Hydraulic drawing device

Abstract

The utility model relates to the technical field of drawing devices, in particular to a hydraulic drawing device which comprises a base disc, a hydraulic cylinder is installed in the middle of the base disc, a hydraulic rod is movably connected to an inner cavity of the hydraulic cylinder in a sliding mode, an adjusting mechanism is installed at the upper end of the base disc, and the adjusting mechanism is connected to the outer side of the hydraulic cylinder in a sleeved mode. A drawing mechanism is mounted on the outer side of the adjusting mechanism; the adjusting mechanism comprises an external thread cylinder installed at the upper end of the base disc, and the outer side of the external thread cylinder is movably connected with a movable sleeve in a sleeved mode. According to the drawing mechanism, parts of different models and sizes are matched to be used for drawing and disassembling, the using effect is effectively improved, the parts needing to be disassembled can be conveniently clamped through the check block of the drawing mechanism and the claw hook at the lower end of the pulling claw, the situation that the parts directly fall off after being drawn, and consequently the bad safety influence is caused is avoided, and the using effect is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of puller technology, and in particular to a hydraulic puller. Background Technology

[0002] A hydraulic puller is a mechanical device that uses liquid pressure to generate pulling force. It is mainly used for disassembling and installing various connectors, bearings, gears, and other components, as well as for drawing metal materials. It typically consists of a hydraulic cylinder, a puller head, puller claws, a hydraulic pump, and piping.

[0003] Currently, the distance between the claws of hydraulic pullers on the market is usually fixed during use, which is not easy to adjust. This makes it inconvenient to pull out different models of parts after clamping. Moreover, most existing hydraulic pullers do not have protective functions, which can cause parts to fall directly after the pulling operation, posing a safety hazard. To address this issue, we provide a hydraulic puller to solve this problem. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hydraulic puller to solve this problem.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] Design a hydraulic puller, including a base plate, a hydraulic cylinder installed in the middle of the base plate, a hydraulic rod movably slidably connected to the inner cavity of the hydraulic cylinder, an adjustment mechanism installed at the upper end of the base plate, the adjustment mechanism being sleeved on the outside of the hydraulic cylinder, and a puller mechanism installed on the outside of the adjustment mechanism.

[0007] The adjusting mechanism includes an externally threaded cylinder mounted on the upper end of the base plate. A movable sleeve is movably sleeved on the outer side of the externally threaded cylinder. An upper threaded sleeve and a lower threaded sleeve are screwed onto the outer side of the externally threaded cylinder. The upper threaded sleeve and the lower threaded sleeve are located at the two ends of the movable sleeve, respectively. Three sets of first connecting members are equidistantly installed on the outer side of the movable sleeve. Each of the first connecting members is rotatably connected to a movable rod via a pin. The movable rod is movably connected to a second connecting member via a pin. A fixing block is installed at the lower end of the second connecting member. A support plate is connected to one side of the fixing block. The support plate is rotatably connected to the pulling mechanism via a connecting shaft.

[0008] Preferably, three sets of movable grooves are equidistantly arranged on the outer side of the base plate, and three fixed blocks are respectively movably arranged in the inner cavity of the three sets of movable grooves. Limiting grooves are provided on both sides of the inner cavity of the movable grooves, and limiting blocks that slide with the fixed blocks are connected to both sides of the fixed blocks.

[0009] Preferably, both ends of the movable sleeve are provided with annular grooves, and one end of the upper threaded sleeve and the lower threaded sleeve are equidistantly connected with sliding columns that slide in contact with the annular grooves.

[0010] Preferably, the pulling mechanism includes a pull claw rotatably connected to the connecting shaft, and the outer side of the pull claw is provided with a square groove, and the inner cavity of the square groove is provided with a material blocking component.

[0011] Preferably, the baffle assembly includes a fixed column installed in the inner cavity of the square channel, a movable block movably sleeved on the outer side of the fixed column, a spring being installed between the movable block and the top of the inner cavity of the square channel, and a stop block being installed on the outer side of the movable block.

[0012] Preferably, a top column is installed at the lower end of the hydraulic rod.

[0013] Preferably, a limit ring is installed on the upper outer side of the externally threaded cylinder.

[0014] The hydraulic puller proposed in this utility model has the following advantages:

[0015] 1. By adjusting the upper and lower threaded sleeves of the mechanism, the movable sleeve moves downwards, and the first connecting piece on the outer side of the movable sleeve moves downwards simultaneously. Through the pin, one end of the movable rod moves downwards, and the other end of the movable rod moves synchronously with the second connecting piece and the fixed block through the pin. This causes the fixed block to move the support plate and the pull claws in opposite directions, thereby adjusting the distance between the three pull claws of the pulling mechanism. This allows it to be used to pull and disassemble parts of different sizes, effectively improving the performance.

