Portable hydraulic puller device

Abstract

The utility model relates to the technical field of hydraulic pullers, in particular to a portable hydraulic puller device which comprises a machine body, a group of grabbing arms are arranged on the machine body, an ejector rod is arranged between the grabbing arms, a group of side plates are fixedly arranged on the machine body, a movable plate is arranged between the side plates in a sliding mode, and driving assemblies are arranged between the side plates and the movable plate. The driving assembly is used for driving the moving plate to slide, an abutting plate is fixedly arranged on the machine body, an oil storage soft tank is arranged between the moving plate and the abutting plate, an oil conveying pipe is arranged on the oil storage soft tank in a communicating mode, and a hydraulic assembly is arranged on the oil conveying pipe and used for driving the grabbing arm and the ejector rod to act. The workpiece dismounting device has the effects of reducing the labor intensity of operators and improving the workpiece dismounting efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pullers, in particular to a portable hydraulic puller device. Background Art

[0002] A hydraulic puller is a tool used to pull objects during mechanical maintenance. It is mainly used to disassemble parts such as bearings and sleeves, so that the damaged bearing or sleeve can be moved axially to remove the damaged bearing from the shaft.

[0003] In the related art, a Chinese patent with authorization announcement number CN214446006U provides a multi-gear push rod hydraulic puller, which includes a hydraulic cylinder, a pressure relief switch and a pressure rod are installed on the hydraulic cylinder, a push rod is installed on the output end of the hydraulic cylinder, the push rod is movably inserted into the push rod, the push rod is sleeved on the external threaded rod, the external threaded rod is threadedly connected to the hook claw seat, and the hook claw is hinged on the hook claw seat. When in use, first the pressure relief switch is turned on to release the pressure of the hydraulic cylinder, when the push rod is retracted into the external threaded rod, the pressure relief switch is turned off, and the position of the hook claw seat on the external threaded rod is adjusted so that the hook claw is hooked on the workpiece to be disassembled, and then the push rod is extended to the push rod to abut against the mechanical shaft, when the hydraulic puller is connected to the workpiece to be disassembled, the pressure rod on the hydraulic cylinder is pressed back and forth, and the push rod is moved out of the external threaded rod by the oil pressure, and the workpiece to be disassembled will gradually fall off from the mechanical shaft under the interaction force of the hook claw and the push rod.

[0004] In the process of implementing the present application, the inventors discovered that there are at least the following problems in this technology: the relative movement between the push rod and the externally threaded rod is achieved by the back-and-forth swinging of the pressure rod, and the back-and-forth swinging of the pressure rod depends on the operator's manual reciprocating pressure. Therefore, during the relative movement of the push rod and the externally threaded rod, the operator bears a greater labor intensity, and the relative movement of the push rod and the externally threaded rod is easily blocked due to operator fatigue, thereby reducing the disassembly efficiency of the workpiece. Utility Model Content

[0005] In order to reduce the labor intensity of operators and improve the disassembly efficiency of workpieces, the present application provides a convenient hydraulic puller device.

[0006] The portable hydraulic puller device provided in this application adopts the following technical solution:

[0007] A portable hydraulic puller device comprises a machine body, a group of grab arms are arranged on the machine body, a push rod is arranged between the grab arms, a group of side plates are fixedly arranged on the machine body, a movable plate is slidably arranged between the side plates, a driving component is arranged between the side plates and the movable plate, the driving component is used to drive the movable plate to slide, an abutment plate is fixedly arranged on the machine body, an oil storage tank is arranged between the movable plate and the abutment plate, an oil pipeline is connected to the oil storage tank, a hydraulic component is arranged on the oil pipeline, and the hydraulic component is used to drive the grab arms and the push rod to move.

