CN109945656B - Manual hydraulic brick pushing machine - Google Patents
Manual hydraulic brick pushing machine Download PDFInfo
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- CN109945656B CN109945656B CN201910196011.4A CN201910196011A CN109945656B CN 109945656 B CN109945656 B CN 109945656B CN 201910196011 A CN201910196011 A CN 201910196011A CN 109945656 B CN109945656 B CN 109945656B
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Abstract
Aiming at the problem of poor brick raking effect caused by undersize force applied by a sliding hammer head in the brick raking machine in the prior art, the invention provides a manual hydraulic brick raking machine, which comprises a draw hook device, a force application device and a support, wherein the draw hook device is used for inserting into a brick hole of an oxygen lance brick and hooking the inner surface of the oxygen lance brick; the draw hook device comprises a draw hook mechanism and a draw hook expansion mechanism, wherein the head of the draw hook mechanism can penetrate through an inner hole of the oxygen lance brick, and the draw hook expansion mechanism is used for expanding the draw hook mechanism and clamping the oxygen lance brick from inside. The invention has the advantages of compact structure, convenient carrying, simple operation and rapid and reliable action, and is particularly suitable for pulling out a smaller gun hole.
Description
Technical Field
The invention relates to auxiliary dismantling equipment for an oxygen lance brick of a metallurgical furnace, in particular to a brick raking machine which is simple in structure, convenient to operate and capable of saving manpower and material resources.
Background
The oxygen lance is fixed by a refractory material wall brick (oxygen lance brick) with holes built in the furnace wall of the hearth. In the bottom blowing smelting process of the converter, gas needs to be blown into the smelting furnace through an oxygen lance, and the oxygen lance and an oxygen lance brick both can be burnt and damaged to be shortened and finally lose efficacy in use. Therefore, the oxygen lance and the oxygen lance brick need to be replaced at regular intervals.
The oxygen lance can be replaced only by detaching and replacing the oxygen lance brick for fixing the oxygen lance and the surrounding bricks on the periphery of the oxygen lance. The oxygen lance brick is the most difficult to dismantle, the length of the combination of the oxygen lance brick and the surrounding bricks is longer, the binding force is large, the time for replacing the oxygen lance brick after burning is uncertain and can change within a certain range, and the diameter of the oxygen lance hole is small, so that great difficulty is caused to bricks. At present, the method of breaking and dismantling a rhinestone, an electric hammer, an air pick and the like is basically adopted. The labor intensity is high, the demolishing time is long, the demolishing cost is very high, and the economic loss caused by production stoppage is larger.
The patent with publication number CN 205383892U discloses a brick raking machine for oxygen lance bricks of metallurgical furnaces, wherein the brick raking technical scheme of the oxygen lance bricks is that a hammer rod hammer head device with an expansion sleeve and an expansion rod is adopted, the expansion sleeve is expanded by the expansion rod to be tensioned with brick holes, and then a sliding hammer head is used for applying force to pull out the oxygen lance bricks. Because the acting force that the slip tup produced is very little, and the expansion sleeve is little taper structure, the pulling force effect that can produce is limited, so to the oxygen rifle brick that cohesion is big, it takes off the brick effect not good.
Disclosure of Invention
The invention provides a manual hydraulic brick raking machine, aiming at the problem that the brick raking effect is poor due to the fact that a sliding hammer head is used for applying too small force in the brick raking machine in the prior art. The brick pulling device has the advantages of simple structure, convenience in use and large brick pulling force.
The technical scheme adopted by the invention for solving the technical problems is as follows: a manual hydraulic brick raking machine comprises a drag hook device, a force application device and a support, wherein the drag hook device is used for being inserted into a brick hole of an oxygen lance brick and hooking the inner surface of the oxygen lance brick; the draw hook device comprises a draw hook mechanism which can lead the head part to pass through the inner hole of the oxygen lance brick and a draw hook expansion mechanism which is used for expanding the draw hook mechanism and clamping the oxygen lance brick from the inside.
