both arranged to be of a two-layer structure, one outer layer is arranged to be a crawler plate structure, the other inner layer is arranged to be a chain structure, a soft base plate is arranged on the crawler plate structure, and a groove corresponding to the shape of the heat exchange tube is formed in the soft base plate.

In some embodiments of the invention, the apparatus further comprises at least one set of guide structures, the guide structures comprising:

a guide structure shell: the device comprises a first side wall and a second side wall which are oppositely arranged at intervals, wherein a first shaft mounting structure and a second shaft mounting structure are arranged on the first side wall at intervals along the height direction of the first side wall, and a first shaft mounting structure and a second shaft mounting structure are correspondingly arranged along the height direction of the second side wall;

the first roller assembly: the wheel assembly comprises a first wheel shaft and a first wheel roller arranged on the wheel shaft, wherein a plurality of wheel grooves are arranged on the first wheel roller at intervals, and two ends of the first wheel shaft are respectively arranged in a first shaft mounting structure of a first side wall and a second side wall and can rotate relative to the shaft mounting structures;

the second roller assembly: the wheel assembly comprises a second wheel shaft and a second wheel roller arranged on the wheel shaft, wherein a plurality of wheel grooves are arranged on the second wheel roller at intervals, and two ends of the second wheel shaft are respectively arranged in second shaft mounting structures of a first side wall and a second side wall and can rotate relative to the shaft mounting structures;

the first wheel roller groove is matched with the second wheel roller groove to form a wheel groove gap which is used as a pipe clamping space; a pipe fitting inlet and a pipe fitting outlet are respectively formed on two opposite sides of the guide structure shell and the clamping space; the wheel well gap is opposite the groove.

Some embodiments of the present invention include two sets of guiding structures, and a transition guiding structure;

the transition guiding structure comprises:

the base body is arranged at the inlet end of the pipe fitting of the guide structure shell, and a through hole is formed in the base body along the direction from the first end part to the second end part;

the first guide structure and the second guide structure are connected through the transition guide structure, and the through hole is aligned with the wheel groove gap of the first guide structure and the wheel groove gap of the second guide structure, so that the pipe fitting can pass through the second guide structure, the transition guide structure and the first guide structure; the wheel-slot gap of the first guide structure is aligned with the groove.

In some embodiments of the present invention, a pushing plate is disposed on a side wall of a guiding structure housing on a side of the guiding structure where a pipe outlet of the guiding structure is located, the pushing plate is coupled to the guiding structure housing on the outlet side of the pipe, a coupling position of the pushing plate and the guiding structure housing is located above the pipe outlet, and the pushing plate is configured to have a size: when the guide structure rotates downwards, the guide structure can cover the outlet of the pipe fitting and is attached to the side wall of the guide structure shell; the guide structure provided with the push plate is arranged at the output ends of the heat exchange pipes of the fixed conveying unit and the pressing conveying unit, and the wheel groove gaps are aligned with the grooves.

In some embodiments of the invention, the backing plate is made of elastic materials and comprises a backing plate body, a plurality of grooves are arranged along the width direction of the body, each groove is a radian groove with the radian smaller than 180 degrees, and a straight part is arranged between every two adjacent grooves.

In some embodiments of the present invention, an active gripping tube feeding mechanism is further included, comprising:

the frame is provided with an accommodating space;

the cross beam is arranged at the top of the frame;

the pipe pressing mechanism is arranged in the accommodating space;

one end of the pipe pressing driving mechanism is connected with the cross beam, the other end of the pipe pressing driving mechanism is fixedly connected with the pipe pressing mechanism, and the pipe pressing driving mechanism drives the pipe pressing mechanism to move along the frame relative to the cross beam;

the auxiliary pipe pressing mechanism is fixedly arranged below the frame relative to the pipe pressing mechanism;

each group of rollers comprises an auxiliary roller arranged on the auxiliary pipe pressing mechanism and a driving roller arranged on the pipe pressing driving mechanism, and a pipe pressing adjustable space is formed between the auxiliary roller and the driving roller;

the roller driving piece is connected with the driving roller and drives the driving roller to rotate;

and the pipe outlet end of the pipe pressing adjustable space is aligned with the groove.

In some embodiments of the present invention, the frame of the active pipe clamping and conveying mechanism and the frame of the pipe penetrating device are mounted on the same multi-degree-of-freedom motion platform, and the two frames can be driven to move synchronously.

In some embodiments of the present invention, the apparatus further comprises a roller conveyor comprising:

a base;

the support structure is as follows: is arranged on the base;

a roller carrier: at least two groups of sliding fit structures are arranged between the carrier roller frame and the support structure along the length direction of the carrier roller frame, and the carrier roller frame can generate relative motion with the support along the sliding fit structures;

carrying out roller: the number of the supporting roller frames is a plurality of, and the supporting roller frames are arranged in parallel at intervals along the length direction of the supporting roller frames and are arranged on the supporting roller frames;

a motion driving mechanism: the supporting roller frame is connected with the supporting roller frame so as to drive the supporting roller frame to move along the bracket;

the conveying direction of the carrier roller conveying mechanism is opposite to the groove.

In some embodiments of the present invention, a laser sensing device is installed on the pipe penetrating device frame, and a light emitting direction of the laser sensing device faces the base; the laser sensing device can emit laser and receive side end surface refracted light;

a lifting driving mechanism is arranged below the base;

the pipe penetrating device further comprises a control system, wherein the control system receives a sensing signal of the laser sensing device and controls the lifting driving mechanism to act on the premise that the laser sensing device does not receive a refraction light signal so as to adjust the height of the base.

In some embodiments of the present invention, the apparatus further comprises a synchronous conveyance detection control mechanism, the synchronous conveyance detection control mechanism comprising:

shaft: the pressing conveying unit is arranged on the pipe penetrating device and is positioned at the output ends of the pressing conveying unit and the fixed conveying unit;

a guide plate: the number of the heat exchange tubes is a plurality of heat exchange tubes, the heat exchange tubes are matched with the number of the heat exchange tubes which can be conveyed by the tube penetrating machine at the same time, and the heat exchange tubes are rotatably connected with the shaft;

a detection wheel: each detection wheel can be contacted with the top of one conveyed heat exchange tube;

the coding sensor comprises: the rotating data of the peripheral surface of each detection wheel is detected at the radial extension end of the peripheral surface of each detection wheel;

and the pipe penetrating device control system is connected with each coding sensor to acquire rotation data of each detection wheel.

In some embodiments of the invention, the detection wheel comprises:

a first wheel body: is a gear;

a second wheel body: the roller is coaxially connected with the first roller body and is contacted with the top of the conveying heat exchange pipe;

the code sensor is located at the radial extending end of the circumferential surface of the first wheel body.

In some embodiments of the invention, the output ends of the pressing conveying unit and the fixed conveying unit are provided with a guide mechanism, the shaft is arranged on a shell of the guide mechanism, and the detection wheel is positioned at the outlet end of the pipe fitting and is contacted with the heat exchange pipe.

In some embodiments of the present invention, the outlet end of the pipe of the guiding mechanism is provided with an excess guiding mechanism, the upper end face of the base body of the excess guiding mechanism is provided with a hollow portion, the hollow portion is communicated with the through hole and has a size configured to expose all output products, and the detection wheel is located in the hollow portion so as to enable the detection wheel to contact with the products to be conveyed.

In some embodiments of the present invention, the apparatus further includes a clamping unit disposed on the fixed conveying unit or the pressing conveying unit, and configured to drive the fixed conveying unit or the pressing conveying unit to move up and down along the frame, wherein the clamping unit includes:

the upper clamping roller beam is arranged on the inner side, close to the fixed conveying unit, of the pressing conveying unit and is connected with the frame in a sliding mode;

the upper clamping roller is in contact connection with the pressing conveying unit through an upper clamping roller beam;

the lower clamping roller beam is arranged on the inner side, close to the pressing and conveying protection mechanism, of the fixed conveying unit and is fixedly connected with the frame;

the lower clamping roller is in contact connection with the fixed conveying unit through a lower clamping roller beam;

a sliding mechanism; the sliding mechanism is arranged between the upper clamping roller beam and the frame, and drives the upper clamping roller beam to move up and down along the frame;

the clamping driving mechanism is arranged at the top of the frame, the driving end of the clamping driving mechanism is connected with the sliding mechanism, the clamping driving mechanism drives the sliding mechanism, the sliding mechanism drives the pressing conveying unit to move up and down along the frame through the upper clamping roller beam, so that the pressing conveying unit and the adjustable space between the fixed conveying units can continuously clamp and convey the heat exchange tube, and the fixed conveying unit and the adjustable space for accommodating the heat exchange tube are formed between the pressing conveying units.

In some embodiments of the invention, the driving unit comprises:

the upper driving roller is arranged on one side of the pressing and conveying unit, and an upper driving chain wheel is arranged in the upper driving roller;

the lower driving roller is arranged on one side of the fixed conveying unit, which is at the same position as the upper driving roller, a lower driving chain wheel is arranged in the lower driving roller, and the lower driving chain wheel is connected with the upper driving chain wheel through a transmission mechanism;

the driving part is connected with the upper driving chain wheel, the driving part drives the upper driving chain wheel to rotate, and the upper driving chain wheel drives the lower driving chain wheel to rotate reversely through the transmission mechanism, so that the fixed conveying unit and the pressing conveying unit are driven to move reversely and synchronously.

In some embodiments of the invention, the transmission mechanism comprises:

the two driving wheels are respectively coaxially arranged with the upper driving chain wheel and the lower driving chain wheel and synchronously rotate with the connected driving chain wheels;

the two transition wheels are meshed and mounted, are positioned between the two driving wheels and are meshed and connected with the two driving wheels;

one side of the swing arm is connected with the center of the driving wheel, and the other side of the swing arm is connected with the center of the transition wheel;

and the connecting plates are positioned on two sides of the two transition wheels.

Compared with the prior art, the invention has the advantages and positive effects that:

1. the automatic continuous pipe penetrating device has the advantages that the automatic continuous pipe penetrating of the heat exchange pipe is realized, the pipe penetrating of the plurality of radiating pipes can be completed simultaneously, and the manual intervention degree is reduced, so that the labor intensity of personnel can be reduced, the number of operating personnel is reduced, the labor cost is saved, the pipe penetrating efficiency is improved, the manufacturing speed of the heat exchanger is accelerated, and the economic benefit is improved. Furthermore, the invention simultaneously penetrates a plurality of heat exchange tubes into the plate holes of the baffle plate of the heat exchanger at one time, so that the tube penetrating speed is high, the manufacturing efficiency of the heat exchanger is improved, the cost is saved, and the economic benefit is improved.

