Rapid lifting type rotatable claw type hydraulic track jack

Abstract

The utility model belongs to the field of hydraulic track jack devices, and particularly relates to a rapid lifting type rotatable claw type hydraulic track jack which comprises a piston assembly, a claw type hydraulic track jack body and a claw type hydraulic track jack body. The integrated valve block is fixedly connected with the side wall of the piston cylinder, a high-low pressure integrated valve oil duct, a pressure release valve oil duct, an overflow valve oil duct, a flow compensation valve oil duct, a compensation conveying oil duct and a high-pressure conveying oil duct are arranged in the integrated valve block, and the pressure release valve oil duct, the overflow valve oil duct and the high-pressure conveying oil duct communicate with the high-low pressure integrated valve oil duct; the flow compensation valve oil duct is communicated with the compensation conveying oil duct, the compensation conveying oil duct and the high-pressure conveying oil duct are communicated with the piston working cavity, and at least a first oil seal bolt, a high-pressure pagoda spring, a first steel ball, a low-pressure spring seat, a low-pressure reset spring and a second steel ball are sequentially arranged in the high-low pressure integrated valve oil duct. An oil tank; and a plunger pump and a pressing hand assembly. According to the device, all the valve bodies are integrated in one valve block, all the valve bodies operate independently, maintenance is convenient, the valve bodies can be replaced independently, the flow compensation valves are additionally arranged, and the track lifting speed of the device is increased.

Description

Technical Field

[0001] The invention belongs to the field of hydraulic track-lifting machine devices, and in particular relates to a fast-lifting rotatable claw type hydraulic track-lifting machine. Background Art

[0002] A track lift is one of the important tools used for railway track maintenance and laying. It can be divided into a hand-operated track lift and a hydraulic track lift. The hydraulic track lift uses high-pressure oil to push the piston to achieve the purpose of track lifting. There are usually multiple valve bodies in the hydraulic track lift, which require regular maintenance and servicing to avoid accidents during operation.

[0003] However, the multiple valve bodies of the existing hydraulic road-lifting machine are relatively scattered, and maintenance is time-consuming and labor-intensive. In addition, the flow rate of the existing hydraulic road-lifting machine is limited, the lifting rate is slow, and the efficiency is low. Summary of the invention

[0004] The purpose of the present invention is to solve the problems of difficult maintenance and low lifting efficiency of the current hydraulic road lifters as described in the above background technology. A fast lifting type rotatable claw hydraulic road lifter is proposed. The hydraulic road lifter integrates multiple valve bodies, is easy to maintain, and adds a compensation oil channel to increase the flow rate, thereby achieving a fast lifting effect.

[0005] The technical solution adopted to achieve the above purpose is a fast lifting type rotatable claw type hydraulic road lifting machine, the fast lifting type rotatable claw type hydraulic road lifting machine comprises:

[0006] A piston assembly, the piston assembly comprising a piston cylinder, a piston rod group, a piston and a base, the piston rod group being arranged in the piston cylinder, the piston being fixedly connected to the top end of the piston rod group, the base being fixedly connected to the bottom end of the piston rod group, and a piston working chamber being arranged in the piston rod group;

[0007] An integrated valve block, wherein the integrated valve block is fixedly connected to the side wall of the piston cylinder, and the integrated valve block is provided with high- and low-pressure integrated valve oil passages, a pressure relief valve oil passage, an overflow valve oil passage, a flow compensation valve oil passage, a compensation delivery oil passage and a high-pressure delivery oil passage, the pressure relief valve oil passage, the overflow valve oil passage and the high-pressure delivery oil passage are connected with the high- and low-pressure integrated valve oil passages, the flow compensation valve oil passage is connected with the compensation delivery oil passage, the compensation delivery oil passage and the high-pressure delivery oil passage are connected with the piston working chamber, and at least a first oil seal bolt, a high-pressure pagoda spring, a first steel ball, a low-pressure spring seat, a low-pressure return spring and a second steel ball are sequentially provided in the high- and low-pressure integrated valve oil passages;

[0008] An oil tank, the oil tank is connected to the bottom of the integrated valve block, and two oil suction pipes are arranged in the oil tank, one of the oil suction pipes is connected to the oil passage of the low-pressure integrated valve, and the other oil suction pipe is connected to the oil passage of the flow compensation valve;

[0009] A plunger pump, wherein the bottom end of the plunger pump is connected to the integrated valve block;

[0010] The snap assembly comprises a snap, a connecting rod and a rotating sleeve. The snap is connected to the top of the plunger pump. The connecting rod connects the snap and the rotating sleeve. The rotating sleeve is sleeved on the outside of the plunger pump.

