CN211100833U - Crawler belt drawing machine - Google Patents

Abstract

The utility model discloses a crawler belt pulling machine, which belongs to the field of mechanical processing, enhances the stability of equipment during drawing and prolongs the service life of the equipment. The crawler belt pulling machine of the utility model comprises a frame, and the frame is provided with an upper and lower Two support frames, the outer circumference of the support frame is provided with an outer crawler belt for clamping and drawing pipes, an inner crawler belt for reducing frictional force generated during transmission is arranged between the outer crawler belt and the support frame, and the The frame is provided with a movable jaw device between the two support frames, and the jaw device is used to clamp the end of the pipe that has just been inserted into the frame, and pull the pipe to move to complete the initial operation. Pulling, the frame is provided with a plurality of synchronous rotating arms connected with the two supporting frames, the plurality of synchronous rotating arms can drive the two supporting frames to open and close relative to each other in the vertical direction when rotating, When the two support frames are separated, the jaw device can move, and when the two support frames are combined, the pipe can be clamped and pulled.

Description

Crawler puller

【Technical field】

The utility model relates to the field of mechanical processing, in particular to a crawler belt puller.

【Background technique】

In the existing drawing machine, during the drawing work, the overall stability of the equipment is insufficient, and it is difficult to ensure the quality of the produced pipes, and during the working process, the equipment will be worn due to the huge frictional force. The heat generated will also affect the normal use of the equipment, reduce the life of the equipment and some parts, and require a lot of time and manpower and material resources to maintain.

In the initial stage of drawing, there is a lack of drawing of the pipe, and the length of the end of the pipe extruded by the die is only a small section, so it is difficult to easily enter the normal production process. It will take a lot of time in this step and reduce production. efficiency.

【Content of utility model】

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and propose a crawler belt pulling machine, which enhances the stability of the equipment during drawing and prolongs the service life of the equipment.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions:

The crawler belt pulling machine includes a frame on which two upper and lower supporting frames are arranged at intervals, and the outer circumferences of the two supporting frames are provided with outer crawler belts for clamping and drawing pipes, and the outer crawler belts are connected with An inner crawler for reducing frictional force generated during transmission is provided between the support frames, and a movable jaw device is arranged between the two support frames on the frame, and the jaw device is used for Hold the end of the pipe that has just protruded into the frame, and pull the pipe to move to complete the initial drawing. The frame is provided with a plurality of synchronous rotating arms connected with the two support frames. When the two synchronizing arms are rotated, they can drive the two support frames to open and close relative to each other in the vertical direction. When the two support frames are separated, the jaw device can move. When the two support frames are combined, they can clamp, Pull the tube.

The crawler drawing machine is used to draw pipes, reduce the diameter and wall thickness of the pipes, and draw short thick pipes into long thin pipes. For the clamped pipe, there will be uninterrupted friction between the outer crawler and the support frame during transmission. After a long time of use, the support frame and the outer crawler will be greatly worn, and a larger amount of heat will be generated. And it takes a lot of energy to overcome the frictional force. The inner track is located between the outer track and the support frame. The outer track is driven outside the inner track. The contact area between the outer track and the inner track is small, resulting in less wear and tear. , the pliers mouth device is used to clamp the pipe at the initial stage of pipe drawing, and then starts to move with the pipe, which can ensure the stable drawing of the outer crawler, and the movement of the pliers mouth device will collide with the support frame, for this reason , the upper and lower support frames can be opened and closed relative to each other in the vertical direction, which is convenient for the movement of the pliers mouth device and the clamping and drawing of the pipes.