2. The clamping grooves of the clamping conveying unit and the fixed conveying unit adopt flexible clamping, and a heat exchange tube automatically penetrates in the tube inserting process, so that the scratch, deformation and damage of the heat exchange tube are effectively avoided; the upper clamping groove and the lower clamping groove are both provided with notches of less than 180 degrees, and the interference fit between the clamping grooves can be realized by adjusting the clamping fit between the pressing conveying unit and the fixed conveying unit, so that the clamping degree of the heat exchange tube can be ensured, the conveying flatness of the heat exchange tube can be ensured, and the alignment of the heat exchange tube and a plate hole is facilitated;

3. the clamping conveying unit and the fixed conveying unit adopt a crawler plate structure. Compare the upper and lower centre gripping cooperation mechanism of conveyer belt, through the cooperation of the flexible backing plate of rigid grip-pad cooperation, can guarantee better tight cooperation degree of pressing from both sides, can improve single intubate quantity.

4. Further, through the matching of the front and rear guide mechanisms, the heat exchange tubes can be conveyed and guided when entering the pressing and conveying unit and being output from the pressing and conveying unit, so that the alignment of the heat exchange tubes and the plate holes is ensured;

5. through setting up the supplementary guide of direction awl, can guarantee even the head of heat exchange tube deviates from the normal scope and still can guarantee the alignment degree of heat exchange tube and diaphragm orifice to guarantee the continuity of poling. Generally, the normal range refers to the deviation of the heat exchange tube head being smaller than the control radius;

6. the stable front-end conveying of the heat exchange tube can be realized through the matching of the roller type conveying mechanism and the active clamping tube conveying mechanism;

7. after the position of the device is adjusted according to various specification parameters of the baffle plate, one group of heat exchange tubes can be automatically aligned with each hole of the baffle plate and penetrate through the holes, and after one group of tubes penetrate through the holes, the other group of heat exchange tubes are automatically aligned to the position to be penetrated through by program control, so that semi-automatic tube penetration is realized, and the working efficiency is improved.

8. The synchronous detection control mechanism is configured, the rotation data of the detection wheels are obtained through the encoder, and whether each product is synchronously conveyed or not can be judged according to the comparison of the rotation data of the multiple detection wheels, so that the machine is stopped and adjusted under the condition of delayed conveying. The detection wheel adopts a double-wheel body structure, has double functions, is partially used for assisting the detection of the encoder, is partially used for assisting the clamping of the conveyed product, and can be driven to rotate by the conveyed product while clamping.

9. The synchronous detection control mechanism comprises a tension spring structure, and can position the detection wheel to ensure the contact between the detection wheel and a conveyed product and further ensure the accuracy of a detection result.

Drawings

FIG. 1 is a first schematic structural diagram of a tube penetrating device of a heat exchange tube bundle for a heat exchanger;

FIG. 2 is a second schematic structural view of a tube penetrating device of a heat exchange tube bundle for a heat exchanger;

FIG. 3 is a schematic structural view of a compacting and conveying unit;

FIG. 4 is a schematic structural view of the transmission mechanism;

fig. 5 is a schematic structural diagram of the track shoe.

FIG. 6 is a first perspective structural view of the guiding mechanism;

FIG. 7 is a second perspective structural view of the guiding mechanism;

FIG. 8 is a schematic view of a guide mechanism configured with a transition guide mechanism;

FIG. 9 is a first perspective view of a two-set guiding mechanism cooperating structure;

FIG. 10 is a second perspective view of the two sets of guiding mechanisms;

FIG. 11 is a first perspective structural view of a guide mechanism with a push plate;

FIG. 12 is a schematic view of a second perspective of the guiding mechanism with a pushing plate;

fig. 13 is a schematic structural view of the first embodiment of the pipe conveying mechanism to which the guiding mechanism is applied;

fig. 14 is a schematic structural view of a second embodiment of a guide mechanism applied to a pipe conveying mechanism;

fig. 15 is a schematic structural view of the roller conveyor.

FIG. 16 is a partial enlarged view of the structure of the carrier roller frame and the bracket;

FIG. 17 is a schematic view of a roller conveyor with guards;

FIG. 18 is a first schematic view of an active clamp tube delivery mechanism;

FIG. 19 is a second schematic view of the active clamp tube feeding mechanism;

FIG. 20 is a schematic view of the structure of the tube bundle guiding mechanism;

FIG. 21 is a first structural view of a tube pressing mechanism;

FIG. 22 is a structural view II of the pipe pressing mechanism;

FIG. 23 is a cross-sectional view of the adjustment member;

FIG. 24 is a first structural view of a connecting plate;

FIG. 25 is a second schematic structural view of a connecting plate;

FIG. 26 is an enlarged view of the pin through hole and the stud through hole;

FIG. 27 is a schematic view of the pressing drive mechanism;

FIG. 28 is a schematic view of the construction of a threading line;

FIG. 29 is a schematic view of a guide cone structure;

FIG. 30 is a structural diagram of a base with a scissor lift mechanism in a lowered position;

FIG. 31 is a structural view of a base configured with a scissor lift mechanism in a raised position;

FIG. 32 is a schematic view of the pedestal and the laser sensing device;

FIG. 33 is a schematic view of the pedestal and the laser sensing device;

FIG. 34 is a schematic view of a first perspective of the synchronous feeding detection control mechanism;

FIG. 35 is a schematic view of a second perspective structure of the synchronous conveying detection control mechanism;

FIG. 36 is a schematic view of a third perspective structure of the synchronous conveying detection control mechanism;

FIG. 37 is a schematic view of a fourth perspective of the synchronous feeding detection control mechanism;

FIG. 38 is a schematic view of a fifth perspective of the synchronous feeding detection control mechanism;

FIG. 39 is a schematic view of the detection wheel mounting structure;

FIG. 40 is a schematic view of the detection wheel structure;

FIG. 41 is a schematic view of a synchronous feeding detection control mechanism configured with a push plate;

in the above figures:

1-a compaction conveying unit; 2-a transmission mechanism; 3-fixing the conveying unit; 4-heat exchange tube; 5-a clamping drive mechanism; 6-a guide rail; 7-a track shoe; 8-upper drive sprocket; 9-a tension chain wheel; 10-a four-column frame; 11-a guide wheel; 12-upper clamping roller beam; 13-upper clamping rollers; 14-a chain; 15-soft backing plate; 1501-bolt holes; 17-a swing arm; 18-a connecting plate; 19-a transition wheel; 20-driving wheels;

21-guide housing, 2101-first side wall, 21011-first shaft slot, 21012-second shaft slot, 2102-second side wall, 2103-fixture, 2104-wheel slot gap, 2105-tube inlet, 2106-tube outlet; 2201-a first wheel shaft, 2202-a first wheel roller; 2301-a second axle, 2302-a second wheel roller; 24-base, 2401-through hole; 2402-an empty part; 25-a first set of guide structures; 26-a second set of guide structures; 27-a first transition structure; 28-a second transition structure; 29-a push plate; 210-a tubular conveying mechanism; 212-a pushing mechanism;

31-a base; 32-a carrier roller frame; 3201-first slider; 33-carrying rollers; 34-idler seats; 35-a motor; 36-a lead screw; 37-a slide block; 3801-a first scaffold; 3802-a second scaffold; 3803 a first i-beam; 3902-guard plate; 39011 feet; 39012 longitudinal beams; 310 a frame; 311 a cross beam; a 312 pipe crimping mechanism; 313 pressing the tube driving mechanism; 314 auxiliary pressure tube mechanism; 31501 rolling; 31502 roller driving member; 31601-a housing; 31602-a first side wall; 1603 — second side wall; 31604-first axle mounting structure; 31605-a second axle mounting structure; 31606-a third axle mounting structure; 31607-a fourth shaft mounting structure; 31608-a first roller assembly; 1609-a second roller assembly; 31201-a connecting plate; 31202-a mounting plate; 31204-an adjustment member; 312041-columnar structure; 312042-upright post; 312043-spring; 312044-Pin through hole; 312045-stud through holes; 312011-concave structure; 312012-through holes; 31301-a through via; 31302-an oil inlet; 31303-an oil outlet;

40-guide cone, 401-cone head, 402-cone rod, 403-rubber ring, 404-hole;

50-a baffle plate; 51-a scissor lift mechanism; 52-laser sensing means;

53-axis, 5301-axis mount block, 5302-axis mount; 54-guide plate, 5401-guide plate mounting block; 55-detection wheel, 5501-first wheel, 5502-second wheel; 56-coded sensors; 57-tension spring; 58-data line;

a, a carrier roller conveying mechanism; b, an active clamping pipe conveying mechanism; c pipe fitting conveying mechanism.

Detailed Description

The technical solutions in the embodiments of the present invention will be fully described in detail below with reference to the accompanying drawings. It is obvious that the described embodiments are only some specific embodiments, not all embodiments, of the general technical solution of the present invention. All other embodiments, which can be derived by a person skilled in the art from the general inventive concept, fall within the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, the tube penetrating device for a heat exchange tube bundle for a heat exchanger according to this embodiment includes a frame, an open accommodating space is provided on the frame, the frame includes but is not limited to a four-column frame 10, a pressing conveying unit 1 and a fixed conveying unit 2 (hereinafter, the pressing conveying unit 1 and the fixed conveying unit 2 are defined as a tube conveying mechanism) are installed inside the four-column frame 10 from top to bottom, the fixed conveying unit 2 is fixedly installed on the four-column frame 10, the pressing conveying unit 1 is slidably installed on the four-column frame 10, and an adjustable space for accommodating a heat exchange tube is formed between the pressing conveying unit 1 and the fixed conveying unit 2, so as to continuously clamp and convey the heat exchange tube 4, improve the tube penetrating efficiency, and accelerate the manufacturing speed of the heat exchanger.

The structure that compresses tightly conveying unit 1 and fixed conveying unit 3 is the same, all sets up to two-layer structure, and outer structure is grip-pad 7, and the inlayer structure is chain 14, and outer grip-pad 7 is used for carrying heat exchange tube 4, and the chain 14 of inlayer is used for compressing tightly, installs soft backing plate 15 on the grip-pad, and it has the slot with heat exchange tube shape matched with to open on the soft backing plate 15 for flexible centre gripping heat exchange tube 4 can avoid damaging heat exchange tube 4 simultaneously.

An upper driving roller is arranged on one side of the inner side of the pressing and conveying unit 1, and an upper driving chain wheel 8 is coaxially arranged in the upper driving roller; the other side of the inner side of the pressing conveyor 1 is provided with an upward tensioning mechanism, a row of upper clamping rollers 13 is arranged between the upper driving roller and the upward tensioning mechanism, the upper clamping rollers 13 are in contact connection with the inner side, close to the fixed conveying unit 3, of the pressing conveying unit 1 through upper clamping roller beams 12, the upper clamping roller beams 12 are in sliding connection with the four-column frame 10, the upper clamping roller beams are arranged to be of a door-shaped structure, and the upper clamping roller beams 12 can drive the pressing conveying unit 1 to move up and down along the four-column frame 10.