[0016] 2. By moving the stop block away from the lower claw hook of the pull claw, the stop block causes the movable block to compress the spring and move towards the top of the square groove cavity. This facilitates the lower claw hook of the pull claw to fit against one end of the part to be disassembled. Then, the stop block is released, and the compressed spring rebounds to its original position, causing the movable block and the stop block to move towards the lower claw hook of the pull claw. This allows the stop block to fit against the other end of the part to be disassembled. After the pulling operation is completed, the part to be disassembled is released from the machine, and the stop block and the lower claw hook of the pull claw continue to hold the part to be disassembled, preventing it from falling directly after being pulled and causing adverse safety effects, thus effectively improving the performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a hydraulic puller proposed in this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of a hydraulic puller proposed in this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the adjustment mechanism of a hydraulic puller proposed in this utility model;

[0020] Figure 4 This is a three-dimensional disassembled structural diagram of a partial adjustment mechanism of a hydraulic puller proposed in this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of a partial pulling mechanism of a hydraulic puller proposed in this utility model.

[0022] In the diagram: 1. Base plate; 2. Hydraulic cylinder; 3. Hydraulic rod; 4. Top column; 5. Adjustment mechanism; 5. External threaded cylinder; 51. Limiting ring; 52. Movable sleeve; 53. Upper threaded sleeve; 54. Lower threaded sleeve; 55. First connecting piece; 56. Movable rod; 57. Second connecting piece; 58. Fixed block; 59. Limiting block; 510. Support plate; 511. Connecting shaft; 512. Annular groove; 513. Sliding column; 514. Pulling mechanism; 6. Pull claw; 61. Square groove; 62. Fixed column; 63. Movable block; 64. Spring; 65. Stop block; 66. Moving groove; 7. Limiting groove; 8. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figure 1-5 A hydraulic puller includes a base plate 1, a hydraulic cylinder 2 installed in the middle of the base plate 1, a hydraulic rod 3 movably slidably connected to the inner cavity of the hydraulic cylinder 2, and a top column 4 installed at the lower end of the hydraulic rod 3. The top column 4 is designed to press against the machine on which the parts need to be disassembled, so as to facilitate subsequent pulling work.

[0025] An adjustment mechanism 5 is installed at the upper end of the base plate 1. The adjustment mechanism 5 is sleeved on the outside of the hydraulic cylinder 2. The adjustment mechanism 5 includes an external threaded cylinder 51 installed at the upper end of the base plate 1. A movable sleeve 53 is movably sleeved on the outside of the external threaded cylinder 51. An upper threaded sleeve 54 and a lower threaded sleeve 55 are screwed to the outside of the external threaded cylinder 51. The upper threaded sleeve 54 and the lower threaded sleeve 55 are located at the two ends of the movable sleeve 53, respectively. Three sets of first connecting parts 56 are equidistantly installed on the outside of the movable sleeve 53. Each of the first connecting parts 56 is rotatably connected to a movable rod 5 via a pin. 7. The movable rod 57 is movably connected to the second connecting piece 58 via a pin. A fixing block 59 is installed at the lower end of the second connecting piece 58. A support plate 511 is connected to one side of the fixing block 59. The support plate 511 is rotatably connected to the pulling mechanism 6 via a connecting shaft 512. Three sets of moving grooves 7 are equidistantly arranged on the outer side of the base plate 1. The three fixing blocks 59 are respectively movably arranged in the inner cavity of the three sets of moving grooves 7. Limiting grooves 8 are provided on both sides of the inner cavity of the moving grooves 7. Limiting blocks 510 that slide with the fixing blocks 59 are connected to both sides of the fixing blocks 59.