The force applying device is arranged on the body of the brick raking machine and comprises a pressure applying mechanism, an executing mechanism and a hydraulic control system; the pressure applying mechanism comprises a connecting rod hinged with the body, a plunger cylinder arranged on the body, a pump plunger arranged in the plunger cylinder, and a force applying rod which is simultaneously hinged with the connecting rod and the pump plunger and used for applying pressure to the pump plunger; the acting force of the forcing rod drives the pump plunger to reciprocate in the plunger cylinder, and oil pressure is provided for the pressurizing device.
The actuating mechanism is of a double-piston-rod hydraulic cylinder structure and comprises a hydraulic cylinder and a piston, wherein the hydraulic cylinder is arranged in a same body with the body, the piston is arranged in the hydraulic cylinder, and the hydraulic cylinder is connected with the shell in a sealing fit manner to form a sealing cavity of the hydraulic cylinder; the piston is a double-piston-rod piston structure with a hole, wherein a left piston rod is connected with the drag hook mechanism and used for transmitting the pressure generated by the hydraulic cylinder to the drag hook mechanism so as to generate brick-scraping force, and a right piston rod is connected with the drag hook opening expanding mechanism so as to enable the drag hook opening expanding mechanism and the drag hook mechanism to synchronously move.
A double-piston-rod hydraulic cylinder structure is adopted for providing tension for the drag hook mechanism, and simultaneously, the drag hook mouth expanding mechanism is linked with the drag hook mechanism to realize the expansion and the closure of the drag hook mechanism; although the double-piston-rod hydraulic cylinder structure is adopted, the draw hook device has the characteristic of a single-action hydraulic cylinder, namely, the piston can only move rightwards through hydraulic pressure to realize the task of drawing a wall brick, but the right cavity is not required to be pressurized to realize the reset of the draw hook device, because the hydraulic reset method has low efficiency, the manual reset method is required; in other embodiments, a spring is arranged in the right cavity of the hydraulic cylinder to realize the reset of the draw hook device; the right cavity is arranged to serve as an oil tank, the diameter of the left piston rod and the diameter of the right piston rod are designed to be the same, and the fact that the total volume of the left cavity and the right cavity is unchanged when the pistons move in the hydraulic cylinders can be guaranteed, so that the oil tank with a large volume is omitted, and the size of the brick raking machine is reduced.
The hydraulic control system comprises a one-way valve, an oil storage cylinder, an oil spitting mechanism arranged in the oil storage cylinder, a rotary valve and a one-way valve; the input end of the one-way valve is connected with the plunger cylinder; the output end of the one-way valve is communicated with the left cavity of the hydraulic cylinder; the left cavity of the hydraulic cylinder is connected with the oil storage cylinder through a rotary valve, and the valve is in a closed state when the brick is taken off; the oil storage cylinder is connected with the input end of the one-way valve; the output end of the one-way valve is connected between the input end of the one-way valve and the plunger cylinder; the right cavity of the hydraulic cylinder is normally connected with the oil storage cylinder through a rotary valve; the oil storage cylinder is used for storing redundant oil generated after the oil output when the pump plunger presses the pump oil enters the actuating mechanism and the hydraulic control system, and supplementing the oil when the pump plunger returns to the plunger cylinder to absorb the oil; the oil storage cylinder comprises a cylinder body, a fixed block at the opening part of the cylinder body, a sealing piston arranged in the oil storage cylinder and a spring arranged between the fixed block and the sealing piston and used for resetting.
When the force applying device works, the draw hook device is inserted into a brick hole of a wall brick, and the draw hook opening expanding mechanism works to expand the head of the pull tube; the rotary valve is in a communicated state, the rear shell is pulled, the pull rod mechanism is driven to move rightwards to carry out quick idle stroke, the shoulder at the head of the pull pipe is hooked on the inner surface of a wall brick, and the rotary valve is rotated to close the left cavity of the hydraulic cylinder; pressurizing by a stress application rod, downward pumping oil by a pump plunger, enabling the pumped pressure oil to enter a left cavity of a hydraulic cylinder through a one-way valve, enabling a piston to move rightwards to drive a drag hook device to carry out brick-raking work, and enabling a right cavity of the hydraulic cylinder to flow into an oil storage cylinder through a rotary valve; the booster rod drives the pump plunger to return, negative pressure is formed in the plunger cylinder, and oil in the oil storage cylinder flows into the plunger cylinder through the one-way valve; the brick scraping task can be completed by repeatedly operating the process; after the brick picking task is completed, the rotary valve is rotated to enable the left cavity, the right cavity and the oil storage cylinder of the hydraulic cylinder to be communicated, and the rear shell is manually pushed, so that the reset of the drag hook device can be realized.