[0008] By adopting the above technical scheme, when the hydraulic puller is connected to the workpiece to be disassembled, the driving assembly drives the movable plate to approach the abutment plate. In the process of the movable plate approaching the abutment plate, the movable plate and the abutment plate work together to squeeze the oil storage tank, so that the hydraulic oil in the oil storage tank enters the hydraulic assembly through the oil pipe, and then the hydraulic assembly drives the grasping arms to approach each other to clamp the workpiece to be disassembled. When the hydraulic puller is connected to the workpiece to be disassembled, the hydraulic assembly drives the push rod to push the mechanical axis, so that the grasping arm and the push rod are relatively displaced, and the workpiece to be disassembled gradually falls off the mechanical axis under the interaction force between the grasping arm and the push rod, and then the hydraulic assembly drives the grasping arms to move away from each other, so that the grasping arms are separated from the disassembled workpiece, reducing the situation where the operator manually presses the pressure rod back and forth, reducing the labor intensity of the operator, and improving the disassembly efficiency of the workpiece.

[0009] Preferably, the driving assembly includes a motor, a gear, a rack, a slide rail and a slider, the slide rail is fixedly arranged on the opposite surface of the side plate, the slider is slidably arranged in the slide rail, the rack is fixedly arranged on the slider, the rack is fixedly connected to the movable plate, the motor is fixedly arranged on the side plate, the gear is fixedly arranged on the output shaft of the motor, and the gear and the rack are meshed with each other.

[0010] By adopting the above technical solution, the rack and the movable plate are slidably connected to the side plate through the slider, the motor is started, the output shaft of the motor drives the gear to rotate, the gear rotation causes the rack to slide along the slide rail, and the movement of the rack drives the movable plate to move.

[0011] Preferably, the hydraulic assembly includes a group of opening and closing hydraulic rods and a pushing hydraulic rod, the output shaft of the opening and closing hydraulic rod is fixedly connected to the back of the grab arm, the output shaft of the pushing hydraulic rod is fixedly connected to the push rod, a lifting seat is commonly provided on the opening and closing hydraulic rod and the pushing hydraulic rod, a lifting hydraulic rod is fixedly provided on the lifting seat, the lifting hydraulic rod is fixedly connected to the machine body, and the opening and closing hydraulic rod, the pushing hydraulic rod and the lifting hydraulic rod are all interconnected with the oil pipeline.

[0012] By adopting the above technical scheme, when the oil storage tank is squeezed, the hydraulic oil in the oil storage tank can enter the opening and closing hydraulic rod, the pushing hydraulic rod and the lifting hydraulic rod through the oil pipe. When the hydraulic oil in the oil storage tank enters the opening and closing hydraulic rod through the oil pipe, the output shaft of the opening and closing hydraulic rod extends and drives the grab arms to approach each other. When the hydraulic oil in the oil storage tank enters the pushing hydraulic rod through the oil pipe, the output shaft of the pushing hydraulic rod extends and drives the push rod to approach the mechanical shaft. When the hydraulic oil in the oil storage tank enters the lifting hydraulic rod through the oil pipe, the output shaft of the lifting hydraulic rod extends and drives the lifting seat to move in the height direction. The lifting seat drives the grab arms on the opening and closing hydraulic rod and the push rod on the pushing hydraulic rod to move in the height direction.

[0013] Preferably, an opening and closing pipe is arranged between the opening and closing hydraulic rod and the oil pipeline, an opening and closing valve is arranged on the opening and closing pipe, a pushing pipe is arranged between the pushing hydraulic rod and the oil pipeline, a pushing valve is arranged on the pushing pipe, a lifting pipe is arranged between the lifting hydraulic rod and the oil pipeline, a lifting valve is arranged on the lifting pipe.

[0014] By adopting the above technical scheme, when the oil storage tank is squeezed, the opening and closing of the opening and closing pipe is controlled by controlling the switch of the opening and closing valve, thereby controlling whether the hydraulic oil in the oil storage tank enters the opening and closing hydraulic rod, and the opening and closing of the pushing pipe is controlled by controlling the switch of the pushing valve, thereby controlling whether the hydraulic oil in the oil storage tank enters the pushing hydraulic rod, and the opening and closing of the lifting pipe is controlled by controlling the switch of the lifting valve, thereby controlling whether the hydraulic oil in the oil storage tank enters the lifting hydraulic rod.