[0026] By simultaneously rotating the upper threaded sleeve 54 and the lower threaded sleeve 55 on the outer side of the external threaded cylinder 51, the upper threaded sleeve 54 and the lower threaded sleeve 55 move downward synchronously. This causes the movable sleeve 53 located between the upper threaded sleeve 54 and the lower threaded sleeve 55 to move downward along the outer side of the external threaded cylinder 51. Simultaneously, the first connecting piece 56 on the outer side of the movable sleeve 53 moves downward, and the first connecting piece 56 drives one end of the movable rod 57 downward via a pin, causing the other end of the movable rod 57 to tilt. Consequently, the other end of the movable rod 57 drives the second connecting piece 58 and the fixed block 59 to move synchronously via a pin. The fixed block 59 slides within the cavity of the limiting groove 8 through the limiting blocks 510 on both sides, thus ensuring the stability of the fixed block 59. The support plate 511 is moved away from the moving groove 7, so that the three support plates 511 respectively drive the puller claws 61 of the pulling mechanism 6 to move away from each other through the connecting shaft 512. This allows the upper threaded sleeve 54 and the lower threaded sleeve 55 to move up and down according to actual needs by rotating them in both directions, while the movable sleeve 53 located between them moves up and down. This makes it easy for the support plate 511 to drive the pulling mechanism 6 to move away from each other or closer together through the connecting shaft 512. It also makes it easy to adjust the distance between the three puller claws 61 of the pulling mechanism 6, so as to adapt to more parts of different sizes and models for pulling and disassembling, effectively improving the use effect.

[0027] A limiting ring 52 is installed on the upper outer side of the external threaded cylinder 51. The upper threaded sleeve 54 and the lower threaded sleeve 55 are limited by the designed limiting ring 52, so as to prevent the upper threaded sleeve 54 from rotating freely and detaching from the external threaded cylinder 51, which would affect the performance.

[0028] Both ends of the movable sleeve 53 are provided with annular grooves 513. One end of the upper threaded sleeve 54 and the lower threaded sleeve 55 are equidistantly connected with sliding pins 514 that slide in contact with the annular grooves 513. When the upper threaded sleeve 54 and the lower threaded sleeve 55 rotate, the sliding pins 514 at one end of the upper threaded sleeve 54 and the lower threaded sleeve 55 slide within the annular grooves 513 at both ends of the movable sleeve 53, which effectively improves the sliding fit between the movable sleeve 53 and the upper threaded sleeve 54 and the lower threaded sleeve 55.

[0029] A pulling mechanism 6 is installed on the outside of the adjusting mechanism 5. The pulling mechanism 6 includes a pull claw 61 that is rotatably connected to the connecting shaft 512. The outer side of the pull claw 61 is provided with a square groove 62. The inner cavity of the square groove 62 is provided with a baffle assembly. The baffle assembly includes a fixed post 63 installed in the inner cavity of the square groove 62. A movable block 64 is movably sleeved on the outer side of the fixed post 63. A spring 65 is installed between the movable block 64 and the top of the inner cavity of the square groove 62. A stop block 66 is installed on the outer side of the movable block 64.

[0030] During the pulling operation, the stop block 66 is moved away from the lower claw hook of the pull claw 61. The stop block 66 drives the movable block 64 to compress the spring 65 and move towards the top of the inner cavity of the square groove 62, thus facilitating the lower claw hook of the pull claw 61 to fit against one end of the part to be disassembled. Then, the stop block 66 is released, and the compressed spring 65 rebounds to its original position, thereby driving the movable block 64 and the stop block 66 to move towards the lower claw hook of the pull claw 61, so that the stop block 66 fits against the other end of the part to be disassembled. After the pulling operation is completed, the part to be disassembled is released from the machine, and the stop block 6 and the lower claw hook of the pull claw 61 keep the part to be disassembled clamped, preventing it from falling directly after being pulled and causing adverse safety effects, thus effectively improving the use effect.