Specifically, each track shoe 7 has a corresponding link connected to a link of the chain 14, a soft pad 15 is correspondingly mounted on each link of the track shoe 7, and each soft pad 15 covers the width direction of the link. After the soft base plates 15 are respectively installed on the track shoes of the pressing conveying unit 1 and the fixed conveying unit 3, a corresponding clamping structure is formed.

The soft pad 15 is made of an elastic material, for example, rubber, and the elastic deformation property of the elastic material is utilized to ensure the clamping stability.

Specifically, referring to fig. 5, the specific structure of the soft cushion plate 15 includes a cushion plate 15 body, and a plurality of grooves are arranged along the width direction of the body, each groove is a radian groove with a radian smaller than 180 degrees, and a straight portion is arranged between adjacent grooves; the selection of the size can ensure that after the relative position between the pressing conveying unit 1 and the fixed conveying unit 3 is adjusted, the straight parts of the upper backing plates 15 of the two units are attached together in a fit state, so that the interference fit is realized, and the heat exchange tube 4 is clamped.

The body of the backing plate 15 is provided with bolt holes 1501 at intervals, and the backing plate 15 can be fixedly installed on the track shoe sections through bolts.

Furthermore, in some embodiments of the present invention, in order to better control the relative clamping degree between the pressing and conveying unit 1 and the fixed conveying unit 3, a pressure control or pressure detection element may be optionally arranged on the pressing and conveying unit 1 or the fixed conveying unit 3. For example, a pressure sensor may be optionally provided to detect the degree of grip between the upper and lower track shoes; in some embodiments, the hydraulic control element may be selected to set a hydraulic adjustment value of the hydraulic control unit to adjust the clamping force of the upper and lower track shoes, for example, to 0.3 Mpa.

The clamping conveying unit 1 and the fixed conveying unit 3 adopt a crawler belt structure. Compared with an upper clamping and matching mechanism and a lower clamping and matching mechanism of a conveyor belt type in the patent CN203714960U, the clamping and matching mechanism can ensure better clamping matching degree through matching of a rigid track shoe and a flexible base plate, and can still ensure enough clamping degree under the condition that the number of single insertion tubes is increased.

A lower driving roller is arranged on the same side of the inner side of the fixed conveying unit 3 as the upper driving roller, and a lower driving chain is coaxially arranged in the lower driving roller; the other side of the inner side of the fixed conveying unit is provided with a lower tensioning mechanism, and a row of lower clamping rollers are arranged between the lower driving roller and the lower tensioning mechanism. The lower clamping roller is in contact connection with one side, close to the pressing conveying unit 1, of the fixed conveying unit 3 through a lower clamping roller beam, the lower clamping roller beam is fixedly connected with the four-column frame 10, the lower clamping roller beam is also arranged to be of a door-shaped structure, and the lower clamping roller beam is inversely fixedly connected with the four-column frame.

The tensioning mechanism comprises a tensioning chain wheel 9 and a tensioning roller, the tensioning chain wheel 9 and the tensioning roller are coaxially arranged, the tensioning chain wheel is connected with a tensioning screw rod, the tensioning screw rod is connected with a tensioning mechanism, the tensioning mechanism comprises but is not limited to a cylinder, and the tensioning mechanism rotates the tensioning screw rod to enable the corresponding conveying mechanism to achieve tensioning work.

The upper driving chain wheel 8 is connected with the lower driving chain wheel through the two transmission mechanisms 2 which are respectively arranged on two side surfaces of the fixed conveying unit. The transmission mechanism comprises two driving wheels 20, two transition wheels 19, two swing arms 17 and two connecting plates 18, wherein the two driving wheels 20 are arranged up and down and respectively comprise an upper driving wheel and a lower driving wheel, the upper driving wheel and the lower driving wheel are coaxially arranged on an upper driving chain wheel and a lower driving chain wheel respectively, the two transition wheels 19 are meshed and connected, the two connecting plates are arranged on two sides of the two transition wheels, connecting pieces are arranged on the two connecting plates and correspond to the transition wheels and are used for being connected with the transition wheels, the upper driving wheel is meshed and connected with one of the transition wheels, the lower driving wheel is meshed and connected with the other transition wheel, meanwhile, the center of the upper driving wheel is connected with the center of the transition wheel connected with the upper driving wheel through the swing arms, and the center of the lower driving wheel is connected with the center of the transition wheel connected with the lower driving wheel through the other swing arm, and therefore transmission action is achieved.

Specifically, when external power is transmitted by an upper driving wheel or a lower driving wheel, the power is transmitted to the other driving wheel through the two transition wheels, so that the upper driving wheel and the lower driving wheel realize reverse synchronous rotation, the upper driving chain wheel and the lower driving chain wheel are driven to realize reverse synchronous rotation, the compression conveying unit 1 and the fixed conveying unit 2 are driven to perform reverse synchronous motion, and the heat exchange tube 4 is driven to realize linear conveying motion. The swing arm can swing around the connected driving chain wheel, and the arbitrary change of the center distance of the upper and lower driving chain wheels can be realized by matching with the horizontal movement of the transition wheel, namely, the center distance of the upper and lower driving chain wheels is automatically adjusted along with the clamping and loosening of the pressing conveying unit 1, and the upper and lower driving chain wheels are always kept to reversely rotate synchronously.

The upper driving chain wheel is connected with a driving part, the driving part comprises but not limited to a motor, the driving part drives the upper driving chain wheel to rotate, and the upper driving chain wheel rotates reversely through the upper driving roller, so that the pressing conveying unit 1 and the fixed conveying unit 3 are driven to do reverse synchronous motion.

The pressing conveying unit 1 is connected with the four-column frame 10 through sliding mechanisms, the number of the sliding mechanisms is four, the sliding mechanisms are respectively and fixedly installed on two sides of the pressing conveying unit 1, the sliding mechanisms are respectively and slidably connected with four columns of the four-column frame 10, each sliding mechanism comprises a support and guide wheels 11 at two ends of the support, the support is fixedly connected with an upper clamping roller beam 12, and the guide wheels 11 are slidably connected with the four-column frame 10.

The top of four post frames is fixed with clamping driving part 5, in this embodiment, the clamping driving part includes but is not limited to oil cylinder and air cylinder, the driving end of clamping driving part 5 connects with the support, the clamping driving part drives the support, the support drives the upper clamping roller beam 12, the upper clamping roller beam 12 drives the pressing conveying unit 1 to move up and down along the four post frames 10, so that the fixed conveying unit 3 and the pressing conveying unit 1 form an adjustable space for accommodating the heat exchange tube, and the adjustable space is used for clamping and conveying the heat exchange tube 4.

It is worth mentioning that the upper side walls of the four columns of the four-column frame are provided with convex rectangular guide rails 6, the guide wheels 11 are provided with concave grooves matched with the guide rails 6 in structure, and the guide wheels and the guide rails move relatively along the guide rails, so that the moving resistance between the guide wheels and the guide rails is reduced, and the energy consumption is reduced.

In practical application, the front end of the device is provided with a guide mechanism for guiding the heat exchange tube to enter between the fixed conveying unit and the pressing conveying unit along a designed direction path. The rear end of this device is equipped with automatic upset baffle push tube mechanism, and when this device moved backward and made the heat exchange tube break away from this device, the automatic upset baffle of automatic upset baffle push tube mechanism was in the push tube position, can promote the heat exchange tube antedisplacement and leave the front end space of the frame of poling device, and the poling device of being convenient for gets into next plate hole position, begins the operation of penetrating of new tube bank.

The following describes the structures of the guide device and the pipe pushing mechanism with reference to specific embodiments.

In an embodiment of the present invention, the structure of the guide mechanism may be implemented as follows.

The guide mechanism comprises a first guide structure, is arranged at the front end of the fixed conveying unit and the clamping conveying unit along the conveying direction of the heat exchange tube, and structurally refers to fig. 6 and 7, and specifically comprises:

guide structure housing 21: can be fixedly mounted to the front ends of the fixed conveying unit and the clamping conveying unit; the housing 21 includes a first side wall 2101 and a second side wall 2102 which are arranged oppositely, a first shaft mounting structure and a second shaft mounting structure are arranged on the first side wall 2101 at intervals along the height direction of the first side wall 2101 (taking the direction after the guide mechanism is mounted as the reference), a first shaft mounting structure and a second shaft mounting structure are arranged on the second side wall 2102 at intervals correspondingly, the first shaft mounting structures on the two sides are equal in height, and the second shaft mounting structures are equal in height; the shaft mounting structure can be a slotted hole or a shaft groove; as shown in fig. 8, in this embodiment, a shaft groove is used, and in order to fix the shaft, a fixing member 2103 is disposed at the shaft groove to close an opening of the shaft groove and prevent the shaft from falling off;

the roller mechanism: the roller assembly comprises a first roller assembly and a second roller assembly, wherein the roller assemblies comprise wheel shafts and roller wheels arranged on the wheel shafts. Each roller comprises a plurality of wheel grooves arranged along the side circumferential surface of the roller. The first roller assembly and the second roller assembly have the same structure, and specifically comprise the following steps:

the first roller assembly: the wheel assembly comprises a first wheel shaft 2201 and a first wheel roller 2202 arranged on the wheel shaft, wherein a plurality of wheel grooves are arranged on the first wheel roller 2202 at intervals, two ends of the first wheel shaft 2201 are respectively arranged in first shaft mounting structures (first shaft grooves 21011) of a first side wall and a second side wall, the first shaft grooves 21011 do not influence the movement of the wheel shaft 2201, and the wheel shaft 2201 can rotate relative to the shaft mounting structures;

the second roller assembly: the device comprises a second wheel shaft 2301 and a second wheel roller 2302 arranged on the wheel shaft, wherein a plurality of wheel grooves are formed in the second wheel roller 2302 at intervals, two ends of the second wheel shaft 2301 are respectively installed in a second shaft installation structure (a second shaft groove 21012) of a first side wall 2101 and a second side wall 2102, the second shaft groove 21012 does not influence the movement of the wheel shaft 2301, and the wheel shaft 2301 can rotate relative to the shaft installation structure;

each roller comprises a plurality of wheel grooves arranged along the side circumferential surface of the roller. The first wheel roller groove is matched with the second wheel roller groove to form a wheel groove gap 2104 as a pipe clamping space; the space has the same or slightly larger diameter than the heat exchange tube, so that the heat exchange tube can be allowed to pass through without excessive position deviation.

Two sides of the housing 21 facing the transfer direction of the heat exchange tube are open structures, that is, two sides of the guide structure housing 21 opposite to the clamping space are respectively configured with a tube inlet 2105 and a tube outlet 2106, so that the heat exchange tube can be introduced into and pass out through the gap between the roller assemblies. The tube inlet 2105 and tube outlet 2106 may be configured by making openings in the housing sidewall, or by omitting the one housing sidewall directly.