The draw hook device comprises a step type draw tube capable of performing elastic bulging; the pull tube is of a slender tubular structure with a head part, a middle part and a tail part, the inner hole of the head part of the pull tube is a taper hole, the outer edge of the head part of the pull tube is of a step structure with the diameter smaller than that of a gun hole of an oxygen lance brick, the tail part of the pull tube is provided with threads for connecting with a piston rod of a force applying device, the middle part of the pull tube is of a taper tube structure with equal wall thickness, and the head part and the middle part of the pull tube; the head of the pull pipe is closed in a free state, and the maximum diameter of a head flange is the same as the diameter of the tail; the diameter of the small end in the middle of the pull tube is the same as that of the tail part after the pull tube is expanded, the shoulder of the head part forms an action surface which acts on the inner surface of the wall brick to generate tension on the wall brick, the action force generated by the shoulder of the pull tube is designed to be the same as the strength of the middle of the pull tube, and the pull tube can generate larger tension and is particularly suitable for pulling out the wall brick with a smaller gun hole; the draw hook opening expanding mechanism comprises a pull rod, the head of the pull rod is provided with a conical wedge structure, the pull rod penetrates through the pull tube and the piston rod to be connected with the pull rod sleeve, and when the pull rod moves rightwards relative to the pull tube, the conical wedge at the head of the pull rod is wedged into a conical hole of the pull tube to expand the head of the pull tube.
The draw hook mouth expanding mechanism also comprises a connector, a pull rod sleeve, a screw rod and a rear shell, wherein the connector, the pull rod sleeve and the screw rod are arranged in the shell; the connector is coaxial with the shell and fixedly connected with the right piston rod; a pull rod sleeve is coaxially arranged in the other end of the connector; one end (left end) of the pull rod sleeve is fixedly connected with the pull rod thread; the other end (right end) of the pull rod sleeve is connected with the screw rod; the screw rod is fixedly connected with the rear shell through a screw; the connector and the pull rod sleeve are respectively limited by the first pin and the second pin and cannot rotate; the relative rotation between the rear shell and the connecting sleeve can only be generated under the limitation of a third pin arranged on the connecting sleeve and a circumferential groove on the rear shell; when the draw hook opening expanding mechanism works, the rotating rear shell drives the screw rod to rotate, so that the pull rod sleeve moves rightwards, the pull rod is driven to move rightwards, and the conical wedge structure at the head of the pull rod is wedged into the conical hole of the pull tube to expand the head of the pull tube.
According to the characteristics that the oxygen lance hole of the smelting furnace oxygen lance brick is small in diameter and large in binding force with surrounding bricks, the draw hook device penetrates through the oxygen lance hole of the oxygen lance brick, so that the draw hook device is expanded and clamped on the inner surface of the oxygen lance brick, and the support is propped against the outer surface of a wall brick connected with the oxygen lance brick; force is repeatedly applied to the force applying device, and the pull hook device is driven to move outwards through the hydraulic pressure boosting mechanism to pull out the oxygen lance brick.
The technical scheme has the beneficial effects that: the invention has the advantages of compact structure, convenient carrying, simple operation and rapid and reliable action, and is particularly suitable for pulling out a smaller gun hole.
Drawings
FIG. 1 is a schematic view of the hydraulic pressure drawing apparatus according to the present invention in an initial state;
FIG. 2 is a schematic view of the hydraulic pressure drawing device of the present invention when the tube is expanded;
fig. 3 is a partially enlarged view of a portion a in fig. 1.