[0015] Preferably, an opening and closing pump is provided between the opening and closing hydraulic rod and the oil pipeline, a pushing pump is provided between the pushing hydraulic rod and the oil pipeline, and a lifting pump is provided between the lifting hydraulic rod and the oil pipeline.

[0016] By adopting the above technical scheme, when the opening and closing pump is started, the opening and closing pump pumps the hydraulic oil in the opening and closing hydraulic rod into the oil storage tank, so that the output shaft of the opening and closing hydraulic rod drives the grab arms away from each other; when the pushing pump is started, the pushing pump pumps the hydraulic oil in the pushing hydraulic rod into the oil storage tank, so that the output shaft of the pushing hydraulic rod drives the push rod away from the mechanical shaft; when the lifting pump is started, the lifting pump pumps the hydraulic oil in the lifting hydraulic rod into the oil storage tank, so that the output shaft of the lifting hydraulic rod drives the lifting seat to move in the height direction.

[0017] Preferably, a placement seat is fixedly arranged on one side of the movable plate toward the abutment plate, a placement groove is provided on the placement seat, the placement groove passes through the side wall of the placement seat, the oil storage tank is arranged in the placement groove, and a clearance hole is provided on the abutment plate, and the clearance hole is for the placement seat to be inserted.

[0018] By adopting the above technical solution, the oil storage tank is installed in the placement groove of the placement seat. When the amount of oil in the oil storage tank is small, the placement seat moves to the clearance hole, so that the movable plate and the abutment plate squeeze the oil storage tank to the maximum extent.

[0019] Preferably, the abutment plate is fixedly connected to one side of the side plate, and a back plate is jointly arranged on the other side of the side plate; a cover plate is jointly arranged on the back plate, the side plate and the top of the abutment plate; one end of the cover plate is hinged to one of the side plates, and the other end of the cover plate is detachably connected to the other side plate; the back plate, the side plate, the abutment plate and the cover plate together constitute a box structure; an oil pipe hole is opened on the abutment plate, and the oil pipeline is inserted into the oil pipe hole.

[0020] By adopting the above technical solution, the back plate, side plate, abutment plate and cover plate cover the oil storage tank and the drive component in a box structure composed of the back plate, so as to achieve the effect of protecting the oil storage tank and the drive component.

[0021] Preferably, a mounting groove is provided on the end wall of the push rod, a mounting seat is detachably provided in the mounting groove, a push pin is fixedly provided on one end of the mounting seat outside the mounting groove, a limiting ring groove is provided on the inner wall of the mounting groove, a plurality of limiting blocks are slidably provided in the limiting ring groove, the limiting blocks are fixedly connected to the side wall of the mounting seat, a plurality of slots are provided on the mounting groove, one end of the slots is communicated with the limiting ring groove, the other end of the slots passes through the end wall of the push rod, and the slots are for the limiting blocks to move.

[0022] By adopting the above technical solution, when installing the ejector pin on the ejector rod, firstly, the limit block on the mounting seat is inserted into the limit ring groove through the slot, and then the mounting seat is rotated to make the limit block clamped in the limit ring groove, and the ejector pin is installed on the end of the ejector rod, and then according to the size of the mechanical shaft, a suitable size of ejector pin is selected and installed on the ejector rod.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By setting the machine body, grab arm, push rod, side plate, moving plate, drive assembly, abutment plate, oil storage tank, oil pipeline and hydraulic assembly, the labor intensity of operators is reduced and the disassembly efficiency of workpieces is improved;

[0025] 2. By setting the motor, gear, rack, slide rail and slider, the effect of driving the moving plate to slide is achieved;

[0026] 3. By setting the mounting groove, mounting seat, ejector pin, limit ring groove, limit block and slot, according to the size of the mechanical shaft, select the ejector pin of the appropriate size and install it on the ejector rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1It is a structural schematic diagram of a portable hydraulic puller device in an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram showing the connection relationship between the oil storage tank and the side plate in the embodiment of the present application.