In some embodiments of the present invention, further comprising a transition guiding structure for further assisting in guiding the pipe, with reference to fig. 8, the transition guiding structure comprises:

a base body 24 attached to the inlet 2105 end of the housing tube, the base body 24 having a through hole 2401 formed therein along a direction from the first end to the second end; when the base 24 and the housing 21 are assembled, the through hole 2104 is positioned to face the wheel groove gap 2104 so that the pipe can pass between the wheel groove gap 2104 and the through hole 2401. The size and the clearance of the through hole 2401 are configured in such a way that after the through hole is matched with the first guide structure and the second guide structure, the through hole 2401 is in clearance fit with the roller in the guide structure so as to ensure that the heat exchange tube can smoothly pass through

In some embodiments, a transition guide structure may also be mounted at the tube exit end.

Referring to fig. 9 and 10, in some embodiments of the present invention, two sets of guiding structures may be further provided to improve the guiding effect. The specific structure of the second guide structure is the same as that of the first guide structure, and the second guide structure is positioned at the front end of the first guide structure along the transfer direction of the heat exchange tube. The positions and the gaps of the rollers in the two groups of guide structures are correspondingly matched. The shells of the two groups of guide structures are interconnected.

In some embodiments, the first guiding structure 25 and the second guiding structure 26 may be directly connected via a transition guiding structure. For example, the first guiding structure 25 is located near one end of the conveying structure, and a pipe inlet end thereof is a first transition structure, the first transition guiding structure 72 is further connected to a housing (pipe outlet end) of the second guiding structure 26, and a second transition structure may be further provided at an inlet end of the second guiding structure 26.

Furthermore, in order to improve the guiding effect, a second transition guiding structure is further installed at the front end of the second guiding structure 26, and a second transition guiding structure 82 is fixedly installed at the front end of the second guiding structure shell, and the through hole of the second transition guiding structure is matched with the roller gap of the second guiding structure.

Above structure, can solve the direction problem that the heat exchange tube got into transport structure end. The guide structure is matched with the conveying mechanism, and the corresponding wheel groove gap is aligned with a groove formed by the cushion block on the track shoe, so that the heat exchange tube can be smoothly transited and conveyed between the guide structure and the conveying mechanism.

Referring to fig. 11 and 12, in some embodiments of the invention, a push plate 29 is disposed on the side wall of the housing on the side of the guiding structure where the outlet of the pipe is located, the push plate 29 is coupled to the housing on the outlet side of the pipe, and the coupling is located above the outlet 2106 of the pipe, the push plate 29 is sized to: when rotated downward, covers the tube outlet 2106 and engages the housing side walls. The guiding structure of the structure is suitable for being installed at the outlet end of the conveying structure, when the pipe fitting is completely output from the guiding structure, the pushing plate 29 falls down, the guiding structure moves forwards, and the pushing plate 29 can push the pipe fitting forwards.

In some embodiments of the invention, a guide mechanism, defined herein as a pusher structure, may be provided at the discharge end of the conveying structure, and a guide mechanism having a pusher plate 29 may be provided at the exit end of the conveying structure.

The main body implementation structure of the pushing structure is the same as the guiding structure, and comprises:

propelling movement structure casing: can be fixedly mounted to the rear ends of the fixed conveying unit and the clamping conveying unit; the pushing structure shell comprises a first side wall and a second side wall which are arranged oppositely, a first shaft mounting structure and a second shaft mounting structure are arranged on the first side wall at intervals along the height direction of the first side wall, and a first shaft mounting structure and a second shaft mounting structure are arranged on the second side wall at corresponding intervals; the shaft mounting structure can be a slotted hole or a shaft groove; in the embodiment, a shaft groove is adopted, and a fixing piece is arranged at the shaft groove to seal an opening of the shaft groove and prevent the shaft from falling off for fixing the matched shaft;

the roller mechanism: the roller assembly comprises a wheel shaft and a roller arranged on the wheel shaft. Each of the rollers includes a wheel groove provided along a side circumferential surface thereof. The first roller assembly and the second roller assembly are identical in structure, two ends of a wheel shaft of the first roller assembly are correspondingly installed to the first shaft installation structure, and two ends of a wheel shaft of the second roller assembly are correspondingly installed to the second shaft installation structure. The dimensions of the wheel rollers on the two axles, the spacing of the first axle mounting structure and the second axle mounting structure are configured to: the groove gap between the upper roller of the first roller assembly and the upper roller of the second roller assembly is the same as or slightly larger than the pipe diameter of the heat exchange pipe, so that the heat exchange pipe can be allowed to pass through, and excessive position deviation cannot be generated.

Two sides of the pushing structure shell facing the transmission direction of the heat exchange tube are of an open structure, so that the heat exchange tube can be conveyed into a gap between the roller assemblies and penetrate out through the gap between the roller assemblies.

In some embodiments of the invention, a pushing plate is arranged in the direction in which the heat exchange tube penetrates through the pushing mechanism, the pushing plate is coupled with the shell of the pushing mechanism and is positioned above the roller assembly, and the size and the installation position of the pushing plate are configured so that the pushing plate can cover the outlet of the pipe fitting of the roller assembly after being turned down relative to the shell.

In a preferred embodiment, the roller of the first guide structure, the second guide structure and the pushing structure is a metal roller, so as to ensure better constraint on the heat exchange pipe.

Referring to fig. 13 and 14, in the above embodiment, the pipe inlet end and the pipe outlet end of the pipe conveying mechanism 210 may be provided with the same structure or different structure of the guide mechanism.

In order to have a better guiding effect, the guiding mechanisms at the inlet end and the outlet end are configured by the following combination.

Referring to fig. 13, the guiding structures disposed at the inlet end 210 include two sets, a first set of guiding structures 25 and a second set of guiding structures 26, the housing of the first set of guiding structures 25 and the housing of the second set of guiding structures 26 are interconnected, and the first set of guiding structures 25 and the second set of guiding structures 26 may be connected via a transitional guiding structure.

Referring to fig. 14, the guiding mechanism disposed at the outlet end of the tube conveying mechanism 210 is configured with a pushing plate 29, which is defined as a pushing mechanism 212. The pipe fitting is inserted into the heat exchanger after passing through the outlet end of the conveying mechanism 210, and the pushing plate 29 can further assist in conveying the heat exchange pipe 4 to the inside of the heat exchanger.

The above combination is not limited to the fitting structure between the guide structure and the pipe conveying mechanism 210, and may be flexibly arranged as necessary. For example, a set of guiding structures may be provided at the inlet end of the tube conveying structure 210, or the guiding structure at the outlet end of the tube may be omitted.

In some embodiments of the present invention, the tube penetrating device further comprises a guide cone 40, which is used with the tube penetrating device, and the structure of which is shown in fig. 29.

The structure of guide cone includes: conical head 401 and with conical head integrative awl pole 402, the top of conical head 401 is sharp form, can conveniently insert the diaphragm orifice, and conical rod 402 is cylindrical, and its size matches with the internal diameter of heat exchange tube.

In order to ensure the matching of the guide cone 40 and the heat exchange tube, a rubber ring 403 is arranged on the cone rod 402. In the pipe penetrating process, the rubber ring 403 is in interference fit with the heat exchange pipe to ensure a clamping relationship, the heat exchange pipe is inserted in an auxiliary manner and then fixed, a hole 404 is formed in the conical structure, and after the pipe penetrating action of the heat exchange pipe is completed, the guide cone can be pulled out of the heat exchange pipe through a hook or a hook piece penetrating into the hole.

The rubber ring 403 is sleeved on the cylindrical outer ring matched with the inner diameter of the heat exchange tube, and the guide cone 40 is arranged, so that the heat exchange tube can conveniently enter the conveying mechanism through the tube bundle guide mechanism at the rear end of the conveying mechanism; on the other hand, because the front portion of heat exchange tube appears because the phenomenon of gravity flagging when the heat exchange tube in-process, the prong portion of the toper structure of direction awl still can be in baffling board aperture within range to guarantee that the heat exchange tube lasts accurate the baffling board of wearing right behind penetrating, guaranteed to a certain extent the continuity and the sustainable of wearing the pipe, avoided the waste to this in-process manual regulation, reduced human cost's loss to a certain extent, improve economic benefits.

In some embodiments of the invention, in order to better solve the problem of conveying the heat exchange tube, a carrier roller conveying mechanism and an active clamping tube conveying mechanism are further arranged at the front end of the conveying mechanism. The support roller conveying mechanism serves as the foremost end structure of the whole heat exchange tube penetrating mechanism and is used for initial conveying of a heat exchange tube, the active clamping tube conveying mechanism is matched with the support roller conveying mechanism and arranged at the front end of the conveying mechanism and used for conveying the heat exchange tube from the stock to the tube penetrating conveying mechanism. In some embodiments, the active clamping tube may also be omitted, directly opposing the idler transport mechanism to the transport structure.

The specific implementation structure is as follows.

The carrier roller conveying mechanism, the structure of which refers to fig. 15, comprises a base 31, a bracket structure, a carrier roller frame 32 and a carrier roller 33.

And a base 31 serving as a supporting base of the whole mechanism.

The support structure is as follows: is arranged on the base 31 and is used as a support of the roller frame 32.

Carrier roller frame 32: at least two groups of sliding fit structures are arranged between the carrier roller frame 32 and the support structure along the length direction of the carrier roller frame 32, and the carrier roller frame 32 can move relative to the support along the sliding fit structures; the supporting structure is used as a supporting base of the roller frame 32, a structure capable of moving relatively is arranged between the supporting structure and the roller frame, and further, the two groups of sliding structures can guarantee a more stable movement matching structure between the supporting structure and the roller frame.

Supporting roller 33: the number of the supporting roller frames is a plurality, and the supporting roller frames are arranged on the supporting roller frames 32 at intervals in parallel along the length direction of the supporting roller frames 32; the carrier roller 33 serves as a supporting base for a product to be conveyed; specifically, the length direction of each carrier roller 33 is arranged along the width direction of the base 1, and a plurality of carrier rollers 33 are arranged on the base in parallel along the length direction of the base 31, so that products to be conveyed can be placed on the carrier rollers 33 which are arranged continuously. As the idler frame 32 moves along the cradle structure, the idler 3 moves therewith. The number of the supporting rollers 33 is selected according to the length of the product to be conveyed, so that the product to be conveyed can be stably supported. The width of the idlers 33 is selected with reference to the number of products delivered at a single time, and since the products to be delivered are arranged side by side on the idlers 33, the wider the idlers 33, the greater the number of products that can be delivered at a single time.

In order to solve the problem of the installation of the carrier rollers 33, a plurality of groups of carrier roller supports 34 are arranged on the carrier roller frame 32 at intervals, and each carrier roller 33 corresponds to one group of carrier roller supports and is rotationally connected with the carrier roller supports 34. Specifically, a set of carrier roller support 34 includes two sub-supports that are symmetrically arranged, the port of the sub-support is provided with a notch, and the shaft parts at the two ends of each carrier roller 33 are located in the notches and fixed by closing the notches through fixing parts. This structure can ensure the rotation performance of each idler 33, and is convenient to maintain.