Further, the two sides of the support frame are provided with sprockets that control the transmission of the outer crawler belt, and the outer crawler belt is provided with a plurality of joint drawing dies with die grooves. Hold in the die groove, the inner track is composed of rollers and outer chain plates, the rollers are in contact with the outer track and the support frame, and the friction between the outer track and the inner track The force is the rolling friction force. The crawler shoe with the joint drawing die can clamp the pipe. When the outer crawler is driven, there will be friction between the inner crawler and the inner crawler. Under the action of the friction force, the roller can be driven to rotate. Large friction force, the inner crawler composed of rollers can drive along the outer circumference of the support frame while the outer crawler is driven, and there will also be a certain relative sliding between the outer crawler and the inner crawler. However, it is obvious that the resulting The friction force will be lower, the wear between the outer track and the rollers is extremely small, and it can be used for a long time without wear, and it is not easy to overheat.

Further, the outer crawler is composed of a plurality of crawler shoes, the joint-drawing die is slidably matched with the crawler shoe, and two sides of the outer crawler are provided with a plurality of pairs of restricting the joint-drawing dies on the crawler shoe. Displaced pressure plates, one side of the pressure plates on both sides can be dismantled. After the joint-drawing die is slidingly matched with the track shoe, its vertical displacement is limited. At the same time, in the horizontal direction, except for the sliding direction of the joint-drawing die on the track shoe, the movement in other directions is limited, and the pressure plate is used to limit the movement. The displacement of the joint drawing die in the sliding direction on the track plate, when replacing the joint drawing die, remove the pressure plate on one side, and then the joint drawing die can be removed.

Further, the jaw device includes a jaw seat, the front end of the jaw seat is provided with an open jaw mouth, the jaw seat is provided with a jaw seat for clamping pipes, and the rear end of the jaw seat is provided with a jaw seat. A pipe channel communicated with the mouth of the jaws. The pipe extends from the mouth of the pliers into the jaw seat. Under the clamping of the jaw seat, the pipe can be firmly clamped. With the movement of the jaw device, the pipe is drawn, and then the outer crawler begins to pull the pipe. The drawn pipe passes out of the rack through the jaws and pipe channels.

Further, the rear end of the frame is provided with a tail air cylinder, the tail air cylinder controls the displacement of the jaw device from the frame to the support frame, a baffle is arranged on the side of the jaw seat, and the jaw seat is provided with a baffle plate. Blocking protrusions are provided on both sides of the outer crawler belt, and the blocking protrusions can resist the baffle plate to control the displacement of the jaw device between the two support frames. Due to the limited stroke of the cylinder, the conditions for controlling the entire operation process cannot be met. Although the outer crawler can control the displacement of the jaw device, the necessary condition for the movement of the outer crawler to control the movement of the jaw device is that the jaw device needs to be close to the outer track, so the jaw The displacement of the device is divided into two parts, the displacement of the first part is controlled by the tail cylinder assembly, and the displacement of the second part is controlled by the outer track.

Further, a hydraulic cylinder is provided on the right side of the frame, the hydraulic cylinder is connected to a telescopic seat, a rack is provided on the upper and lower surfaces of the telescopic seat, and the plurality of synchronizing arms on the same level are connected by a pull rod, The synchronizing rotating arms at the middle ends of the plurality of synchronizing rotating arms on the same level are provided with quarter gears that mesh with the racks. The hydraulic cylinder can stably generate great thrust, and can smoothly push the synchronous boom to rotate, and the telescopic speed of the telescopic seat can be controlled through the program to control the speed of the outer crawler. The connection between the synchronous boom and the telescopic seat The method is meshing, which transmits the motion and power of the telescopic seat to the synchronous arm. The rack and pinion transmits a large amount of power, which is suitable for controlling the movement of the support frame and the outer crawler with a large weight. The rack and pinion transmission and the cooperation of the hydraulic cylinder, A constant transmission ratio can be guaranteed, and the tie rods between the synchronizing arms can ensure that the movements between the synchronizing arms rotating in the same direction are kept synchronous to meet the actual use requirements.