[0029] Figure 3 yes Figure 2 Enlarged view of part A.

[0030] Figure 4 It is a schematic diagram showing the connection relationship between the grab arm and the opening and closing telescopic rod in the embodiment of the present application.

[0031] Figure 5 It is a schematic diagram showing the connection relationship between the push rod and the pushing telescopic rod in the embodiment of the present application.

[0032] Figure 6 It is a schematic diagram showing the connection relationship between the lifting seat and the lifting telescopic rod in the embodiment of the present application.

[0033] Figure 7 It is a schematic diagram showing the connection relationship between the ejector rod and the ejector pin in the embodiment of the present application.

[0034] Description of reference numerals: 1, machine body; 2, grab arm; 3, ejector rod; 31, ejector pin; 4, side plate; 41, movable plate; 42, abutment plate; 43, back plate; 44, cover plate; 5, drive assembly; 51, motor; 52, gear; 53, rack; 54, slide rail; 55, slide block; 6, oil storage tank; 61, oil pipeline; 611, oil pipeline hole; 62, placement seat; 621, placement groove; 622, clearance hole; 7, liquid Pressure assembly; 71, opening and closing hydraulic rod; 711, opening and closing pipe; 712, opening and closing valve; 713, opening and closing pump; 72, pushing hydraulic rod; 721, pushing pipe; 722, pushing valve; 723, pushing pump; 73, lifting hydraulic rod; 731, lifting pipe; 732, lifting valve; 733, lifting pump; 74, lifting seat; 8, mounting seat; 81, mounting groove; 82, limiting ring groove; 83, limiting block; 84, slot. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-7 This application is described in further detail.

[0036] The present application embodiment discloses a portable hydraulic puller device. Figure 1 and Figure 2, which includes a machine body 1, on which a group of grab arms 2 are installed along the length direction of the machine body 1, and a push rod 3 is installed between the opposite surfaces of the grab arms 2 along the length direction of the machine body 1. A group of side panels 4 are installed on the machine body 1, and the side panels 4 are vertically arranged. A movable plate 41 is horizontally arranged between the side panels 4. A driving assembly 5 is installed between the side panels 4 and the movable plate 41, and the driving assembly 5 is used to drive the movable plate 41 to move horizontally. An abutment plate 42 is installed on the machine body 1, and the abutment plate 42 is arranged opposite to the movable plate 41. An oil storage tank 6 is installed between the movable plate 41 and the abutment plate 42, and an oil pipeline 61 is connected to the oil storage tank 6. A hydraulic assembly 7 is installed on the oil pipeline 61, and the hydraulic assembly 7 is used to drive the grab arm 2 and the push rod 3 to move. When the hydraulic puller is connected to the workpiece to be disassembled, the driving assembly 5 drives the moving plate 41 to approach the abutment plate 42. In the process of the moving plate 41 approaching the abutment plate 42, the moving plate 41 and the abutment plate 42 work together to squeeze the oil storage tank 6, so that the hydraulic oil in the oil storage tank 6 enters the hydraulic assembly 7 through the oil pipe 61, and then the hydraulic assembly 7 drives the gripping arms 2 to approach each other to clamp the workpiece to be disassembled. After the hydraulic puller is connected to the workpiece to be disassembled, the driving assembly 5 drives the moving plate 41 to approach the abutment plate 42 again, so that the hydraulic assembly 7 drives the push rod 3 to approach the mechanical axis, and then the gripping arm 2 and the push rod 3 are relatively displaced, and the workpiece to be disassembled gradually falls off the mechanical axis under the interaction force between the gripping arm 2 and the push rod 3. When the workpiece to be disassembled falls off the mechanical axis, the hydraulic assembly 7 drives the gripping arms 2 to move away from each other, so that the gripping arms 2 are separated from the disassembled workpiece. In the process of using the hydraulic motor, the situation of the operator manually pressing the pressure rod back and forth is reduced, the labor intensity of the operator is reduced, and the disassembly efficiency of the workpiece is improved.