A motion driving mechanism: is connected with the roller frame 32 and is used as a power mechanism to drive the roller frame 32 to move along the bracket. In this embodiment, the motion driving mechanism includes a motor 35, a lead screw 36 connected to the motor 35, and a slider 37 disposed on the lead screw 36; the slider 37 is connected to the carrier roller frame 32. Alternatively to this, a cylinder or the like may be selected as the drive mechanism. In order to realize a more stable and symmetrical driving effect and avoid uneven movement of the roller frame 32, the driving mechanism is arranged at the symmetrical center of the roller frame 32 in the length direction.

The idler conveying mechanism may be used in conjunction with other power-type conveying structures, and in some embodiments, one or more idlers may be provided as drive rollers, with drive motors being provided for the drive rollers. In this embodiment, the carrier roller 33 at the forefront in the conveying direction is selected to be set as a drive roller, which is driven to: rotating forward relative to the conveying direction. When the conveying work is executed, the products to be conveyed are arranged on the carrier rollers 33 in parallel, and the driving rollers or other power type conveying mechanisms are matched to convey the products forwards.

In some embodiments of the present invention, the mating arrangement between the bracket structure and the idler housing 32 is addressed by the following test arrangement. Referring to fig. 16, the idler cradle includes:

first support 3801: the end part of one side of the roller bracket, facing the roller bracket, is provided with a first I-shaped beam 3803;

second holder 3802: the first support 3801 is arranged in parallel at intervals, and the end part of the first support facing one side of the roller frame 2 is provided with a second I-shaped beam;

a first sliding block 3201 and a second sliding block are arranged at intervals along the bottom of the carrier roller frame, the first sliding block 3201 is arranged in a first I-shaped beam groove, and the second sliding block is positioned in a second I-shaped beam groove;

the matching structure of the first slider 3201 and the first i-beam 3803, and the second slider and the second i-beam is the two sets of sliding fit structures described above, and the sliders can move along the i-beam grooves.

In order to realize a more stable support structure, in some embodiments of the present invention, the first cradle 3801 and the second cradle 3802 are provided at both ends of the length center symmetry of the idler 32, with reference to the axis symmetry center of the length direction of the idler 32.

Furthermore, more sets of brackets can be arranged on the base, each set of bracket has the same structure as the first bracket 801 and the second bracket 802, and correspondingly, more sliding blocks are arranged at the bottom of the roller frame and are matched with the corresponding brackets. This may solve the stability problem with increasing length of the idler frame 32.

The support structure, the matching structure of the roller frame 33, is a suspended structure relative to the base 31, and in order to solve the problem of protecting the components, in some embodiments of the present invention, a guard plate structure is further designed, and with reference to fig. 17, the guard plate structure includes:

guard plate support 3901: is fixedly arranged on the base 31;

guard plate 3902: the number of the blocks is a plurality of blocks, and the blocks are arranged on the guard plate bracket 3901 and located between any two adjacent carrier rollers;

the idler 33 is longitudinally high above the end face of the apron 3901. The dimensions of the guard plate 3902 are configured to: along the width direction of the base 31, it can cover the width direction of the base 31, along the length direction of the base 31, every backplate 3902 can cover the clearance between two arbitrary bearing rollers 33, can not interfere with the motion of bearing roller 33 again.

Base 31, supporting structure, bearing roller frame 32, actuating mechanism all are located under backplate 3902, form a relative confined structure, on the one hand, can play the guard action to base 31, supporting structure, bearing roller frame 32, actuating mechanism, and on the other hand can support the product when leading to treating to carry the product to slide from bearing roller 33 because of abnormal conditions, avoids the product damage.

In some embodiments of the invention, shield mount 3901 comprises:

legs 39011: the number of the supporting legs is a plurality, the supporting legs are fixedly arranged on the bottom plate 3901 and are symmetrically arranged on two sides of the roller frame 33 in the length direction to form a supporting leg array;

longitudinal beam 39012: connecting side legs 39011;

the longitudinal height of the longitudinal beam 390123 is above the idler frame 32 and below the idler mounts 34. This configuration ensures protection of the apron frame 3902 and avoids interference with the movement of the idler 33.

In some embodiments of the present invention, in order to meet different conveying height requirements, the bottom of the base 31 may be provided with a scissor lifting mechanism 51, and the scissor lifting mechanism 51 is lifted to drive the base 31 to lift integrally, so as to drive the support structure, the roller frame 32, and the carrier roller 33 to lift. Referring to fig. 30 and 31, a base structure diagram of the scissors lifting mechanism 51 is shown, and the structure of the carrier roller 33 and the like mounted on the upper portion of the base 31 is omitted.

Furthermore, the conveying height of the carrier roller conveying platform needs to be consistent with the height of the heat exchange tube conveying mechanism, so that the carrier roller conveying platform can convey the heat exchange tubes to enter the heat exchange tube conveying mechanism smoothly. To solve this problem, the heat exchange pipe conveying mechanism is further provided with a laser sensing mechanism 52. The laser sensing mechanism 52 may be mounted on a frame of the heat exchange pipe conveying mechanism. The light emitting direction of the laser sensor device 52 faces the side end face of the base 31 on the side of the tube insertion conveyor C. The laser sensing device 52 emits laser and can receive laser refraction signals, and when the laser sensing device 52 can receive the laser refraction signals of the base 31, the marking carrier roller conveying platform and the heat exchange tube conveying mechanism C are at the same horizontal height.

The roller type conveying mechanism can be used in cooperation with the active clamping pipe conveying mechanism and is used as a front end mechanism and arranged at the front end of the active clamping pipe conveying mechanism.

Fig. 18 is a schematic structural diagram of the active pipe clamping and conveying mechanism, the active pipe clamping and conveying mechanism and the conveying mechanism are located on the same moving platform, and after the active pipe clamping and conveying mechanism and the conveying mechanism are located at initial positions, synchronous motion is always kept in a pipe penetrating process, so that the heat exchange pipe is guaranteed to be conveyed smoothly between the active pipe clamping and conveying mechanism and the conveying mechanism.

As shown in fig. 18, the pipe pressing device comprises a frame 310, a cross beam 311, a pipe pressing mechanism 312, a pipe pressing driving mechanism 313, an auxiliary pipe pressing mechanism 31412, at least one set of rollers and a roller driving member 31502, wherein an accommodating space is arranged on the frame 310; the cross beam 311 is disposed on top of the frame 310; the pipe pressing mechanism 312 is arranged in the accommodating space; one end of the pipe pressing driving mechanism 313 is connected with the cross beam 311, the other end of the pipe pressing driving mechanism 313 is fixedly connected with the pipe pressing mechanism 312, and the pipe pressing driving mechanism 313 drives the pipe pressing mechanism 312 to move along the frame 310 relative to the cross beam 311; the auxiliary pressure pipe mechanism 31412 is fixedly arranged below the frame 310 relative to the pressure pipe mechanism 312; each group of rollers comprises an auxiliary roller arranged on the auxiliary pressure pipe mechanism 31412 and a driving roller arranged on the pressure pipe driving mechanism, and a pressure pipe adjustable space is formed between the auxiliary roller and the driving roller; and a roller driving member 31502 connected to the driving roller, and the roller driving member 31502 drives the driving roller to rotate.

In order to better meet the space position and installation requirements of the whole pipe penetrating production line, the frame 310 is provided with a frame base and two door-shaped frames which are arranged on one side of the frame base side by side, and a distance which is not provided with a part is reserved on the frame base and is used for matching with the front and back movement of the pipe penetrating device at the back end.

For better realization direction effect, still be provided with tube bank guiding mechanism, tube bank guiding mechanism includes first tube bank guiding structure, sets up the front end at frame 310 along tube bank direction of delivery, specifically includes:

a guide structure shell: may be fixedly mounted to the front end of the frame 310; the shell 31601 comprises a first side wall 31602 and a second side wall 31603 which are oppositely arranged, a first shaft mounting structure 31604 and a second shaft mounting structure 31605 are arranged on the first side wall 31602 at intervals along the height direction of the first side wall 31602 (taking the direction of the tube bundle guiding mechanism after installation as a reference), and a third shaft mounting structure 31606 and a fourth shaft mounting structure 31607 are arranged on the second side wall 31603 at intervals correspondingly; the shaft mounting structure can be a slotted hole or a shaft groove; as shown in fig. 20, in the present embodiment, a shaft groove is adopted, and in order to match with the fixation of the shaft, a fixing member is arranged at the shaft groove to close the opening of the shaft groove and prevent the shaft from falling off;

the roller mechanism: comprises a first roller assembly 31608 and a second roller assembly 31609, wherein the roller assemblies comprise a wheel axle and a roller arranged on the wheel axle. Each of the rollers includes a wheel groove provided along a side circumferential surface thereof. First roller assembly 31608 and second roller assembly 31609 are identical in structure, with the axle of first roller assembly 31608 having opposite ends mounted between first axle mounting structure 31604 and third axle mounting structure 31606, and the axle of second roller assembly 31609 having opposite ends mounted between second axle mounting structure 31605 and fourth axle mounting structure. The size of the two on-axle wheel rollers, the spacing of the first axle mounting structure 31604 and the second axle mounting structure 31605 are configured to: the groove gap between the rollers of the first roller assembly 31608 and the rollers of the second roller assembly 31609 is the same as or slightly larger than the tube diameter of the tube bundle, so that the tube bundle can pass through the groove gap without excessive position deviation.

Two sides of the shell 31601 facing to the transmission direction of the tube bundle are in an open structure, so that the tube bundle can be transmitted into the gap between the roller assemblies and pass out through the gap between the roller assemblies.

In some embodiments of the present invention, a second tube bundle guiding structure may be further provided to enhance the guiding effect. The second guide structure has the same structure as the first guide structure, and is located at the rear end of the frame 310 along the tube bundle transfer direction. The positions and the gaps of the rollers in the two groups of guide structures are correspondingly matched.

For better guidance, the first roller assembly 31608 and the second roller assembly 31609 of the bundle guide mechanism form an inner bundle passing space, and the lower surface of the bundle passing space is flush with the upper surface of the auxiliary roller.

In some embodiments of the present invention, in order to achieve a higher pressing effect, fig. 21 and 22 are schematic structural diagrams of the pipe pressing mechanism 312, i.e., fig. 21 to 22 show that the pipe pressing mechanism 312 includes a connection plate 31201 fixedly connected to the pipe driving mechanism 313, a mounting plate 31202 for mounting the roller driving member 31502 and the driving roller, and an adjusting member 31204 is disposed between the mounting plate 31202 and the connection plate 31201, and the distance between the connection plate 31201 and the mounting plate 31202 is changed by the adjusting member 31204.