[0011] In the above technical scheme, various valve bodies are arranged in the integrated valve block, and the hydraulic oil in the oil tank is sucked in and pressed out into the piston assembly to lift the piston by arranging the first oil seal bolt, the high-pressure pagoda spring, the first steel ball, the low-pressure spring seat, the low-pressure return spring and the second steel ball, i.e., the high- and low-pressure one-way valve, in the high- and low-pressure integrated valve oil passages; a pressure relief valve is arranged in the pressure relief valve oil passage to unload the pressure and lower the piston; an overflow valve is arranged in the overflow valve oil passage to prevent the device from overloading and protect the device from safe operation; a flow compensation valve is arranged in the flow compensation valve oil passage to increase the flow and accelerate the piston lifting speed.

[0012] Furthermore, at least a third steel ball, a pressure regulating spring and a relief valve core are sequentially arranged in the relief valve oil passage, and an overflow hole is arranged at the bottom of the relief valve oil passage, and the overflow hole connects the relief valve oil passage with the oil tank.

[0013] In the above technical solution, the third steel ball, the pressure regulating spring and the overflow valve core constitute the overflow valve. When the device is overloaded, the hydraulic oil enters the integrated valve block through the oil suction pipe, pushing the second steel ball into the high and low pressure integrated valve oil channel, but cannot push the first steel ball away, pushing the third steel ball into the overflow valve oil channel and re-entering the oil tank through the overflow hole.

[0014] Furthermore, the pressure regulating spring and the overflow valve core are also provided with a first sealing ring.

[0015] In the above technical solution, the first sealing ring plays a sealing role to prevent leakage of hydraulic oil.

[0016] Furthermore, at least a fourth steel ball, a pressure relief spring and a pressure relief valve core are sequentially arranged in the pressure relief valve oil passage, a pressure relief hole is arranged at the bottom of the pressure relief valve oil passage, and the pressure relief hole connects the pressure relief valve oil passage and the oil tank.

[0017] Furthermore, a second sealing ring is provided between the pressure relief spring and the pressure relief valve core.

[0018] Furthermore, a knob is provided on one side of the integrated valve block, and the knob penetrates through the side wall of the integrated valve block and is fixedly connected to the pressure relief valve core.

[0019] In the above technical solution, the fourth steel ball, the pressure relief spring and the pressure relief valve core constitute a pressure relief valve. When the road lifting operation is completed, the piston height needs to be lowered. By rotating the knob, the pressure relief valve core is rotated outward a certain distance, so that the hydraulic oil can flush the fourth steel ball and re-enter the oil tank through the pressure relief hole, thereby reducing the hydraulic pressure and lowering the piston height.

[0020] Furthermore, at least a fifth steel ball, a compensation spring, a compensation spring seat, a sixth steel ball and a second oil seal bolt are sequentially arranged in the oil passage of the flow compensation valve.

[0021] In the above technical solution, the fifth steel ball, the compensation spring, the compensation spring seat, the sixth steel ball and the second oil seal bolt constitute a flow compensation valve. While the hydraulic oil enters the integrated valve block through the oil suction pipe connected to the low-pressure integrated valve oil channel, part of the hydraulic oil enters the integrated valve block through the oil suction pipe connected to the flow compensation valve oil channel. The hydraulic oil absorbed by the two is then pressed into the piston rod group together to increase the flow rate and increase the piston lifting speed.

[0022] Furthermore, a third sealing ring is disposed on the outer sleeve of the second oil seal bolt.

[0023] In the above technical solution, the third sealing ring prevents the hydraulic oil from leaking from the second oil seal bolt.

[0024] Furthermore, a handle is provided on the outside of the fuel tank.

[0025] In the above technical solution, the handle makes it convenient for workers to transfer and carry the track-lifting machine of the present invention.

[0026] Furthermore, a fourth sealing ring is disposed on the outer sleeve of the first oil seal bolt.

[0027] In the above technical solution, the fourth sealing ring prevents the hydraulic oil from leaking from the first oil seal bolt.

[0028] Furthermore, the snap assembly also includes a handle, and the handle is detachably connected to the snap.

[0029] The advantages of the present invention are:

[0030] 1. The present invention integrates multiple valve bodies into an integrated valve block. When maintenance is required, the pressure relief valve component only needs to be unscrewed by a knob, and the oil circuit in the integrated valve block can be cleaned by a purging device or the like. Each valve body is installed separately, and when a valve body is damaged, the valve body can be disassembled and replaced separately.