[0037] In order to achieve the effect of driving the movable plate 41 to slide, refer to Figures 1 to 3 The driving assembly 5 includes a motor 51, a gear 52, a rack 53, a slide rail 54 and a slider 55. The slide rail 54 is horizontally mounted on the opposite surface of the side plate 4, and the slider 55 is slidably arranged in the slide rail 54. The rack 53 is mounted on the slider 55, and the rack 53 and the movable plate 41 are welded to each other. The motor 51 is mounted on the opposite back surface of the side plate 4, and the output shaft of the motor 51 passes through the side plate 4. The gear 52 is welded on the output shaft of the motor 51, and the gear 52 and the rack 53 are meshed with each other. The rack 53 and the movable plate 41 are slidably connected to the side plate 4 through the slider 55. When the motor 51 is started, the output shaft of the motor 51 drives the gear 52 to rotate, and the gear 52 rotates to make the rack 53 slide along the slide rail 54, and the movement of the rack 53 drives the movable plate 41 to move.

[0038] In order to achieve the effect of driving the grab arm 2 and the top rod 3 to move, refer to Figures 1 to 6The hydraulic assembly 7 includes a group of opening and closing hydraulic rods 71 ​​and a pushing hydraulic rod 72. The opening and closing hydraulic rod 71 is installed along the width direction of the machine body 1, and the output shaft of the opening and closing hydraulic rod 71 is welded to the back of the grab arm 2. The pushing hydraulic rod 72 is installed along the length direction of the machine body 1, and the output shaft of the pushing hydraulic rod 72 is welded to one end of the push rod 3. A lifting seat 74 is installed on the top of the opening and closing hydraulic rod 71 and the top of the pushing hydraulic rod 72, and a lifting hydraulic rod 73 is installed on the top of the lifting seat 74. The lifting hydraulic rod 73 is arranged along the height direction of the machine body 1, and the lifting hydraulic rod 73 is welded to the machine body 1. When the output shaft of the opening and closing hydraulic rod 71 is extended, the grab arms 2 are close to each other; when the output shaft of the opening and closing hydraulic rod 71 is shortened, the grab arms 2 are separated from each other. When the output shaft of the pushing hydraulic rod 72 is extended, the push rod 3 is close to the mechanical axis; when the output shaft of the pushing hydraulic rod 72 is shortened, the push rod 3 is separated from the mechanical axis. When the output shaft of the lifting hydraulic rod 73 is extended, the lifting seat 74 descends, and the lifting seat 74 drives the grabbing arm 2 on the opening and closing hydraulic rod 71 and the push rod 3 on the pushing hydraulic rod 72 to descend; when the output shaft of the lifting hydraulic rod 73 is shortened, the lifting seat 74 rises, and the lifting seat 74 drives the grabbing arm 2 on the opening and closing hydraulic rod 71 and the push rod 3 on the pushing hydraulic rod 72 to rise.

[0039] refer to Figure 2 and Figure 4 An opening and closing pump 713 is installed between the output end of the opening and closing hydraulic rod 71 and the input end of the oil delivery pipe 61, an opening and closing pipe 711 is installed between the input end of the opening and closing hydraulic rod 71 and the output end of the oil delivery pipe 61, and an opening and closing valve 712 is installed on the opening and closing pipe 711. When the grab arms 2 are brought closer to each other, the oil storage tank 6 is squeezed, the opening and closing valve 712 is opened, and the opening and closing pump 713 is closed. The hydraulic oil in the oil storage tank 6 enters the opening and closing hydraulic rod 71 through the oil delivery pipe 61 through the opening and closing pipe 711. The hydraulic oil pushes the output shaft of the opening and closing hydraulic rod 71 to extend, so that the grab arms 2 are brought closer to each other. When the grab arms 2 are moved away from each other, the squeezing of the oil storage tank 6 is canceled, the opening and closing valve 712 is closed, and the opening and closing pump 713 is opened. The opening and closing pump 713 pumps the hydraulic oil in the opening and closing hydraulic rod 71 into the oil storage tank 6, so that the output shaft of the opening and closing hydraulic rod 71 drives the grab arms 2 to move away from each other.