In some embodiments of the present invention, the adjusting component 31204 is further configured to have a column structure 312041 and a pillar 312042 from top to bottom, the upper end of the column structure 312041 is fixedly connected to the connecting plate 31201, the lower end of the column structure 312041 is movably inserted into the pillar 312042, the lower end of the pillar 312042 is connected to the mounting plate 31202, the column structure 312041 is sleeved with a spring 312043, one end of the spring 312043 is connected to the connecting plate 31201, the other end of the spring 312043 is connected to the pillar 312042, the lower end of the column structure 312041 is further provided with a pin through hole 312044, a pillar through hole 312045 larger than the pin through hole 312044 is provided at a corresponding position of the pillar 312042, and the pillar through hole 312045 and the pin through hole 312044 penetrate a pin.

It should be noted that four adjusting members 31204 are provided, and are respectively disposed around the mounting plate 31202 and the connecting plate 31201, and in order to improve the structural stability, two adjusting mechanisms perpendicular to the movement direction of the tube bundle may be connected through the rectangular connecting plate 31201.

In some embodiments of the present invention, to facilitate stable and unbiased movement of tube pressing mechanism 312 along frame 310, a concave slider is mounted on the sidewall of pillar 312042, and a track is provided on the gantry of frame 310, via which concave slider adjustment member 31204 moves up and down along the track of frame 310.

It should be noted that fig. 23 is a cross-sectional view of the adjustment component 31204, as shown in fig. 23, the pillar 312042 is configured as a hollow pillar, the pillar is provided with two pillar through holes 312045, as shown in fig. 23, a pin through hole 312044 is opened at a position corresponding to the upper end of the pillar through hole 312045 of the pillar structure 312041, in the assembling process, after the spring 312043 is sleeved on the pillar structure 312041, the upper end of the pillar structure 312041 is connected with the connecting plate 31201 by a bolt, then the lower end of the pillar structure 312041 is installed in the hollow structure of the pillar 312042, and a pin is inserted into the pillar through hole 312045 and the pin through hole 312044, so as to increase the pressing force by the spring 12043, and on the other hand, the pin, the pillar through hole 312045 and the pin through hole 312044 are configured to play a role of limiting.

In some embodiments of the present invention, in order to improve the structural stability of the pressing driving mechanism, fig. 10 and 11 are schematic structural diagrams of a first connecting plate 31201 and a second connecting plate 31201, as shown in fig. 24 and 25, a concave structure 312011 is disposed on the connecting plate 31201, and a concave structure 312011 is fixedly mounted with the pressing pipe driving mechanism 313.

Four through holes are formed in the concave structure 312011 and are used for being connected with the pressing driving mechanism, so that the pressing pipe mechanism 312 and the driving roller can be driven to move up and down conveniently.

Fig. 27 is a schematic structural diagram of the pressing driving mechanism, the pressing driving mechanism may be configured as an air cylinder or an oil cylinder, taking the oil cylinder as an example, a telescopic end of the oil cylinder is fixedly mounted on the cross beam 311, a fixed end of the oil cylinder is mounted on the concave structure 312011, the oil cylinder drives the connecting plate 31201 and the connecting mechanism thereof to move up and down along the frame 310, a through hole 31301 is formed at a position of the oil cylinder opposite to the through hole of the concave structure 312011, and an oil inlet 31302 and an oil outlet 31303 are further formed on a side wall of the oil cylinder.

The oil inlet 31302 and the oil outlet 31303 are arranged above and below and have a certain distance, and the purpose of the arrangement is to indicate that other parts are not suitable to be arranged between the oil inlet 31302 and the oil outlet 31303, so that the assembly is prevented from being influenced.

In some embodiments of the present invention, at least one mounting structure is correspondingly disposed on the third side wall and the fourth side wall of the auxiliary pressure pipe mechanism 31412, and the auxiliary roller is mounted on the mounting structure.

The auxiliary pressure pipe mechanism 31412 is fixedly installed on the door-shaped frame of the frame 310, the auxiliary pressure pipe mechanism 31412 can be integrally set to be a concave structure, two installation structures are arranged on the third side wall and the fourth side wall which are opposite and arranged in the same running direction with the tube bundle, the installation structures can be slotted holes or shaft grooves, and two ends of the auxiliary roller are installed in the installation structures. The position of the mounting structure corresponds to the position of the driving roller wheel, and the distance between the driving roller wheel and the auxiliary roller wheel is equal to the diameter of the tube bundle or slightly larger than the diameter of the tube bundle, so that the tube bundle is allowed to pass through, and excessive position deviation can not be generated.

In some embodiments of the present invention, two sets of rollers are provided, the roller driving member 31502 is connected to a driving gear 31503, the driving gear 31503 is engaged with two driven gears 31504, the two driven gears 31504 are respectively connected to two driving rollers, and the roller driving member 31502 drives the driving rollers to rotate via the driving gear 31503 and the driven gears 31504.

It should be noted that the number of rollers can be adjusted according to actual application scenarios and requirements, and is not limited.

The upper portion of connecting plate 31201 has installed roller driving piece 31502, the mount pad is installed to the lower part of connecting plate 31201, seted up the axle connection structure on the mount pad, drive roller installs on the axle connection structure, driving gear 31503 is connected to the drive end of roller driving piece 31502, the both sides of driving gear 31503 are engaged with driven gear 31504 respectively, driven gear 31504 overlaps and is established on the drive roller, roller driving piece 31502 drives two drive rollers to rotate towards a direction via driving gear 31503, two driven gear 31504.

In the working process of the active clamping pipe conveying mechanism, the driving roller is always in a rotating state, and the pipe pressing driving mechanism 313 drives the pipe pressing mechanism 312 to move downwards so as to realize the compression of the pipe bundle; in this process, when the stroke of the ram is greater than the maximum stroke acceptable for the tube bundle, the ram continues to extend, the tube pressing mechanism 312 is forced upward, the post through hole 312045 moves upward relative to the pin through hole 312044, the mounting plate 31202 and the post 312042 move upward, thereby compressing the spring 312043 on the post 312041, and at the same time, the spring 312043 applies a reaction force to the drive roller to achieve better compression of the tube bundle.

Referring to fig. 28, when the carrier roller conveying mechanism a is used in cooperation with the active clamping pipe conveying mechanism B and the pipe conveying mechanism C, the carrier roller conveying mechanism a is disposed at the front end of the active clamping pipe conveying mechanism B, and the active clamping pipe conveying mechanism B is disposed at the front end of the pipe conveying mechanism C. The position of the carrier roller frame 32 is adjusted to align the tube gap formed by the first roller assembly 31608 and the second roller assembly 31609 when the tube is fed forward. The pipe fittings are conveyed to the direction of the heat exchange plate through the three parts in sequence.

In order to solve the problem that the synchronism of the conveying of the multiple heat exchange tubes is not easy to control, in some embodiments of the invention, the tube penetrating device further comprises a synchronous conveying detection control mechanism. Refer to fig. 34 to 41.

Synchronous conveying detects control mechanism and sets up the exit end at conveying mechanism, includes:

shaft 53: the device is arranged on the conveying mechanism, for example, the device can be selectively arranged on a proper position of the frame, and can also be selectively arranged on the guide mechanism for the product provided with the guide mechanism;

the guide plate 54: the number of the heat exchange tubes is a plurality of heat exchange tubes, the number of the heat exchange tubes is matched with the number of the heat exchange tubes capable of simultaneously conveying, and the heat exchange tubes are rotatably connected with the shaft 53; taking the example that the conveying mechanism can convey 5 heat exchange tubes 4 at the same time, 5 guide plates 54 need to be configured;

detection wheel 55: each detection wheel 6 can be contacted with the top of each heat exchange tube of the conveying mechanism; taking the example of conveying 5 heat exchange tubes simultaneously, the device comprises 5 detection wheels 55, each detection wheel is matched with one heat exchange tube 4, and the detection wheels 55 are driven to rotate in the process of conveying the heat exchange tubes 4 forwards;

the encoder sensor 56: a radial extension end mounted on each guide plate 54 and located on the circumferential surface of each detection wheel 55, for detecting the rotation data of the circumferential surface of the detection wheel 55; the encoder sensor 56 is disposed so as to sense the rotation of the detection wheel 55;

the control system is connected to each encoder sensor 56 to acquire rotational data for each detection wheel 55.

If the transmission of each heat exchange tube 4 is synchronous, the rotation of each detection wheel 55 is synchronous, the number of revolutions of each detection wheel 55 detected by the code sensor 56 is the same, in this case, the controller judges that the heat exchange tube 4 is normally conveyed, and normally controls the conveying mechanism to work; when the transmission of the heat exchange tube 4 is asynchronous, the rotation data of the detection wheel 55 corresponding to the heat exchange tube 4 with delayed conveying lags behind other detection wheels, and at the moment, the controller judges that the conveying has a fault and controls the conveying mechanism to stop for adjustment.

In some embodiments of the present invention, the structure of the detection wheel comprises:

first wheel 5501: is a gear;

second wheel 5502: the roller is a normal roller with smooth circumferential surface, and is coaxially connected with the first roller body 5501, the first roller body and the second roller body 5501 rotate synchronously, and the second roller body 5502 is in contact with the top of a product conveyed by the conveying mechanism; the second wheel body 5502 is a smooth wheel body, so that the heat exchange tubes 4 can be driven to rotate more conveniently;

the encoder sensor 56 is located at a radially extending end of the circumferential surface of the first wheel 5501, that is, the encoder sensor 56 detects rotational data of the gear. Since the gear has teeth, the encoder sensor 56 can detect the number of teeth passing therethrough, which in turn can be converted into rotation data of the detection wheel 55.

In some embodiments of the present invention, the first wheel body 5501 is a metal wheel and the second wheel body 5502 is a rubber wheel. The stability of metal wheel is better, and the rubber wheel is more easily by heat exchange tube 4 drive rotation, avoids appearing the drive and skids.

In order to solve the problem of installation of the guide plate 54, in some embodiments of the present invention, a plurality of shaft installation blocks 5301 are spaced apart from each other on the shaft 53, the number of shaft installation blocks 5301 is the same as that of the guide plate 54, and each guide plate 54 is coupled to one shaft installation block 5301. Compared with direct mounting on the shaft 53, the shaft mounting block 5301 is more convenient to maintain, easy to replace after being damaged, and also convenient to adjust the position of the shaft mounting block 5301.

In some embodiments of the present invention, a tension spring 57 is further included, and one end of the tension spring 57 is connected to the shaft mounting block 5301, and the other end is connected to the guide plate 54 correspondingly disposed on the shaft mounting block. The tension spring 57 has a certain tension force, and on one hand, the tension spring can generate a certain tension force on the detection wheel 55 to ensure that the detection wheel 55 can be in contact with the heat exchange tube 4; on the other hand, when the detection wheel 55 abnormally rotates due to abnormal resistance, the tension spring 57 may pull the guide plate 54 inward to restore the position of the detection wheel 55.