[0031] 2. The present invention increases the hydraulic oil flow in the device by setting a flow compensation valve oil channel, thereby achieving rapid lifting of the device.

[0032] 3. The present invention prevents the device from being overloaded and enhances the safety of the device by providing an overflow valve oil passage and an overflow valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 It is a schematic diagram of the oil passage in the integrated valve block of the present invention;

[0036] Figure 3 It is a schematic structural diagram of the integrated valve block of the present invention.

[0037] Illustrations: 1. Piston assembly, 2. Integrated valve block, 3. Oil tank, 4. Plunger pump, 5. Snap assembly, 101. Piston cylinder, 102. Piston rod assembly, 103. Piston, 104. Base, 201. High and low pressure integrated valve oil passage, 202. Pressure relief valve oil passage, 203. Overflow valve oil passage, 204. Flow compensation valve oil passage, 205. Compensation delivery oil passage, 206. High pressure delivery oil passage, 207. First oil seal bolt, 208. High pressure pagoda spring, 209. First steel ball, 210. Low pressure spring seat, 211 , low-pressure return spring, 212, second steel ball, 213, third steel ball, 214, pressure-adjusting spring, 215, overflow valve core, 216, overflow hole, 217, fourth steel ball, 218, pressure relief spring, 219, pressure relief valve core, 220, pressure relief hole, 221, knob, 222, fifth steel ball, 223, compensation spring, 224, compensation spring seat, 225, sixth steel ball, 226, second oil seal bolt, 301, oil suction pipe, 302, handle, 501, press handle, 502, connecting rod, 503, swivel sleeve. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] like Figure 1 As shown, a fast-lifting rotatable claw-type hydraulic road-lifting machine is composed of a piston assembly 1, an integrated valve block 2, an oil tank 3, a plunger pump 4 and a hand-pressing assembly 5, wherein the piston assembly is composed of a piston cylinder 101, a piston rod group 102, a piston 103 and a base 104, the piston rod group is arranged in the piston cylinder, the piston is fixedly connected to the top end of the piston rod group, the base is fixedly connected to the bottom end of the piston rod group, a piston working chamber is arranged in the piston rod group, the piston assembly receives the high-pressure oil in the integrated valve block, lifts the piston to perform road-lifting work, and this structure is a prior art and will not be repeated here.

[0041] like Figure 2 As shown, the integrated valve block is fixedly connected to the side wall of the piston cylinder, and high- and low-pressure integrated valve oil passages 201, pressure relief valve oil passages 202, overflow valve oil passages 203, flow compensation valve oil passages 204, compensation delivery oil passages 205 and high-pressure delivery oil passages 206 are arranged in the integrated valve block, wherein the high- and low-pressure integrated valve oil passages are formed by connecting the high-pressure valve oil passages and the low-pressure valve oil passages, the pressure relief valve oil passages are connected to the high-pressure valve oil passages, the overflow valve oil passages are connected to the low-pressure valve oil passages, the flow compensation valve oil passages are connected to the compensation delivery oil passages, and additional hydraulic oil is sucked into the piston working chamber in the piston rod group, the high-pressure delivery oil passage is connected to the high-pressure valve oil passage, and the hydraulic oil stored in the plunger pump is pressed into the piston working chamber in the piston rod group. In this embodiment, the ends of the compensation delivery oil passage and the high-pressure delivery oil passage converge and enter the piston working chamber in the piston rod group in a concentrated manner.

[0042] like Figure 3 As shown, a first oil seal bolt 207, a high-pressure pagoda spring 208, a first steel ball 209, a low-pressure spring seat 210, a low-pressure return spring 211 and a second steel ball 212 are sequentially arranged in the high- and low-pressure integrated valve oil passage. The first oil seal bolt is arranged at the end of the high- and low-pressure integrated valve oil passage to seal the high- and low-pressure integrated valve oil passage. Both ends of the high-pressure pagoda spring are respectively connected to the first oil seal bolt and the first steel ball, the first steel ball is connected to the low-pressure spring seat, and both ends of the low-pressure return spring are respectively connected to the low-pressure spring seat and the second steel ball.