Further, an eccentric shaft is provided on the synchronizing arm, the synchronizing arm is connected with the support frame through the eccentric shaft, the support frame is provided with a horizontal elliptical hole, and the eccentric shaft extends into the Inside the horizontal oval hole. When the synchronous arm rotates, the eccentric shaft also rotates synchronously. When the pipe is loosened, the end of the eccentric shaft of the upper outer crawler moves from the end of the horizontal oval hole to the highest point of the horizontal oval hole, and the end of the eccentric shaft of the lower outer crawler moves from the end of the horizontal oval hole to the highest point of the horizontal oval hole. The end of the horizontal oval hole moves to the lowest point of the horizontal oval hole; when the pipe is clamped, the end of the eccentric shaft of the upper outer track moves from the highest point of the horizontal oval hole to the end of the horizontal oval hole, and the end of the eccentric shaft of the lower outer track moves from The lowest point of the horizontal oval hole moves to the end of the horizontal oval hole.

Further, a dual-output synchronous reducer is arranged on the right side of the frame, and the dual-output synchronous reducer and the sprocket are connected by a universal coupling. The transmission of the outer track is controlled by the sprocket, and the sprocket needs to be rotated by the transmission shaft to rotate. When the support frame moves, the sprocket will also move synchronously with it. Therefore, the choice of the transmission shaft is a universal coupling, which can meet the needs of use. The connection between the double output synchronous reducer and the sprocket is still maintained when the support frame and the sprocket move.

Further, the two support frames are provided with a plurality of tension blocks for tensioning the outer crawler belt and the inner crawler belt, and the plurality of tension blocks are divided into a first tension block and a second tension block. block and a third tension block, the first tension block and the second tension block tension the outer crawler and the inner crawler in the vertical direction, the third tension block tensions the two ends the outer track and the inner track.

Further, the support frame is provided with an oil cylinder connected with the first tension block, and the support frame is also provided with a push rod connected with the third tension block and a push rod for controlling the expansion and contraction of the push rod. Nut seat. The oil cylinder can control the first tension block and the second tension block to rise and fall quickly, and quickly tension the outer crawler and the inner crawler. By manually adjusting the nut seat, the third tension block at both ends can be controlled to expand, eliminating the inner crawler and the inner crawler at both ends. The gaps that appear between the supports.

These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings.

【Description of drawings】

The utility model will be further described below in conjunction with the accompanying drawings:

Fig. 1 is the front view of the crawler belt puller in the first embodiment of the utility model;

Fig. 2 is the rear view of the crawler belt puller in the first embodiment of the present utility model;

Fig. 3 is the axonometric view of the inner and outer crawler belts and the inner crawler belt according to the first embodiment of the utility model;

4 is a schematic structural diagram of the middle and outer crawler belts and the inner crawler belt according to the first embodiment of the present utility model;

Fig. 5 is the axonometric view of the support frame in the first embodiment of the present invention;

Fig. 6 is the front view of the pliers mouth device in the second embodiment of the present invention;

7 is a cross-sectional view of the pliers mouth device in the second embodiment of the present invention;

8 is a schematic structural diagram of the combination of the tail cylinder and the pliers nozzle device in the second embodiment of the present utility model;

Fig. 9 is the left side view of the pliers mouth device in the second embodiment of the present invention;

Fig. 10 is the axonometric view of the inner and outer crawler belts in the second embodiment of the utility model;

Fig. 11 is the rear view of the crawler belt puller in the third embodiment of the present invention;

12 is a cross-sectional view of the crawler belt puller in the third embodiment of the present utility model;

Fig. 13 is the right sectional view of the crawler tractor in the third embodiment of the present utility model;

Fig. 14 is the first structural schematic diagram of the support frame in the fourth embodiment of the present invention;

FIG. 15 is a second structural schematic diagram of the support frame in the fourth embodiment of the present invention.