In order to solve the problem of mounting the encoder sensor 56, in some embodiments of the present invention, the guide plate 54 is provided with a guide plate mounting block 5401, and the encoder sensor 56 is mounted on the guide plate mounting block 5401. As shown, the guide mounting block 5401 has a slot-in slot configuration, with the encoder sensor 56 inserted therein with its sensing end facing the sensing wheel 55, and is connected to the controller via data line 58.

In some embodiments of the invention, the conveying mechanism comprises a guide structure, and the synchronous conveying detection control mechanism is mounted on the guide structure, and the guide structure is as described above.

The shaft 53 is mounted on the upper end surface of the guide housing 21 via a shaft holder 5302, and the detection wheel 55 faces the exit direction of the wheel groove gap. This can be accomplished by adjusting the position of the shaft mounting block 5301.

In some embodiments of the invention, the guide structure disposed at the outlet end of the conveying structure further comprises a transitional guide structure, the transitional guide structure being implemented as described above.

The upper end surface of the base body 24 comprises a section of vacant part 2402, as shown in fig. 34 to 36, the vacant part 2402 is rectangular, the size of the vacant part is required to ensure that all heat exchange tubes 4 conveyed are exposed after the vacant part is arranged, and the detection wheel 55 is positioned in the vacant part 2402, so that the detection wheel 55 can be in contact with the heat exchange tubes 4 to be conveyed.

Referring to fig. 41, in some embodiments of the present invention, the outlet end of the through hole 2401 of the base is provided with a pushing plate 29, the pushing plate 29 is coupled to the base 24, the coupling position of the pushing plate 29 and the base is located above the through hole 491, and the pushing plate 29 is configured to have a size: when rotated downward, it covers the through-hole 401 and adheres to the substrate side wall. The structure is suitable for the insertion operation of the auxiliary heat exchange tube 24. In the process of conveying the heat exchange tube 4, the pushing plate 29 is lifted, after the heat exchange tube 24 is completely output, the pushing plate 29 automatically falls down, and at the moment, the pushing plate 29 can further push the heat exchange tube 24 by controlling the guide mechanism to move towards the insertion tube direction of the heat exchange tube 24, so that the heat exchange tube 2 is ensured to be completely inserted into the heat exchange baffle plate 19.

The process of the heat exchanger assembly pipe penetrating work by adopting the pipe penetrating device provided by the invention is as follows.

Early preparation work: two tube plates of the heat exchanger and a baffle plate 50 are fixedly arranged on a heat exchanger pore plate bracket according to the design requirement, the two tube plates are arranged at two ends of the heat exchanger pore plate bracket, and the baffle plate is arranged between the two tube plates, so that the tube plates and the plate holes of the baffle plate 50 are in the same horizontal direction, and the tube penetrating action is convenient. And installing an automatic pipe penetrating machine outside the tube plate at one side of the heat exchanger. The positions of the fixed conveying unit and the clamping conveying unit are adjusted according to the pipe diameter specification of the heat exchange pipe, and the pipe spacing of the pipe bundle guiding mechanisms at the front end and the rear end of the automatic pipe penetrating machine is adjusted. The tube plate penetrating device can penetrate through the pore plates at two ends of the heat exchanger at one time, the process that the tube plate at one end is firstly placed in the existing tube penetrating operation to penetrate through the tube and then the tube plate at the other end penetrates through the tube is changed, and the efficiency is improved.

S1: adjusting the position of the through pipe

The control system adjusts the position of the conveying unit, so that the output direction of the axis of the clamping heat exchange tube is consistent with the axis direction of a hole to be perforated of the baffle plate 50, the output direction of the axis of the clamping heat exchange tube is set as the origin of coordinates, and meanwhile, various specification parameters of the heat exchanger are set, so that the position of the perforated tube is accurately positioned;

the specification parameters of the heat exchanger comprise the distance between the heat exchanger baffle plates 50, the aperture diameter of the baffle plates and the arrangement of plate holes, and the moving step length of the conveying mechanism can be adjusted according to the parameters.

In this embodiment, the control system is preferably a PLC controller or an industrial personal computer control system, and the industrial personal computer control system includes but is not limited to a single chip microcomputer.

S2: feeding into a heat exchange tube bank

An operator takes a proper number of heat exchange tubes and places the heat exchange tubes on a carrier roller 31 of a carrier roller conveying mechanism A, and after the heat exchange tubes enter an active clamping tube conveying mechanism B, the output value of the heat exchange tubes fixes the gap between the conveying unit and a base plate of a pressing conveying unit; for the pipe penetrating device with the guide structure, after passing through the active clamping pipe conveying mechanism B, the heat exchange pipe firstly passes through the second guide structure and the first guide structure, then passes through a gap between the backing plates of the fixed conveying unit and the pressing conveying unit, and passes out through the pushing mechanism; after the heat exchange tube passes through the pushing structure, the pushing plate 29 is lifted;

particularly, a plurality of heat exchange tubes are arranged into a row according to the distance between the baffle plates, a special seeker is placed at the penetrating front end of each heat exchange tube, the tube bundle guide mechanism at the rear end is used for guiding the heat exchange tubes into the grooves of the conveying mechanism and the plate holes of the baffle plates, the clamping mechanism clamps the heat exchange tube row through the conveying mechanism, in the process, the heat exchange tube row is clamped by the fixed conveying unit and the pressing conveying unit, and the heat exchange tubes are driven by the driving unit to be conveyed forwards.

S3: threading action

S31: the heat exchange tube rows are continuously or intermittently inserted into the tube plates and the plate holes of the baffle plate 50 by the conveying mechanism, and when the heat exchange tube rows are conveyed to the tail parts of the heat exchange tube rows, the conveying unit stops working;

s32: adjusting the clamping degree of the fixed conveying unit and the pressing conveying unit to enable the conveying mechanism to move along the frame in the direction away from the heat exchanger, and enabling the heat exchange tube bank to exit from the tube pushing mechanism; the pushing plate 29 of the tube pushing mechanism falls, the conveying mechanism moves towards the direction close to the heat exchanger along the frame, the pushing plate 29 is contacted with the tail end of the heat exchange tube, and the heat exchange tube is pushed forwards continuously until the heat exchange tube completely enters the baffle plate 50;

in some embodiments of the present invention, the pushing mechanism may not be provided with the pushing plate 29, but the pushing plate 29 is installed at a suitable position of the conveying mechanism, and after the heat exchange tube is withdrawn from the conveying mechanism, the position of the conveying mechanism may be moved, so that the pushing plate 29 continues to push the heat exchange tube forward;

s4: driving the conveying mechanism to move to a certain position according to the interval of the baffle plates 50 of the heat exchanger set in the step S1, and repeating the steps S2-S3 to complete the tube penetrating action of the second row of heat exchange tubes;

specifically, the synchronous adjustment of the carrier roller conveying mechanism a and the tube penetrating conveying mechanism C is completed in the following manner.

The tube penetrating conveying mechanism C is arranged at the front end of the conveying direction of the carrier roller conveying mechanism A and is used for conveying and inserting the heat exchange tubes to the heat exchanger baffle plate 50.

The pipe-penetrating conveying mechanism C is provided with a driving mechanism, and the position of the pipe-penetrating conveying mechanism C can be adjusted on multiple degrees of freedom so as to be matched with heat exchange holes in different rows and columns on the baffle plate 50. After the position of the pipe penetrating conveying mechanism C is adjusted, the position of the carrier roller conveying mechanism is required to be adjusted in a matched mode.

For height position adjustment: the pipe-threading conveying mechanism C is provided with a laser sensor device 52, and the light emitting direction of the laser sensor device 52 is directed toward the side end face of the base 1 on the side of the pipe-threading conveying mechanism C. Referring to fig. 32, when the light emitted from the laser sensing device 52 can impinge on the side end face, it can detect the turn-back light, indicating that the idler roller conveying mechanism a and the tube penetrating conveying mechanism C are located in the same conveying height conveying range. Referring to fig. 33, when the emitted light of the laser sensing device 52 cannot irradiate the side end face, which indicates that the idler roller conveying mechanism a and the tube penetrating conveying mechanism C are not at the same conveying height, the height of the pedestal 31 needs to be adjusted to follow until the laser sensing device 52 can detect the turn-back light.

Further, in some embodiments of the present invention, two laser sensing devices 50 may be provided, and the emitting rollers of the two laser sensing devices 50 are respectively located at the upper and lower edges of the side end surface when the idler roller conveying mechanism a and the tube penetrating conveying mechanism C are aligned. The emitted light of the two laser sensing devices 50 can be combined to more accurately achieve the high position alignment.

For the horizontal position adjustment: the pipe-penetrating conveying mechanism C and the carrier roller conveying mechanism A are synchronously driven and adjusted to keep the same horizontal position.

And S5, repeating the steps in sequence and the like, and repeating continuously until all the heat exchange tubes are penetrated, so as to finish the tube penetrating operation of the whole heat exchanger.

And after all the pipe penetrating work is finished, the automatic pipe penetrating machine is moved to a required standby position.

According to the automatic tube penetrating method for the heat exchanger tube bundle, the existing tube penetrating mode of a single heat exchange tube is changed into the mode that a plurality of heat exchange tubes penetrate simultaneously, automatic accurate hole positioning and mechanical continuous tube penetrating operation are achieved; the pipe penetrating requirement of a longer heat exchange pipe can be met; meanwhile, the pipe penetrating period is shortened, and the labor intensity of workers is reduced.

The method also realizes the simultaneous penetration of the tube plates at two sides of the heat exchanger at one time, changes the working procedures that the tube plate at one end is firstly placed for tube penetration and then the tube plate at the other end is placed for tube penetration in the existing tube penetration operation, and improves the efficiency.

The flow of the pipe penetrating device by using the pipe penetrating device is not limited to the above mode.

In practical application, the front group of heat exchange tubes and the rear group of heat exchange tubes can be input to the conveying mechanism without gaps, after the front group of heat exchange tubes are output by the conveying mechanism, the rear group of heat exchange tubes push the front group of heat exchange tubes forward to an installation position, and then the position of the conveying mechanism is adjusted to complete the insertion of the next group of heat exchange tubes; the pipe inserting method does not need to use a pushing plate, and can also ensure the installation effect and the working efficiency of the heat exchange pipe.

The efficiency and cost ratio of the pipe penetrating device provided by the invention and the existing manual pipe penetrating work are shown in table 1.

TABLE 1 table for comparing efficiency and cost

The total pipe penetration is 19 meters long and 9 meters long

Number of tubes passing through at a time

Number of workers

Unit price (yuan)

Time consuming

Cost (Yuan)

Prior art technique

2000 root/bark of Chinese angelica

1 root/time

4 persons

400

5 days

8000 yuan

Products of the invention

2000 root/bark of Chinese angelica

5 roots/time

2 persons

300

1.5 days

1200 yuan

Compared with the prior art, the product can be used for pipe penetrating operation under the condition that the pipe penetrating quantity is the same, so that the processing time can be shortened, the production efficiency can be improved, and the processing cost can be reduced.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.