[0043] A third steel ball 213, a pressure regulating spring 214 and a relief valve core 215 are sequentially arranged in the relief valve oil passage. The relief valve core is arranged at the end of the relief valve oil passage to seal the relief valve oil passage. Both ends of the pressure regulating spring are respectively connected to the relief valve core and the third steel ball. An overflow hole 216 is arranged at the bottom of the relief valve oil passage. The overflow hole connects the relief valve oil passage with the oil tank to re-deliver the overloaded hydraulic oil into the oil tank.

[0044] A fourth steel ball 217, a pressure relief spring 218 and a pressure relief valve core 219 are sequentially arranged in the pressure relief valve oil channel. The pressure relief valve core is arranged at the end of the pressure relief valve oil channel to seal the pressure relief valve oil channel. The two ends of the pressure relief spring are respectively connected to the pressure relief valve core and the fourth steel ball. A pressure relief hole 220 is arranged at the bottom of the pressure relief valve oil channel. The pressure relief hole connects the pressure relief valve oil channel and the oil tank, which is used to discharge the hydraulic oil into the oil tank to reduce the oil pressure. A knob 221 is arranged on one side of the integrated valve block. The knob passes through the side wall of the integrated valve block and is fixedly connected to the pressure relief valve core. The position of the pressure relief valve core in the pressure relief valve oil channel can be adjusted by rotating the knob to relieve pressure.

[0045] A fifth steel ball 222, a compensation spring 223, a compensation spring seat 224, a sixth steel ball 226 and a second oil seal bolt 227 are sequentially arranged in the flow compensation valve oil passage. The second oil seal bolt is arranged at the end of the flow compensation valve oil passage to seal the flow compensation valve oil passage. The end of the second oil seal bolt is connected to the sixth steel ball, and the two ends of the compensation spring seat are respectively connected to the sixth steel ball and the compensation spring, and one end of the compensation spring is against the fifth steel ball.

[0046] In this embodiment, sealing rings are arranged between the second oil seal bolt, the first oil seal bolt, the pressure relief spring and the pressure relief valve core, and between the pressure regulating spring and the overflow valve core to enhance the sealing performance of the device and prevent leakage of hydraulic oil. In other embodiments, additional parts such as gaskets may be arranged to further enhance the sealing performance of the device.

[0047] In this embodiment, the high-pressure valve oil passage, the low-pressure valve oil passage, the pressure relief valve oil passage, the overflow valve oil passage, and the flow compensation valve oil passage are variable diameter oil passages, and the diameters of the ends of the above oil passages are reduced so that the steel balls can block the oil passages under the action of the springs.

[0048] The oil tank is fixedly connected to the bottom of the integrated valve block. Two oil suction pipes 301 are provided in the oil tank, one of which is connected to the low-pressure integrated valve oil channel, and the other is connected to the flow compensation valve oil channel, so as to absorb the hydraulic oil in the oil tank and transport it to the integrated valve block. A handle is provided on the outside of the oil tank to increase the portability of the device.

[0049] The bottom end of the plunger pump is connected to the integrated valve block, and the click assembly consists of a click 501, a connecting rod 502, a rotating sleeve 503 and a handle, wherein the click is connected to the top of the plunger pump, the connecting rod connects the click and the rotating sleeve, the rotating sleeve is arranged on the outside of the middle section of the plunger pump, the handle is inserted into the click, and the plunger pump is operated by rotating the handle.

[0050] The working principle and process of the present invention are as follows: the operation of the plunger pump is controlled by rotating the handle in the hand-pressing assembly, the plunger pump generates suction, the hydraulic oil enters the low-pressure valve oil channel from one of the oil suction pipes, pushes the second steel ball, compresses the low-pressure return spring, and enters the plunger pump for storage, and the handle is turned again, the plunger pump presses the stored high-pressure oil into the high- and low-pressure integrated valve oil channels, the high-pressure oil pushes the first steel ball, compresses the high-pressure pagoda spring, enters the piston working chamber in the piston rod group from the high-pressure delivery oil channel, and lifts the piston; at the same time, the hydraulic oil enters the flow compensation valve oil channel from another oil suction pipe, pushes the fifth steel ball, compresses the compensation spring, enters the compensation delivery oil channel, and enters the piston working chamber in the piston rod group as a compensation flow, thereby increasing the piston lifting speed.

[0051] In the above process, when the handle stops moving, due to the pressure of each spring, each steel ball is reset to press against the liquid inlet of each oil channel to maintain the pressure in the piston working chamber of the piston rod group.