Reference number:

rack 100;

Support frame 200, outer crawler belt 210, die groove 211, joint drawing die 212, crawler shoe 213, pressing plate 214;

Inner track 220, roller 221, outer chain plate 222;

supporting protrusions 230, sprockets 240, tooth slots 241, blocking protrusions 250;

The jaw device 300, the jaw seat 310, the jaw mouth 311, the jaw seat 312, the pipe channel 313, the baffle 320;

Synchronous arm 400, hydraulic cylinder 410, telescopic seat 420, rack 430, pull rod 440, quarter gear 450, eccentric shaft 460, horizontal oval hole 470;

Double output synchronous reducer 480, universal coupling 490;

The rear cylinder 500, the insert block 510, the side cylinder 520, the plug 530, and the socket 540;

The first tension block 600 , the second tension block 610 , the third tension block 620 , the oil cylinder 630 , the push rod 640 , and the nut seat 650 .

【Detailed ways】

The technical solutions of the embodiments of the present utility model will be explained and described below with reference to the accompanying drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, not all. Based on the examples in the implementation manner, other examples obtained by those skilled in the art without creative work, all belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", The orientation or positional relationship indicated by "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise", etc. is based on The orientation or positional relationship shown in the accompanying drawings is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the utility model.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more, unless otherwise expressly defined.

In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features The features are not in direct contact but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Example 1:

1 to 4 , the crawler belt puller includes a frame 100 . The left side of the frame 100 is provided with two upper and lower supporting frames 200 arranged at intervals, and the outer circumferences of the two supporting frames 200 are provided with outer frames for clamping and drawing pipes. Crawler 210, between the outer crawler 210 and the support frame 200 is provided with an inner crawler 220 for reducing frictional force generated during transmission, the frame 100 is provided with a movable jaw device 300 between the two support frames 200, The nozzle device 300 is used to clamp the end of the pipe that has just extended into the frame 100 and pull the pipe to move to complete the initial drawing. The right side of the frame 100 is provided with a plurality of synchronous rotating arms 400 connected with the two support frames 200 , when the plurality of synchronous rotating arms 400 are rotated, they can drive the two supporting frames 200 to open and close relative to each other in the vertical direction. When the two supporting frames 200 are separated, the jaw device 300 can move, and when the two supporting frames 200 are combined, they can be clamped and pulled. Pull out the tubing.

It should be noted that: taking Figure 1 as the standard, the right side in the figure is the front end, the left side in the figure is the rear end, the direction perpendicular to the drawing is the left and right sides, and the direction of injection into the drawing is the right side, the direction extending outwards from the inside of the drawing is the left side.

The crawler belt drawing machine is used to draw pipes and reduce the diameter and wall thickness of the pipes. The short thick pipes are drawn into long thin pipes, and the pipes can be clamped by the outer crawler belt 210, and with the transmission of the outer crawler belt 210, the pulling When the clamped pipe is pulled out, there will be uninterrupted friction between the outer crawler 210 and the support frame 200 during transmission. It generates a large amount of heat and consumes a lot of energy to overcome the frictional force. The inner crawler 220 is located between the outer crawler 210 and the support frame 200 . The contact area is small, resulting in less wear and tear. The jaw device 300 is used to clamp the pipe in the initial stage of pipe drawing, and then start to move with the pipe, which can ensure that the outer crawler 210 can be drawn stably , and the movement of the jaw device 300 will collide with the support frame 200. Therefore, the upper and lower support frames 200 can be opened and closed relative to each other in the vertical direction, which facilitates the movement of the jaw device 300 and the clamping and pulling of pipes. pull. Referring to FIGS. 4 and 5 , sprockets 240 for controlling the transmission of the outer crawler belt 210 are provided on both sides of the support frame. The outer crawler belt 210 is provided with a plurality of joint drawing dies 212 with die grooves 211. When the outer crawler belt 210 draws the pipe material, the pipe material is Clamped in the die groove 211, the inner crawler 220 is composed of rollers 221 and outer chain plates 222, the rollers are in contact with the outer crawler 210 and the support frame 200, and the friction between the outer crawler 210 and the inner crawler 220 is the rolling friction force . The crawler shoe with the joint-drawing die 212 can clamp the pipe, and when the outer crawler 210 is driven, there will be friction between the inner crawler 220 and the roller 221 can be driven to rotate under the action of the friction force. There is a large friction force between the frames 200. The inner crawler 220 composed of the rollers 221 can drive along the outer circumference of the support frame 200 while the outer crawler 210 is driven. However, it is obvious that the friction force generated will be lower, the wear between the outer track 210 and the rollers 221 is extremely small, and it can be used for a long time without wear, and it is not easy to overheat.