The respective symbols in the figure: 1. the hydraulic cylinder comprises a pull rod, a pull pipe, a support, a hinge shaft, a body, a piston, a shell, a connector, a first pin, a second pin, a pull rod sleeve, a screw, a rear shell, a third pin, a screw, a reset spring, a round pin, a connecting rod, a round pin, a screw, a reset spring, a return spring, a piston, a round pin, a piston cylinder, a plunger, a pump plunger, a round pin, a force applying rod, a fixing block, a spring, a sealing piston, a sealing press ring, a handle, a rotary valve, a check valve and a hydraulic cylinder, wherein the pull rod is 2, the pull pipe, the support is 3, the hinge shaft is 4, the body is 5; a. the oil pump comprises a left oil cavity, a right oil cavity, an oil way, a plunger cavity and an oil storage cavity.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
In embodiment 1 of the hydraulic brick raking machine of the present invention, the hydraulic brick raking machine is used for removing oxygen lance bricks with small holes. As shown in fig. 1 and 2, the positions and moving directions of the respective parts in the drawings are defined as the positions and moving directions shown in the drawings.
The hydraulic brick raking machine consists of a drag hook device, a force applying device and a bracket 3; the draw hook device comprises a draw rod 1 and a draw tube 2; the pull rod 1 comprises a conical wedge and a rod body 1B which are connected in sequence; the pull tube 2 is a step type pull tube capable of performing elastic bulging, the pull tube 2 is of an elastic structure with a tail part connected and a head part and a middle part split along the radial direction, the head part of the pull tube 2 is provided with a taper hole capable of enabling a taper wedge of the pull rod to be wedged and bulged, and the head part of the pull tube 2 is provided with a step with a larger diameter; the head of the pull tube 2 is closed in a free state, the diameter of the head is the same as that of the tail when the pull tube 2 is closed, the pull tube can be inserted into a gun hole of an oxygen lance brick, and when the head of the pull tube 2 is expanded, the step at the head of the pull tube 2 can pull the oxygen lance brick, so that the pull tube has a larger pressure bearing area, generates a larger outward pulling force, and is particularly suitable for pulling out a smaller gun hole; the tail part of the pull tube 2 is provided with a thread structure and can be connected with a force application device through the thread structure; the draw hook opening expanding mechanism is used for expanding the head of the pull tube 2 after the pull tube 2 is inserted into a gun hole of an oxygen lance brick.
The draw hook mouth expanding mechanism comprises a shell 7, a connector 8, a pull rod sleeve 11, a screw rod 12 and a rear shell 13, wherein the head of the pull rod 1 is provided with a conical wedge capable of being wedged into a taper hole of the pull tube, and the head of the pull tube 2 can be expanded after the conical wedge of the pull rod 1 is wedged into the taper hole of the pull tube. The left end of the conversion sleeve 11 is fixedly connected with the connecting rod 1 through threads, the right end of the conversion sleeve 11 is matched with the screw 12 through a thread structure, the screw 12 is fixedly connected with the rear shell 13 and is fastened through a screw 15, the conversion sleeve 11 is provided with an axial guide groove structure which is matched with the screw 12 fixed on the connector 8 to prevent the conversion sleeve 11 from rotating when the conversion sleeve is subjected to the rotating force of the screw 12, the rear shell 13 is provided with a circumferential guide groove structure which is matched with a third pin 14 fixed on the connector 8 to prevent the rear shell 13 from axially moving with the connector 8 when rotating; when the rear shell 13 drives the screw 12 to rotate, the conversion sleeve 11 drives the pull rod 1 to move left and right, so that the expansion and the closing of the pull tube 2 are realized; the first pin 9 and the second pin 10 are used for limiting the conversion sleeve 11 and the connector 8 from rotating when being stressed, and the third pin 14 is used for preventing the rear shell 13 and the screw 12 from moving axially when being stressed; the bracket 3 is hinged on the hydraulic cylinder through a hinged shaft 4, and supports the brick raking machine on the outer surface of a wall brick during operation.