Claims (15)

1. A tube threading device for a heat exchange tube bundle, comprising:

the frame is provided with an open accommodating space;

the fixed conveying unit is positioned in the open accommodating space;

the pressing conveying unit is positioned in the open accommodating space and is positioned at the upper part of the fixed conveying unit, and an adjustable space for accommodating the heat exchange tube is formed between the pressing conveying unit and the fixed conveying unit;

the driving unit is used for driving the fixed conveying unit and the pressing conveying unit to move;

the fixed conveying unit and the pressing conveying unit are both arranged into a two-layer structure, one outer layer is arranged into a crawler plate structure, the other inner layer is arranged into a chain structure, a soft base plate is arranged on the crawler plate structure, and grooves matched with the shapes of the heat exchange tubes are formed in the soft base plate;

the clamping unit is arranged on the fixed conveying unit or the pressing conveying unit and drives the fixed conveying unit or the pressing conveying unit to move up and down along the frame;

active centre gripping send pipe mechanism, active centre gripping send pipe mechanism includes:

the frame is provided with an accommodating space;

the cross beam is arranged at the top of the frame;

the pipe pressing mechanism is arranged in the accommodating space;

one end of the pipe pressing driving mechanism is connected with the cross beam, the other end of the pipe pressing driving mechanism is fixedly connected with the pipe pressing mechanism, and the pipe pressing driving mechanism drives the pipe pressing mechanism to move along the frame relative to the cross beam;

the auxiliary pipe pressing mechanism is fixedly arranged below the frame relative to the pipe pressing mechanism;

each group of rollers comprises an auxiliary roller arranged on the auxiliary pipe pressing mechanism and a driving roller arranged on the pipe pressing driving mechanism, and a pipe pressing adjustable space is formed between the auxiliary roller and the driving roller;

the roller driving piece is connected with the driving roller and drives the driving roller to rotate;

and the pipe outlet end of the pipe pressing adjustable space is aligned with the groove.

2. The heat exchange tube bundle threading device according to claim 1, further comprising at least one set of guide structures, said guide structures comprising:

a guide structure shell: the device comprises a first side wall and a second side wall which are oppositely arranged at intervals, wherein a first shaft mounting structure and a second shaft mounting structure are arranged on the first side wall at intervals along the height direction of the first side wall, and a first shaft mounting structure and a second shaft mounting structure are correspondingly arranged along the height direction of the second side wall;

the first roller assembly: the wheel assembly comprises a first wheel shaft and a first wheel roller arranged on the wheel shaft, wherein a plurality of wheel grooves are arranged on the first wheel roller at intervals, and two ends of the first wheel shaft are respectively arranged in a first shaft mounting structure of a first side wall and a second side wall and can rotate relative to the shaft mounting structures;

the second roller assembly: the wheel assembly comprises a second wheel shaft and a second wheel roller arranged on the wheel shaft, wherein a plurality of wheel grooves are arranged on the second wheel roller at intervals, and two ends of the second wheel shaft are respectively arranged in second shaft mounting structures of a first side wall and a second side wall and can rotate relative to the shaft mounting structures;

the first wheel roller groove is matched with the second wheel roller groove to form a wheel groove gap which is used as a pipe fitting clamping space; a pipe fitting inlet and a pipe fitting outlet are respectively formed at two sides of the guide structure shell opposite to the clamping space; the wheel well gap is opposite the groove.

3. The heat exchange tube bundle threading device according to claim 2, comprising two sets of guide structures, and a transition guide structure;

the transition guiding structure comprises:

the base body is arranged at the inlet end of the pipe fitting of the guide structure shell, and a through hole is formed in the base body along the direction from the first end part to the second end part;

the first guide structure and the second guide structure are connected through the transition guide structure, and the through hole is aligned with the wheel groove gap of the first guide structure and the wheel groove gap of the second guide structure, so that the pipe fitting can pass through the second guide structure, the transition guide structure and the first guide structure; the wheel-slot gap of the first guide structure is aligned with the groove.

4. The tube passing device according to claim 2 or 3, wherein a push plate is disposed on the side wall of the guiding structure shell on the side of the guiding structure where the tube outlet of the guiding structure is located, the push plate is coupled to the guiding structure shell on the outlet side of the tube, and the coupling position of the push plate and the guiding structure shell is located above the tube outlet, and the push plate is configured to have a size: when the guide structure rotates downwards, the guide structure can cover the outlet of the pipe fitting and is attached to the side wall of the guide structure shell; the guide structure provided with the push plate is arranged at the output ends of the heat exchange pipes of the fixed conveying unit and the pressing conveying unit, and the wheel groove gaps are aligned with the grooves.

5. The heat exchange tube bundle threading device according to claim 1, wherein the shim plate is made of an elastic material and comprises a shim plate body, a plurality of grooves are arranged along the width direction of the body, each groove is a radian groove with a radian less than 180 degrees, and a straight portion is arranged between adjacent grooves.

6. The heat exchange tube bundle threading device according to claim 1, wherein the frame of the active tube clamping mechanism and the frame of the tube threading device are mounted on a same multi-degree-of-freedom motion platform and are driven to move synchronously.

7. The heat exchange tube bundle tube threading device according to claim 1 or 6, further comprising a roller conveyor mechanism comprising:

a base;

the support structure is as follows: is arranged on the base;

a roller carrier: at least two groups of sliding fit structures are arranged between the carrier roller frame and the support structure along the length direction of the carrier roller frame, and the carrier roller frame can generate relative motion with the support along the sliding fit structures;

carrying out roller: the number of the supporting roller frames is a plurality of, and the supporting roller frames are arranged in parallel at intervals along the length direction of the supporting roller frames and are arranged on the supporting roller frames;

a motion driving mechanism: the supporting roller frame is connected with the supporting roller frame so as to drive the supporting roller frame to move along the bracket;

the conveying direction of the carrier roller conveying mechanism is opposite to the groove.

8. The tube bundle threading device according to claim 7, wherein the pinch conveyor unit and the stationary conveyor unit are defined as a tube conveying mechanism, and a laser sensing device is mounted on the frame of the tube threading device, and light of the laser sensing device is emitted toward a side end surface of the base on a side facing the tube conveying mechanism; the laser sensing device can emit laser and receive side end surface refracted light;

a lifting driving mechanism is arranged below the base;

the pipe penetrating device control system receives the sensing signal of the laser sensing device and controls the lifting driving mechanism to act on the premise that the laser sensing device does not receive the refracted light signal so as to adjust the height of the base.

9. The tube bundle threading device according to claim 3 further comprising a synchronous transport detection control mechanism comprising:

shaft: the pressing conveying unit is arranged on the pipe penetrating device and is positioned at the output ends of the pressing conveying unit and the fixed conveying unit;

a guide plate: the number of the heat exchange tubes is a plurality of heat exchange tubes, the heat exchange tubes are matched with the number of the heat exchange tubes which can be conveyed by the tube penetrating machine at the same time, and the heat exchange tubes are rotatably connected with the shaft;

a detection wheel: each detection wheel can be contacted with the top of one conveyed heat exchange tube;

the coding sensor comprises: the rotating data of the peripheral surface of each detection wheel is detected at the radial extension end of the peripheral surface of each detection wheel;

and the pipe penetrating device control system is connected with each coding sensor to acquire rotation data of each detection wheel.

10. The heat exchange tube bundle threading device according to claim 9, wherein the detection wheel comprises:

a first wheel body: is a gear;

a second wheel body: the roller is coaxially connected with the first roller body and is contacted with the top of the conveying heat exchange pipe;

the code sensor is located at the radial extending end of the circumferential surface of the first wheel body.

11. The tube passing device according to claim 9, wherein the output ends of the pressing and transporting unit and the fixed transporting unit are provided with guide structures, the shaft is provided on a housing of the guide structures, and the detecting wheel is located at the outlet end of the tube member to contact the heat exchange tube.

12. The tube bundle threading device according to claim 11, wherein the tube exit end of the guide structure is provided with a transition guide structure, the upper base surface of the transition guide structure is provided with a cutout portion, the cutout portion communicating with the through hole and being sized to expose all of the output product, and the inspection wheel is positioned in the cutout portion such that the inspection wheel can contact the product to be conveyed.

13. The heat exchanger tube bundle threading device according to claim 1, wherein said clamping unit comprises:

the upper clamping roller beam is arranged on the inner side, close to the fixed conveying unit, of the pressing conveying unit and is connected with the frame in a sliding mode;

the upper clamping roller is in contact connection with the pressing conveying unit through an upper clamping roller beam;

the lower clamping roller beam is arranged on the inner side, close to the pressing and conveying protection mechanism, of the fixed conveying unit and is fixedly connected with the frame;

the lower clamping roller is in contact connection with the fixed conveying unit through a lower clamping roller beam;

a sliding mechanism; the sliding mechanism is arranged between the upper clamping roller beam and the frame, and drives the upper clamping roller beam to move up and down along the frame;

the clamping driving mechanism is arranged at the top of the frame, the driving end of the clamping driving mechanism is connected with the sliding mechanism, the clamping driving mechanism drives the sliding mechanism, the sliding mechanism drives the pressing conveying unit to move up and down along the frame through the upper clamping roller beam, so that the pressing conveying unit and the adjustable space between the fixed conveying units can continuously clamp and convey the heat exchange tube, and the fixed conveying unit and the adjustable space for accommodating the heat exchange tube are formed between the pressing conveying units.

14. The heat exchanger tube bundle tube passing device according to claim 1 or 13, wherein the driving unit comprises:

the upper driving roller is arranged on one side of the pressing and conveying unit, and an upper driving chain wheel is arranged in the upper driving roller;

the lower driving roller is arranged on one side of the fixed conveying unit, which is at the same position as the upper driving roller, a lower driving chain wheel is arranged in the lower driving roller, and the lower driving chain wheel is connected with the upper driving chain wheel through a transmission mechanism;

the driving part is connected with the upper driving chain wheel, the driving part drives the upper driving chain wheel to rotate, and the upper driving chain wheel drives the lower driving chain wheel to rotate reversely through the transmission mechanism, so that the fixed conveying unit and the pressing conveying unit are driven to move reversely and synchronously.

15. The heat exchange tube bundle tube threading device according to claim 14, wherein said transmission mechanism comprises:

the two driving wheels are respectively coaxially arranged with the upper driving chain wheel and the lower driving chain wheel and synchronously rotate with the connected driving chain wheels;

the two transition wheels are meshed and mounted, are positioned between the two driving wheels and are meshed and connected with the two driving wheels;

one side of the swing arm is connected with the center of the driving wheel, and the other side of the swing arm is connected with the center of the transition wheel;

and the connecting plates are positioned on two sides of the two transition wheels.

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