The sprocket 240 controls the transmission of the outer crawler belt 210 as follows: a plurality of support protrusions 230 are provided on both sides of the outer crawler belt 210, and the support protrusions 230 are inserted into the tooth slots 241 of the sprocket wheel 240. The engagement of the support protrusions 230 drives the outer crawler belt 210 to drive. Through such a transmission method, the sprocket 240 does not come into contact with the inner crawler belt 220 during rotation.

The outer crawler 210 is composed of a plurality of crawler shoes 213, and the joint-pulling die 212 is slidingly matched with the crawler shoe 213. The two sides of the outer crawler 210 are provided with a plurality of pairs of pressing plates 214 that limit the displacement of the joint-pulling mould 212 on the crawler shoe 213. One side of the pressing plate 214 is detachable. The crawler shoe 213 is provided with a dovetail groove. After the joint drawing die 212 is slidably matched with the crawler shoe 213, the joint drawing die 212 is restricted by the dovetail groove and cannot move in the vertical direction. The sliding direction on the plate 213 and the movement in other directions are restricted. The pressing plate 214 is used to limit the displacement of the sliding die 212 on the crawler shoe 213. When replacing the joining die 212, remove the pressing plate 214 on one side. , you can remove the joint drawing die 212;

Considering that one side of the outer crawler 210 is relatively close to the frame 100, it cannot be installed on the crawler shoe 213 from the dovetail notch on the side close to the frame 100. Therefore, the joint drawing die 212 is in the process of sliding and matching with the crawler shoe 213. Gradually approaching the frame 100, the pressure plate 214 can be installed on the joint drawing die 212 or the track shoe 213. If it is installed on the joint drawing die 212, the non-removable pressure plate 214 is located on the side away from the frame 100, and then The pressure plate 214 is installed on the joint drawing die 212 on the side close to the frame 100, and the pressure plate 214 can be installed on this layer, but because the distance from the frame 100 is too close, the operation is not enough direction, if the pressure plate 214 is installed on the track shoe 213, Then, the fixed pressing plate 214 can be arranged on the crawler shoe 213 on the side close to the frame 100 , so that it is more convenient to install the pressing plate 214 on the crawler shoe 213 on the side away from the frame 100 after the joint drawing die 212 is installed.

Embodiment 2:

This embodiment specifically describes the structure of the jaw device 300: with reference to FIGS. 6 and 7 , the jaw device 300 includes a jaw seat 310, the front end of the jaw seat 310 is provided with a jaw 311, and the jaw 311 is provided with a jaw for clamping pipes The pliers mouth seat 312 can slide in the pliers mouth mouth 311 , and the rear end of the pliers mouth seat 310 is provided with an open pipe channel 313 which communicates with the pliers mouth mouth 311 . The pipe extends from the pliers mouth 311 into the jaw seat 310. Under the clamping of the pliers mouth seat 312, the pipe can be firmly clamped. With the movement of the pliers device 300, the pipe is pulled out, and then the outer crawler tracks 210 starts to draw the pipe, and the drawn pipe passes out of the rack 100 through the jaw 311 and the pipe channel 313 .