[0052] When the operation is completed, the pressure relief valve core moves outward by rotating the knob, and the pressure of the pressure relief spring on the fourth steel ball decreases. Due to the action of pressure, the hydraulic oil in the piston working chamber returns from the high-pressure delivery oil channel and enters the high and low pressure integrated valve oil channel. Since the first steel ball blocks the outlet, the hydraulic oil enters the pressure relief valve oil channel, flushes the fourth steel ball, and enters the oil tank from the pressure relief hole. The pressure in the piston working chamber gradually decreases, and the piston returns to its original position.

[0053] When the device is overloaded, the hydraulic oil pushes the second steel ball away, but cannot push the first steel ball away. The hydraulic oil enters the oil channel of the overflow valve, pushes the third steel ball away, and returns to the oil tank through the overflow hole, acting as a protection device.

[0054] Finally, it should be noted that the present embodiment is only used to illustrate the present invention and does not limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. A fast-lifting rotatable claw hydraulic track-lifting machine, characterized in that: The fast-lifting rotatable claw hydraulic track-lifting machine comprises: A piston assembly (1), the piston assembly comprising a piston cylinder (101), a piston rod assembly (102), a piston (103) and a base (104), the piston rod assembly being arranged in the piston cylinder, the piston being fixedly connected to the top end of the piston rod assembly, the base being fixedly connected to the bottom end of the piston rod assembly, and a piston working chamber being arranged in the piston rod assembly; An integrated valve block (2), wherein the integrated valve block is fixedly connected to the side wall of the piston cylinder, and the integrated valve block is provided with a high-low pressure integrated valve oil passage (201), a pressure relief valve oil passage (202), an overflow valve oil passage (203), a flow compensation valve oil passage (204), a compensation delivery oil passage (205) and a high pressure delivery oil passage (206); the pressure relief valve oil passage, the overflow valve oil passage and the high pressure delivery oil passage are in communication with the high-low pressure integrated valve oil passage, the flow compensation valve oil passage is in communication with the compensation delivery oil passage, the compensation delivery oil passage and the high pressure delivery oil passage are in communication with the piston working chamber, and the high-low pressure integrated valve oil passage is in communication with at least a first oil seal bolt (207), a high pressure pagoda spring (208), a first steel ball (209), a low pressure spring seat (210), a low pressure return spring (211) and a second steel ball (212); An oil tank (3), the oil tank being connected to the bottom of the integrated valve block, and having two oil suction pipes (301) arranged in the oil tank, one of the oil suction pipes being in communication with the oil passages of the high and low pressure integrated valves, and the other oil suction pipe being in communication with the oil passage of the flow compensation valve; A plunger pump (4), the bottom end of which is connected to the integrated valve block; A snap assembly (5), the snap assembly comprising a snap (501), a connecting rod (502) and a rotating sleeve (503), the snap is connected to the top of the plunger pump, the connecting rod connects the snap and the rotating sleeve, and the rotating sleeve is sleeved on the outside of the plunger pump.

2. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 1 is characterized in that: At least a third steel ball (213), a pressure regulating spring (214) and a relief valve core (215) are arranged in sequence in the relief valve oil passage, and an overflow hole (216) is arranged at the bottom of the relief valve oil passage, and the overflow hole connects the relief valve oil passage with the oil tank.

3. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 2 is characterized in that: The pressure regulating spring and the overflow valve core are also provided with a first sealing ring.

4. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 1 is characterized in that: At least a fourth steel ball (217), a pressure relief spring (218) and a pressure relief valve core (219) are arranged in sequence in the pressure relief valve oil passage, and a pressure relief hole (220) is arranged at the bottom of the pressure relief valve oil passage, and the pressure relief hole connects the pressure relief valve oil passage and the oil tank.

5. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 4 is characterized in that: A second sealing ring is arranged between the pressure relief spring and the pressure relief valve core.

6. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 4 is characterized in that: A knob (221) is provided on one side of the integrated valve block, and the knob penetrates through the side wall of the integrated valve block and is fixedly connected to the pressure relief valve core.

7. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 1 is characterized in that: At least a fifth steel ball (222), a compensation spring (223), a compensation spring seat (224), a sixth steel ball (225) and a second oil seal bolt (226) are sequentially arranged in the flow compensation valve oil passage.

8. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 7 is characterized in that: The second oil seal bolt outer sleeve is provided with a third sealing ring.

9. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 1, characterized in that: A handle (302) is provided on the outside of the oil tank.

10. The fast-lifting rotatable claw hydraulic track-lifting machine according to claim 1, characterized in that: The first oil seal bolt outer sleeve is provided with a fourth sealing ring.

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