[0040] refer to Figure 2 and Figure 5, a push pump 723 is installed between the output end of the push hydraulic rod 72 and the input end of the oil delivery pipe 61, a push pipe 721 is installed between the input end of the push hydraulic rod 72 and the output end of the oil delivery pipe 61, and a push valve 722 is installed on the push pipe 721. When the push rod 3 is brought close to the mechanical shaft, the oil storage tank 6 is squeezed, the push valve 722 is opened, and the push pump 723 is closed. The hydraulic oil in the oil storage tank 6 enters the push hydraulic rod 72 through the oil delivery pipe 61 through the push pipe 721. The hydraulic oil pushes the output shaft of the push hydraulic rod 72 to extend, so that the push rod 3 is brought close to the mechanical shaft. When the push rod 3 is moved away from the mechanical shaft, the squeezing of the oil storage tank 6 is canceled, the push valve 722 is closed, and the push pump 723 is opened. The push pump 723 pumps the hydraulic oil in the push hydraulic rod 72 into the oil storage tank 6, so that the output shaft of the push hydraulic rod 72 drives the push rod 3 away from the mechanical shaft.

[0041] refer to Figure 2 and Figure 6 A lifting pump 733 is installed between the output end of the lifting hydraulic rod 73 and the input end of the oil delivery pipe 61, a lifting pipe 731 is installed between the input end of the lifting hydraulic rod 73 and the output end of the oil delivery pipe 61, and a lifting valve 732 is installed on the lifting pipe 731. When the lifting seat 74 is moved downward, the oil storage tank 6 is squeezed, the lifting valve 732 is opened, and the lifting pump 733 is closed. The hydraulic oil in the oil storage tank 6 enters the lifting hydraulic rod 73 through the oil delivery pipe 61 through the lifting pipe 731. The hydraulic oil pushes the output shaft of the lifting hydraulic rod 73 to extend, so that the lifting seat 74 is lowered. When the lifting seat 74 moves upward, the squeezing of the oil storage tank 6 is cancelled, the lifting valve 732 is closed, and the lifting pump 733 is opened. The lifting pump 733 pumps the hydraulic oil in the lifting hydraulic rod 73 into the oil storage tank 6, so that the output shaft of the lifting hydraulic rod 73 drives the lifting seat 74 to rise.

[0042] In order to facilitate the discharge of the hydraulic oil in the oil storage tank 6, refer to Figure 2 , a placement seat 62 is installed on the side of the movable plate 41 facing the abutting plate 42, and a placement groove 621 is provided on the placement seat 62. The placement groove 621 penetrates the side wall of the placement seat 62, and the oil storage tank 6 is installed in the placement groove 621. A clearance hole 622 is provided on the abutting plate 42, and the clearance hole 622 is used for the placement seat 62 to be inserted. When the amount of oil in the oil storage tank 6 is small, the placement seat 62 moves into the clearance hole 622, so that the movable plate 41 and the abutting plate 42 squeeze the oil storage tank 6 to the maximum extent.

[0043] In order to achieve the effect of protecting the oil storage tank 6 and the drive assembly 5, refer to Figure 2, the abutment plate 42 is welded to one side of the side plate 4, and the back plate 43 is welded to the other side of the side plate 4. The back plate 43, the side plate 4 and the top of the abutment plate 42 cover the cover plate 44 together, one end of the cover plate 44 is hinged to one of the side plates 4, and the other end of the cover plate 44 is detachably connected to the other side plate 4 through a snap fastener. The back plate 43, the side plate 4, the abutment plate 42 and the cover plate 44 together form a box structure, and the back plate 43, the side plate 4, the abutment plate 42 and the cover plate 44 cover the oil storage tank 6 and the drive assembly 5 in the box structure formed together. The abutment plate 42 is provided with an oil pipe hole 611, and the oil delivery pipe 61 is inserted into the oil pipe hole 611.