In addition, this embodiment also proposes a structure for controlling the movement of the jaw device 300 : with reference to FIGS. 8 and 9 , a rear cylinder assembly is provided at the rear end of the frame 100 , and the rear cylinder assembly controls the jaw device 300 from the frame 100 to the support frame 200 The side of the jaw seat 310 is provided with baffles 320, and the two sides of the outer crawler 210 are provided with blocking protrusions 250. The blocking protrusions 250 can abut against the baffles 320 to control the movement of the jaw device 300 between the two support frames 200. displacement. Due to the limited stroke of the cylinder, the conditions for controlling the entire operation process cannot be met. Although the outer crawler 210 can control the displacement of the jaw device 300, the necessary condition for the outer crawler 210 to control the movement of the jaw device 300 is that the jaw device 300 needs to be close to the outside. The displacement of the track 210 and therefore the jaw device 300 is divided into two parts, the displacement of the first part is controlled by the tail cylinder assembly, and the displacement of the second part is controlled by the outer track 210 .

Further explanation: with reference to FIG. 10 , the tail cylinder assembly includes a tail cylinder 500 and an insert block 510 , a side cylinder 520 assembly is provided on the pliers mouth device 300 , and the side cylinder 520 assembly includes a side cylinder 520 and a plug 530 , and the pliers mouth device 300 There is a jack 540 on the top, the rear cylinder 500 controls the plug 510 to be inserted into the jack 540, and the side cylinder 520 controls the plug 530 to be inserted into the jack 540 from the side, and the plug 510 is fastened. The plug 510 is controlled by the rear cylinder 500 and can be inserted into the socket 540. The side cylinder 520 controls the plug 530 to block the plug 510 to prevent the plug 510 from moving out of the socket 540. This setting makes the pliers mouth device The 300 is always connected with the insert block 510 during the moving process, and the displacement of the first segment of the pliers-mouth device 300 can be completed.

For other contents not described in this embodiment, reference may be made to the first embodiment.

Embodiment three:

This embodiment proposes a method for controlling the up and down movement of the support frame 200. Specifically, referring to FIGS. 11 and 12, a hydraulic cylinder 410 is provided on the right side of the frame 100, the hydraulic cylinder 410 is connected to the telescopic seat 420, and the upper and lower surfaces of the telescopic seat 420 are provided with Rack 430, a plurality of synchronous rotating arms 400 on the same level are connected by pull rods 440, and the synchronous rotating arm 400 at the middle end of the plurality of synchronous rotating arms 400 on the same level is provided with a quarter meshing with the rack 430 One of the gears 450. The hydraulic cylinder 410 can stably generate a great thrust, can smoothly push the synchronous arm 400 to rotate, and can control the telescopic speed of the telescopic seat 420 through a program, so as to control the speed of the outer crawler 210 to rise and fall. The connection mode between the seats 420 is meshing, which transmits the motion and power of the telescopic seat 420 to the synchronizing arm 400, and the rack and pinion transmits a large amount of power, which is suitable for controlling the movement of the support frame 200 and the outer crawler 210 with a large weight. The combination of the rack and pinion transmission and the hydraulic cylinder 410 can ensure a constant transmission ratio, and the tie rods 440 between the synchronizing arms 400 can ensure that the movements between the synchronizing arms 400 rotating in the same direction are kept synchronous to meet the actual use requirements .

The method for controlling the supporting frame 200 to move only in the vertical direction is as follows: the synchronous rotating arm 400 is provided with an eccentric shaft 460, the synchronous rotating arm 400 is connected with the supporting frame 200 through the eccentric shaft 460, and the supporting frame 200 is provided with a horizontal elliptical hole 470, The eccentric shaft 460 extends into the horizontal oval hole 470 . When the synchronous arm 400 rotates, the eccentric shaft 460 also rotates synchronously. When the pipe is loosened, the end of the eccentric shaft 460 of the upper outer crawler belt 210 moves from the end of the horizontal oval hole 470 to the highest point of the horizontal oval hole 470, and the lower outer crawler belt The end of the eccentric shaft 460 of the 210 moves from the end of the horizontal oval hole 470 to the lowest point of the horizontal oval hole 470; when clamping the pipe, the end of the eccentric shaft 460 of the upper outer crawler 210 moves from the highest point of the horizontal oval hole 470 to the horizontal oval At the end of the hole 470 , the end of the eccentric shaft 460 of the lower outer track 210 moves from the lowest point of the horizontal oval hole 470 to the end of the horizontal oval hole 470 .