The force applying device comprises a hydraulic pressurizing and drawing device and a manual pressurizing device; the force application device comprises a hydraulic cylinder 32, a piston 6 and a hydraulic pressurization drawing device which is arranged on the hydraulic cylinder 32 and is used for controlling the piston 6 to translate/reset in the hydraulic cylinder 32; the hydraulic pressurizing and drawing device comprises a connecting rod 18 arranged on a hydraulic cylinder 32, a plunger cylinder 20 arranged on the hydraulic cylinder 32, a pump plunger 21 arranged in the plunger cylinder 20, an stressing rod 23 which is hinged with the connecting rod 18 and the pump plunger 21 simultaneously and used for pressurizing or depressurizing liquid in the plunger cylinder 20, and a hydraulic control system used for storing and discharging oil; the plunger cylinder 20 and the pump plunger 21 form a pressure pump, the hydraulic cylinder 32 and the piston 6 of the double-connecting rod form a pressure cylinder, the hydraulic cylinder 32 is fixedly connected with the shell 7, the left end of the piston 6 of the double-connecting rod is in threaded connection with the pull pipe 2, the right end of the piston 6 of the double-connecting rod is in threaded connection with the connector 8, an inner hole of the piston 6 of the double-connecting rod is used for enabling the pull rod 1 to pass through, and the connector 8 is matched with the pull rod moving mechanism.
The hydraulic cylinder 32 is divided into a left oil chamber a and a right oil chamber b by a piston 6 of a double connecting rod, and the hydraulic control system comprises an oil storage cylinder, a rotary valve 29, a one-way valve 30 and a one-way valve 31; a fixed block 24 is fixed at the opening part of the oil storage cylinder, a spring 25 and a sealing piston 26 are hung below the fixed block 24, the sealing piston 26 is in sliding sealing fit with the inner wall of the oil storage cylinder, and the volume of an oil storage cavity e of the oil storage cylinder can be changed according to the oil pressure under the elastic action of the spring 25, so that the oil storage cylinder has the functions of oil storage and oil spitting; the rotary valve 29 is used for communicating the right oil chamber b of the pressure cylinder with the oil storage chamber e, and the on-off of the left oil chamber a and the right oil chamber b of the pressure cylinder is controlled by rotating the rotary valve 29; the check valve 30 is used for one-way conduction of oil in the oil storage cavity e to a plunger cavity d of the pressurizing pump, and the check valve 31 is used for one-way conduction of oil in the plunger cavity d of the pressurizing pump to a left oil cavity a of the pressurizing cylinder; the sectional area of the inner cavity of the pressurizing cylinder is far larger than that of the inner cavity of the pressurizing pump, and the hydraulic pressurizing and drawing device consisting of the pressurizing cylinder and the pressurizing pump has a large pressurizing ratio.
The stress application rod 23 and the connecting rod 18 form a manual pressurizing device, two ends of the connecting rod 18 are hinged with the hydraulic cylinder 32 and the left end of the stress application rod 23 through a first round pin 17 and a second round pin 19 respectively, the stress application rod 23 is hinged with the rod part of the pump plunger 21 through a third round pin 22, the right end of the stress application rod 23 is a manual stress application end, the stress application rod 23 is divided into a left stress application section and a right stress application section by the third round pin 22, obviously, the length of the stress application section is far greater than that of the stress application section, so that a large force can be applied to the pump plunger 21 through the round pin 22 when a small force is applied to the stress application rod 23, namely, the stress application rod 23 has a large pressurizing ratio.
In the embodiment, the hydraulic cylinder adopting the double-connecting-rod piston has the advantages that the sectional areas of the cavity a and the cavity b of the hydraulic cylinder are the same, and the volumes of the cavity a and the cavity b are equal when the piston moves, so that the volume of an oil storage cavity does not need to be increased, and the size of a force application device is minimum; in other embodiments, a single-link piston cylinder structure may be adopted, in which case the pull rod moving mechanism needs to be arranged at the left end of the cylinder, and the volume of the oil storage chamber needs to be increased.