[0044] In order to facilitate the installation of the ejector pin 31 on the ejector rod 3, refer to Figure 1 and Figure 7 , a mounting groove 81 is provided on the end wall of the ejector rod 3 facing one end of the mechanical shaft, a mounting seat 8 is inserted in the mounting groove 81, and an ejector pin 31 is installed on the mounting seat 8 at one end outside the mounting groove 81. A limiting ring groove 82 is provided on the inner wall of the mounting groove 81, and a plurality of limiting blocks 83 are slidably provided in the limiting ring groove 82, and the limiting blocks 83 are welded to the side wall of the mounting seat 8. A plurality of slots 84 are provided on the mounting groove 81, one end of the slots 84 is connected to the limiting ring groove 82, and the other end of the slots 84 penetrates the end wall of the ejector rod 3, and the slots 84 are provided for the limiting blocks 83 to move. When installing the ejector pin 31 on the ejector rod 3, firstly, the limiting blocks 83 on the mounting seat 8 enter the limiting ring groove 82 through the slots 84, and then the mounting seat 8 is rotated so that the limiting blocks 83 are clamped in the limiting ring groove 82, and the ejector pin 31 is installed at the end of the ejector rod 3. Then, according to the size of the mechanical shaft, an ejector pin 31 of a suitable size is selected and installed on the ejector rod 3.

[0045] The implementation principle of a portable hydraulic puller device in the embodiment of the present application is as follows: when clamping the workpiece to be disassembled, the motor 51 is started to squeeze the oil storage tank 6, the opening and closing valve 712 is opened and the opening and closing pump 713 is closed, so that the grasping arms 2 are moved closer to each other. After the grasping arm 2 clamps the workpiece to be disassembled, the motor 51 and the push valve 722 are closed. When the grasping arm 2 is separated from the workpiece to be disassembled, the opening and closing pump 713 pumps the hydraulic oil in the opening and closing hydraulic rod 71 into the oil storage tank 6, so that the output shaft of the opening and closing hydraulic rod 71 drives the grasping arms 2 away from each other, thereby separating the grasping arm 2 from the workpiece to be disassembled. When the push rod 3 is abutted against the mechanical shaft, the motor 51 is started to squeeze the oil storage tank 6, the push valve 722 is opened and the push pump 723 is closed, so that the output shaft of the push hydraulic rod 72 is extended to drive the push rod 3 to move toward the mechanical shaft. When disassembling the mechanical shaft and the bearing, firstly, the gripping arm 2 clamps the bearing and the push rod 3 faces the mechanical shaft, then the push rod 3 is driven to move toward the mechanical shaft to apply thrust to the mechanical shaft, so that the bearing and the mechanical shaft are displaced under the interaction force of the gripping arm 2 and the push rod 3, and then the bearing is gradually removed from the mechanical shaft. Therefore, in the process of using the hydraulic motor, the operator is less likely to manually press the push rod back and forth, the operator's labor intensity is reduced, and the disassembly efficiency of the workpiece is improved.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A portable hydraulic puller device, comprising a body (1), a group of grab arms (2) are arranged on the body (1), a push rod (3) is arranged between the grab arms (2), and the characteristics are: A group of side plates (4) are fixedly arranged on the machine body (1), a movable plate (41) is slidably arranged between the side plates (4), a driving assembly (5) is arranged between the side plates (4) and the movable plate (41), and the driving assembly (5) is used to drive the movable plate (41) to slide, an abutment plate (42) is fixedly arranged on the machine body (1), an oil storage tank (6) is arranged between the movable plate (41) and the abutment plate (42), an oil delivery pipe (61) is arranged in communication with the oil storage tank (6), and a hydraulic assembly (7) is arranged on the oil delivery pipe (61), and the hydraulic assembly (7) is used to drive the grab arm (2) and the push rod (3) to move.