When the outer crawler 210 controls the jaw device 300 and draws the pipe, its body will be driven on the support frame 200. Considering that the support frame 200 will move up and down, this embodiment proposes a method for providing power to the outer crawler 210: refer to the figure 13. A dual-output synchronous reducer 480 is arranged on the right side of the frame 100 , and the dual-output synchronous reducer 480 and the sprocket 240 are connected by a universal coupling 490 . The transmission of the outer crawler 210 is controlled by the sprocket 240, and the sprocket 240 needs to be rotated by the transmission shaft to rotate. When the support frame 200 moves, the sprocket 240 will also move synchronously with it. Therefore, the selection of the transmission shaft is a universal coupling. The speed reducer 490 can meet the usage requirements and still maintain the connection between the dual-output synchronous reducer 480 and the sprocket 240 when the support frame 200 and the sprocket 240 move.

For other contents not described in this embodiment, reference may be made to the foregoing embodiment.

Embodiment 4:

In this embodiment, referring to FIG. 14 , two support frames 200 are provided with a plurality of tensioning blocks for tensioning the outer crawler belt 210 and the inner crawler belt 220 , and the plurality of tensioning blocks are divided into a first tensioning block 600 , a second tensioning block 600 and a second tensioning block 600 . The tension block 610 and the third tension block 620, the first tension block 600 and the second tension block 610 tension the outer crawler belt 210 and the inner crawler belt 220 in the vertical direction, and the third tension block 620 tensions the outer crawler belts 210 and 220 at both ends. Track 210 and inner track 220 .

Take the support frame 200 above as an example to illustrate:

When the first tension block 600 moves upward, it pushes the outer crawler belt 210 and the inner crawler belt 220 to move upward, the second tension block 610 is located on both sides of the first tension block 600, and one end of the second tension block 610 is rotatably connected with the support frame 200, The other end of the second tensioning block 610 is rotatably connected to the first tensioning block 600. When the first tensioning block 600 expands outward, the second tensioning block 610 is driven to tension the outer crawler belt 210 and the inner crawler belt 220. The third tensioning block 620 is located at both ends of the support frame 200, the third tension block 620 expands outward to tension the outer crawler 210 and the inner crawler 220 located at both ends of the support frame 200, and the outer crawler 210 and the inner crawler 220 located at the top of the support frame 200 are tensioned Afterwards, there may be a gap between the inner crawler belts 220 at both ends and the support frame 200 , and adjusting the third tension block 620 can reduce the gap, so that the inner crawler belt 220 and the support frame 200 are in close contact.

The method of controlling multiple tensioning blocks is: referring to FIG. 15 , the support frame 200 is provided with an oil cylinder 630 connected with the first tensioning block 600 , and the support frame 200 is also provided with a push rod connected with the third tensioning block 620 640 and a nut seat 650 that controls the extension and retraction of the push rod 640 . Considering the weight of the support frame 200 and the sprocket 240, the oil cylinder 630 is selected as the power component of the automatic adjustment assembly. The oil cylinder 630 can generate a large thrust and can control the first tension block 600 and the second tension block 610 to move up and down quickly , the outer crawler 210 and the inner crawler 220 are quickly tensioned. By manually adjusting the nut seat 650, the nut seat 650 controls the push rod 640 to move slowly through threaded cooperation, and the third tension block 620 at both ends can be adjusted little by little to expand, eliminating the two The gap that occurs between the inner track 220 of the end and the support frame 200.

For other contents not described in this embodiment, reference may be made to the foregoing embodiment.

The above are only specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Those skilled in the art should understand that the present utility model includes but is not limited to the accompanying drawings and the above specific embodiments. content described in. Any modifications that do not depart from the functional and structural principles of the present invention are intended to be included in the scope of the claims.