The force applying device comprises a manual pressurizing device and a hydraulic pressurizing drawing device; the manual pressurizing device adopts a lever type force application device; the hydraulic pressurizing drawing device comprises a hydraulic cylinder 32 and a pressurizing pump, wherein the hydraulic cylinder 32 adopts a double-piston-rod hydraulic cylinder structure, the pressurizing pump adopts a plunger pump structure driven by a lever type pressurizing rod, the pressurizing section length of the pressurizing rod 23 is far larger than the length of a restraining section, and the sectional area of a hydraulic cavity of the hydraulic cylinder 32 is far larger than that of a plunger, so that the hydraulic pressurizing drawing device has a large pressurizing ratio, the boosting multiple can reach thousands of times, and a large brick-raking force can be generated by applying pressure to the pressurizing rod with small force, so that a complex power device is omitted. The hydraulic cylinder 32 adopts a double-piston-rod hydraulic cylinder structure, and a left piston rod and a right piston rod of the hydraulic cylinder are respectively connected with the pull tube 2 and the connector 8 and used for controlling the relative motion between the pull rod 1 and the pull tube 2, so that the expansion and the closing of the head part of the pull tube 2 are realized, and the reset of the draw hook device can also be realized by pushing the connector 8.
In this embodiment, the hydraulic cylinder 32 is disposed integrally with the body 5, and in other embodiments, the hydraulic cylinder 32 may be disposed separately and fixedly connected to the body 5.
In other embodiments, a spring is arranged in the right cavity of the hydraulic cylinder to realize the reset of the draw hook device; although the double-piston-rod hydraulic cylinder structure is adopted, the single-action hydraulic cylinder is used, namely, the piston can only move rightwards through hydraulic pressure to realize the task of drawing a wall brick, but the right cavity is not required to be pressurized to realize the reset of the draw hook device, because the hydraulic reset method has low efficiency; the right cavity b is arranged to be used as an oil tank, the diameters of the left piston rod and the right piston rod are designed to be the same, and the size of the left cavity and the size of the right cavity are unchanged when the pistons move in the hydraulic cylinders, so that the oil tank with larger volume is omitted, and the size of the brick raking machine is reduced.
The using method of the invention comprises the following steps:
1) hydraulic oil is filled in the hydraulic pressure increasing system;
2) inserting a hook device of the brick raking machine in the state shown in figure 1 into an oxygen lance hole of an oxygen lance brick, and propping a support 3 on a wall brick at the periphery of the oxygen lance brick as shown in figure 1;
3) rotating the rear shell 13, driving the pull rod 1 to move right through a screw structure consisting of the screw 12 and the pull rod sleeve 11, wedging the conical wedge at the head of the pull rod 1 into the conical hole of the pull tube 2, and expanding the step at the head of the pull tube 2, as shown in fig. 2;
4) the rotary valve 29 is rotated to communicate the left cavity a and the right cavity b of the hydraulic cylinder 32, the rear shell 13 is pulled to drive the drag hook device to move rightwards, the idle stroke of the drag hook device is completed, and the shoulder at the head of the pull pipe 2 is enabled to quickly hook the inner surface of a wall brick, so that the working efficiency of the equipment is improved;
5) the rotary valve 29 is reset, and a channel between the left cavity a of the hydraulic cylinder 32 and the right cavity b and the oil storage cavity e of the hydraulic cylinder is closed, so that the left cavity a can be pressurized;
6) the rear shell 13 is held by one hand, the booster rod 23 is held and pressed by the other hand, the pump plunger 21 is pressed into the plunger cylinder 20, at the moment, the one-way valve 30 is in a reverse closing state, so that the hydraulic oil in the plunger cavity d enters the left oil cavity a of the hydraulic cylinder 32 through the one-way valve 31, the piston 6 is forced to move right, the drag hook device is driven to apply pressure to the oxygen lance brick, the hydraulic oil in the right oil cavity b of the hydraulic cylinder 32 flows into the oil storage cavity e of the oil storage cylinder through the oil path c and the rotary valve 29, at the moment, the spring 25 is compressed, the sealing piston 26 moves outwards, and the volume of the oil storage cavity e;
7) the pressure force application rod 23 is pulled outwards, the pump plunger 21 absorbs oil in a return stroke, the one-way valve 31 is closed reversely, and the hydraulic oil in the oil storage cavity e flows into the plunger cavity d through the one-way valve 30 to complete one cycle;