2. A portable hydraulic puller device according to claim 1, characterized in that: The driving assembly (5) comprises a motor (51), a gear (52), a rack (53), a slide rail (54) and a slider (55); the slide rail (54) is fixedly arranged on the opposite surface of the side plate (4); the slider (55) is slidably arranged in the slide rail (54); the rack (53) is fixedly arranged on the slider (55); the rack (53) is fixedly connected to the moving plate (41); the motor (51) is fixedly arranged on the side plate (4); the gear (52) is fixedly arranged on the output shaft of the motor (51); and the gear (52) and the rack (53) are meshed with each other.

3. A portable hydraulic puller device according to claim 1, characterized in that: The hydraulic assembly (7) comprises a group of opening and closing hydraulic rods (71) and a pushing hydraulic rod (72); the output shaft of the opening and closing hydraulic rod (71) is fixedly connected to the back of the grab arm (2); the output shaft of the pushing hydraulic rod (72) is fixedly connected to the push rod (3); a lifting seat (74) is commonly provided on the opening and closing hydraulic rod (71) and the pushing hydraulic rod (72); a lifting hydraulic rod (73) is fixedly provided on the lifting seat (74); the lifting hydraulic rod (73) is fixedly connected to the machine body (1); the opening and closing hydraulic rod (71), the pushing hydraulic rod (72) and the lifting hydraulic rod (73) are all interconnected with the oil delivery pipe (61).

4. A portable hydraulic puller device according to claim 3, characterized in that: An opening and closing pipe (711) is provided between the opening and closing hydraulic rod (71) and the oil delivery pipe (61), and an opening and closing valve (712) is provided on the opening and closing pipe (711); a pushing pipe (721) is provided between the pushing hydraulic rod (72) and the oil delivery pipe (61), and a pushing valve (722) is provided on the pushing pipe (721); a lifting pipe (731) is provided between the lifting hydraulic rod (73) and the oil delivery pipe (61), and a lifting valve (732) is provided on the lifting pipe (731).

5. A portable hydraulic puller device according to claim 3, characterized in that: An opening and closing pump (713) is provided between the opening and closing hydraulic rod (71) and the oil delivery pipe (61), a pushing pump (723) is provided between the pushing hydraulic rod (72) and the oil delivery pipe (61), and a lifting pump (733) is provided between the lifting hydraulic rod (73) and the oil delivery pipe (61).

6. A portable hydraulic puller device according to claim 1, characterized in that: A placement seat (62) is fixedly arranged on one side of the movable plate (41) facing the abutment plate (42); a placement groove (621) is provided on the placement seat (62); the placement groove (621) penetrates the side wall of the placement seat (62); the oil storage tank (6) is arranged in the placement groove (621); a clearance hole (622) is provided on the abutment plate (42); the clearance hole (622) is used for the placement seat (62) to be inserted.

7. A portable hydraulic puller device according to claim 1, characterized in that: The abutment plate (42) is fixedly connected to one side of the side plate (4), and a back plate (43) is commonly provided on the other side of the side plate (4). A cover plate (44) is commonly provided on the top of the back plate (43), the side plate (4) and the abutment plate (42). One end of the cover plate (44) is hinged to one of the side plates (4), and the other end of the cover plate (44) is detachably connected to the other side plate (4). The back plate (43), the side plate (4), the abutment plate (42) and the cover plate (44) together form a box structure. An oil pipe hole (611) is provided on the abutment plate (42), and the oil delivery pipe (61) is inserted into the oil pipe hole (611).

8. The portable hydraulic puller device according to claim 1, characterized in that: The end wall of the push rod (3) is provided with a mounting groove (81), a mounting seat (8) is detachably arranged in the mounting groove (81), a push pin (31) is fixedly arranged on one end of the mounting seat (8) located outside the mounting groove (81), a limiting ring groove (82) is provided on the inner wall of the mounting groove (81), a plurality of limiting blocks (83) are slidably arranged in the limiting ring groove (82), the limiting blocks (83) are fixedly connected to the side wall of the mounting seat (8), a plurality of slots (84) are provided on the mounting groove (81), one end of the slots (84) is communicated with the limiting ring groove (82), the other end of the slots (84) penetrates the end wall of the push rod (3), and the slots (84) are used for the limiting blocks (83) to move.

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