Claims (10)

1. Track allies oneself with draws machine, its characterized in that: the pipe drawing machine comprises a frame, two upper and lower support frames are arranged on the frame, the support frame periphery is equipped with an outer crawler belt used for clamping and drawing pipes, the outer crawler belt is provided with an inner crawler belt used for reducing friction force generated during transmission between the support frames, the frame is provided with a movable clamp mouth device, the clamp mouth device is used for clamping and just stretching into the pipe end part in the frame, and pulls the pipe to move and finish initial drawing, the frame is provided with a plurality of synchronous rotating arms connected with the two support frames, the two support frames can be driven when the synchronous rotating arms rotate to open and close relatively in the vertical direction, the clamp mouth device can move when the two support frames are separated, and the two support frames can clamp and draw pipes when combined.

2. The crawler linkage according to claim 1, wherein: the outer crawler belt is characterized in that chain wheels for controlling the outer crawler belt to drive are arranged on two sides of the support frame, a plurality of linkage-pulling dies with die grooves are arranged on the outer crawler belt, when the outer crawler belt pulls a pipe, the pipe is clamped in the die grooves, the inner crawler belt is composed of a roller and an outer chain plate, the roller is in contact with the outer crawler belt and the support frame, and friction force between the outer crawler belt and the inner crawler belt is rolling friction force.

3. The crawler linkage according to claim 2, wherein: the outer crawler belt is composed of a plurality of crawler belts, the combined drawing die is in sliding fit with the crawler belts, a plurality of pairs of pressing plates for limiting the displacement of the combined drawing die on the crawler belts are arranged on two sides of the outer crawler belt, and the pressing plates on one side far away from the rack are detachable.

4. The crawler linkage according to claim 1, wherein: the clamp mouth device comprises a clamp mouth seat, an open clamp mouth is arranged at the front end of the clamp mouth seat, a clamp mouth seat used for clamping a pipe is arranged in the clamp mouth, and a pipe channel communicated with the clamp mouth is arranged at the rear end of the clamp mouth seat.

5. The crawler linkage according to claim 4, wherein: the rear end of the rack is provided with a tail cylinder which controls the displacement of the clamp nozzle device from the rack to the support frames, the side face of the jaw seat is provided with a baffle, two sides of the outer crawler are provided with blocking bulges, and the blocking bulges can abut against the baffle to control the displacement of the clamp nozzle device between the two support frames.

6. The crawler linkage according to claim 2, wherein: the hydraulic cylinder is arranged on the right side of the rack and connected with the telescopic seat, racks are arranged on the upper surface and the lower surface of the telescopic seat, the synchronous rotating arms on the same level are connected through pull rods, and quarter gears meshed with the racks are arranged on the synchronous rotating arms at the middle end parts of the synchronous rotating arms on the same level.

7. The crawler linkage according to claim 6, wherein: the synchronous rotating arm is provided with an eccentric shaft, the synchronous rotating arm is connected with the support frame through the eccentric shaft, the support frame is provided with a horizontal elliptical hole, and the eccentric shaft extends into the horizontal elliptical hole.

8. The crawler linkage according to claim 7, wherein: the right side of the rack is provided with a double-output synchronous speed reducer, and the double-output synchronous speed reducer is connected with the chain wheel through a universal coupling.

9. The crawler linkage according to claim 1, wherein: be equipped with on two support frames and be used for the tensioning outer track with a plurality of tensioning pieces of interior track, a plurality of tensioning pieces divide into first tensioning piece, second tensioning piece and third tensioning piece, first tensioning piece with the vertical direction of second tensioning piece tensioning outer track with interior track, third tensioning piece tensioning both ends outer track with interior track.

10. The crawler linkage according to claim 9, wherein: the support frame is provided with an oil cylinder connected with the first tensioning block, and is also provided with a push rod connected with the third tensioning block and a nut seat for controlling the push rod to stretch.

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