8) repeating the actions of 6 and 7 to generate great tensile force on the oxygen lance brick so that the oxygen lance brick is separated from the peripheral wall brick;
9) the rear shell 13 is rotated reversely, the pull rod 1 moves leftwards through a screw structure consisting of the screw 12 and the pull rod sleeve 11, the conical wedge at the head of the pull rod 1 is separated from the conical hole of the pull pipe 2 to reduce the mouth of the pull pipe 2, and then the pull pipe 2 is pulled out from the hole of the oxygen lance brick;
10) the handle 28 is rotated to lead the left oil chamber a and the right oil chamber b of the hydraulic cylinder 32 to be communicated, and the piston 6 and the draw hook device are reset under the action of the reset spring 16;
11) the rotary valve 29 is reset, so that the left oil cavity a and the oil way c of the hydraulic cylinder 32 are closed, and the brick stripping operation of the next oxygen lance brick can be carried out.
The pressure ratio of the force applying device is the product of the pressure ratio of the hydraulic pressure drawing device and the pressure ratio of the manual pressure applying device, so that the force applying device has a great pressure ratio, the pressure ratio of the force applying device can reach thousands of times, and a great drawing force can be generated by using a small manual force.
In the embodiment, the pull rod moving mechanism adopts a screw rod structure, in other embodiments, the pull rod moving mechanism can also adopt a rotating pull pin structure, the pull rod is directly pulled to expand the pull tube 2, and then the pull pin is rotated to a step of the connector 8 to be locked; after the drawing is finished, the pull pin is rotated reversely to enable the pull pin to enter the sliding groove of the connector 8, the pull tube 2 can be closed by pushing the pull pin structure, and the structure acts more quickly.
It should be clear that the angle of the conical wedge is 12 ~ 20.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included therein.
Claims (4)
1. A manual hydraulic brick raking machine comprises a body, a drag hook device, a force application device and a support, wherein the drag hook device is arranged on the body and used for inserting a brick hole of an oxygen lance brick and hooking the inner surface of the oxygen lance brick, the force application device is used for driving the drag hook device to move towards the outer side of the oxygen lance brick so as to pull the oxygen lance brick out of a peripheral surrounding brick, and the support is used for supporting a wall brick at the periphery of the oxygen lance brick during disassembly; the draw hook device comprises a draw hook mechanism which can lead the head part to pass through the inner hole of the oxygen lance brick and a draw hook expansion mechanism which is used for expanding the draw hook mechanism and clamping the oxygen lance brick from the inside;
the method is characterized in that: the force applying device is connected with the drag hook mechanism, and the drag hook mechanism in the state of axially moving the expansion port is driven by hydraulic pressure to move the oxygen lance brick outwards so as to pull the oxygen lance brick out of the surrounding brick; then, the draw hook mechanism is restored to a necking state through the draw hook opening expanding mechanism, and the draw hook mechanism is taken out of the pulled oxygen lance brick;
the force applying device comprises a pressure applying mechanism, an actuating mechanism and a hydraulic control system; the pressure applying mechanism comprises a connecting rod hinged with the body, a plunger cylinder arranged on the body, a pump plunger arranged in the plunger cylinder, and a force applying rod which is simultaneously hinged with the connecting rod and the pump plunger and is used for applying pressure to the pump plunger; the acting force of the forcing rod drives the pump plunger to reciprocate in the plunger cylinder, so as to provide oil pressure for the pressurizing device;
the actuating mechanism is of a double-piston-rod hydraulic cylinder structure and comprises a hydraulic cylinder, a piston and a shell, wherein the hydraulic cylinder is arranged in a body with the body, the piston is arranged in the hydraulic cylinder, and the shell is arranged on one side of the hydraulic cylinder; the piston is a double-piston-rod piston structure with a hole, wherein a left piston rod is connected with the drag hook mechanism and used for transmitting the pressure generated by the hydraulic cylinder to the drag hook mechanism so as to generate brick-scraping force, and a right piston rod is connected with the drag hook opening expanding mechanism so as to enable the drag hook opening expanding mechanism and the drag hook mechanism to synchronously move.