[0031] Working Principle: When using this invention, depending on the size of the component to be removed, if the diameter of the component is large and the distance between the three claws 61 of the pulling mechanism 6 needs to be adjusted by adjusting mechanism 5, the upper threaded sleeve 54 and the lower threaded sleeve 55 on the outer side of the external threaded cylinder 51 are rotated simultaneously. This causes the upper threaded sleeve 54 and the lower threaded sleeve 55 to move downwards synchronously. Consequently, the movable sleeve 53 located between the upper threaded sleeve 54 and the lower threaded sleeve 55 moves downwards along with the outer side of the external threaded cylinder 51. Simultaneously, the first connecting piece 56 on the outer side of the movable sleeve 53 moves downwards, and the first connecting piece 56 is driven by a pin. One end of the movable rod 57 moves downward, causing the other end of the movable rod 57 to tilt. This, in turn, drives the second connecting piece 58 and the fixing block 59 to move synchronously via a pin. The fixing block 59 slides within the limiting groove 8 via limiting blocks 510 on both sides, thus stably driving the support plate 511 to move away from the moving groove 7. Consequently, the three support plates 511, via connecting shafts 512, drive the pull claws 61 of the pulling mechanism 6 to move in opposite directions, thereby adjusting the spacing between the three pull claws 61 of the pulling mechanism 6. Adjustment is made to adapt to the size of the parts for pulling and disassembling, effectively improving the performance. Then, the stop block 66 is moved away from the lower claw hook of the pull claw 61. The stop block 66 drives the movable block 64 to compress the spring 65 and move it towards the top of the square groove 62, facilitating the engagement of the lower claw hook of the pull claw 61 with the end of the part to be disassembled. Then, the stop block 66 is released, and the compressed spring 65 rebounds to its original position, causing the movable block 64 and the stop block 66 to move towards the lower claw hook of the pull claw 61, thus bringing the stop block 66 into contact with the end of the part to be disassembled. The other end is attached, and then hydraulic oil is delivered to the hydraulic cylinder 2 through an external hydraulic device. The hydraulic oil in the hydraulic cylinder 2 pushes out the hydraulic rod 3, so the hydraulic rod 3 drives the top column 4 to move towards the mechanical end of the part to be disassembled, thereby performing a pulling operation. This is the existing pulling operation technology, which will not be described in detail here. After the pulling operation is completed, the part to be disassembled is released from the machine, and the lower claw hook of the stop 6 and the pull claw 61 will hold the part to be disassembled, preventing it from falling directly after being pulled and causing adverse safety effects, thereby effectively improving the use effect.

[0032] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic puller, comprising a base plate (1), characterized in that, A hydraulic cylinder (2) is installed in the middle of the base plate (1). A hydraulic rod (3) is movably slidably connected to the inner cavity of the hydraulic cylinder (2). An adjustment mechanism (5) is installed at the upper end of the base plate (1). The adjustment mechanism (5) is sleeved on the outside of the hydraulic cylinder (2). A pulling mechanism (6) is installed on the outside of the adjustment mechanism (5). The adjustment mechanism (5) includes an external threaded cylinder (51) installed on the upper end of the base plate (1). A movable sleeve (53) is movably sleeved on the outer side of the external threaded cylinder (51). An upper threaded sleeve (54) and a lower threaded sleeve (55) are screwed onto the outer side of the external threaded cylinder (51). The upper threaded sleeve (54) and the lower threaded sleeve (55) are respectively located at both ends of the movable sleeve (53). Three sets of first connecting parts (56) are equidistantly installed on the outer side of the movable sleeve (53). Each of the first connecting parts (56) is rotatably connected to a movable rod (57) through a pin. The movable rod (57) is movably connected to a second connecting part (58) through a pin. A fixing block (59) is installed at the lower end of the second connecting part (58). A support plate (511) is connected to one side of the fixing block (59). The support plate (511) is rotatably connected to the pulling mechanism (6) through a connecting shaft (512).

2. The hydraulic puller according to claim 1, characterized in that, Three sets of movable grooves (7) are equidistantly arranged on the outer side of the base plate (1). The three fixed blocks (59) are respectively movably arranged in the inner cavity of the three sets of movable grooves (7). Limiting grooves (8) are provided on both sides of the inner cavity of the movable grooves (7). Limiting blocks (510) that slide with the fixed blocks (59) are connected to both sides of the fixed blocks (59).

3. A hydraulic puller according to claim 1, characterized in that, Both ends of the movable sleeve (53) are provided with annular grooves (513), and one end of the upper threaded sleeve (54) and the lower threaded sleeve (55) are equidistantly connected with sliding columns (514) that slide in contact with the annular grooves (513).

4. A hydraulic puller according to claim 1, characterized in that, The pulling mechanism (6) includes a pull claw (61) rotatably connected to the connecting shaft (512). The outer side of the pull claw (61) is provided with a square groove (62), and the inner cavity of the square groove (62) is provided with a material blocking component.

5. A hydraulic puller according to claim 4, characterized in that, The baffle assembly includes a fixed column (63) installed in the inner cavity of the square groove (62), a movable block (64) is movably sleeved on the outer side of the fixed column (63), a spring (65) is installed between the movable block (64) and the top of the inner cavity of the square groove (62), and a stop block (66) is installed on the outer side of the movable block (64).

6. A hydraulic puller according to claim 1, characterized in that, The lower end of the hydraulic rod (3) is fitted with a top column (4).

7. A hydraulic puller according to claim 1, characterized in that, A limit ring (52) is installed on the upper outer side of the external threaded cylinder (51).

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