2. The manual hydraulic brick raking machine according to claim 1, wherein: the hydraulic control system comprises a first one-way valve, an oil storage cylinder, an oil spitting mechanism arranged in the oil storage cylinder, a rotary valve and a second one-way valve; the input end of the first one-way valve is connected with the plunger cylinder; the output end of the first one-way valve is communicated with the left cavity of the hydraulic cylinder; the left cavity of the hydraulic cylinder is connected with the oil storage cylinder through a rotary valve, and the valve is in a closed state when the brick is taken off; the oil storage cylinder is connected with the input end of the second one-way valve; the output end of the second one-way valve is connected between the input end of the first one-way valve and the plunger cylinder; the right cavity of the hydraulic cylinder is normally connected with the oil storage cylinder through a rotary valve; the oil storage cylinder is used for storing redundant oil generated after the oil output when the pump plunger presses the pump oil enters the actuating mechanism and the hydraulic control system, and supplementing the oil when the pump plunger returns to the plunger cylinder to absorb the oil; the oil storage cylinder comprises a cylinder body, a fixed block at the opening part of the cylinder body, a sealing piston arranged in the oil storage cylinder and a spring arranged between the fixed block and the sealing piston and used for resetting.
3. The manual hydraulic brick raking machine according to claim 1, wherein: the draw hook device comprises a step type draw tube capable of performing elastic bulging; the pull tube is of a slender tubular structure with a head part, a middle part and a tail part, the inner hole of the head part of the pull tube is a taper hole, the outer edge of the head part of the pull tube is of a step structure with the diameter smaller than that of a gun hole of an oxygen lance brick, the tail part of the pull tube is provided with threads for connecting with a piston rod of a force applying device, the middle part of the pull tube is of a taper tube structure with equal wall thickness, and the head part and the middle part of the pull tube; the head of the pull pipe is closed in a free state, and the maximum diameter of a head flange is the same as the diameter of the tail; the diameter of the small end in the middle of the pull tube is the same as that of the tail part after the pull tube is expanded.
4. The manual hydraulic brick raking machine according to claim 1, wherein: the draw hook mouth expanding mechanism comprises a draw rod, and the head of the draw rod is provided with a conical wedge; the draw hook mouth expanding mechanism also comprises a connector, a pull rod sleeve, a screw rod and a rear shell sleeved on the shell; wherein, the connector is fixedly connected with the right piston rod; a pull rod sleeve is coaxially arranged in the other end of the connector; one end of the pull rod sleeve is fixedly connected with the pull rod thread; the other end of the pull rod sleeve is connected with the screw rod; the screw rod is fixedly connected with the rear shell through a screw; wherein, the connector and the pull rod sleeve can not rotate; only relative rotation can be generated between the rear shell and the connecting sleeve; when the draw hook opening expanding mechanism works, the rotating rear shell drives the screw rod to rotate, so that the pull rod sleeve moves rightwards, the pull rod is driven to move rightwards, and the conical wedge structure at the head of the pull rod is wedged into the conical hole of the pull tube to expand the head of the pull tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196011.4A CN109945656B (en) | 2019-03-15 | 2019-03-15 | Manual hydraulic brick pushing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196011.4A CN109945656B (en) | 2019-03-15 | 2019-03-15 | Manual hydraulic brick pushing machine |
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| CN203636730U (en) * | 2013-10-09 | 2014-06-11 | 中国石油化工股份有限公司 | Removal device for roller bit nozzle |
| CN205383892U (en) * | 2015-12-22 | 2016-07-13 | 河南豫光冶金机械制造有限公司 | Brick machine is taken off to metallurgical stove oxygen rifle brick |
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