Pin puller

Abstract

The utility model discloses a pin puller, which belongs to the technical field of dismounting devices and comprises a support platform, a folding arm is arranged above the support platform, and the tail end of the folding arm is connected with a pin puller main body through a rotary joint; walking wheels are installed below the supporting platform. The pin puller main body comprises a barrel-shaped cylinder body, and the barrel-shaped cylinder body is connected with the rotary joint; a pin pulling connecting rod is arranged in the cylindrical cylinder body, the pin pulling connecting rod is connected with a pin pulling oil cylinder, the pin pulling oil cylinder drives the pin pulling connecting rod to move forwards and stretch out of the cylindrical cylinder body, and the pin pulling oil cylinder is pulled backwards during pin pulling to pull out a pin shaft. According to the pin puller, manual brute force pin pulling is replaced by the pin puller, the pin pulling safety coefficient is improved, and the pin puller can walk freely and is convenient and flexible to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to dismantling device technical field, in particular to a puller. BACKGROUND

[0002] Coal mine underground mining work usually needs large -scale hydraulic support. Because hydraulic support height and weight are huge, and each part needs to rely on pin shaft connection between connecting, therefore pin shaft's size and weight are also very big. When hydraulic support needs to ascend well and overhaul, need to dismantle to large -scale pin shaft. But face such huge pin shaft, manual brute force dismantling is low in efficiency, and simultaneously, may appear installation hidden danger. SUMMARY

[0003] In order to solve the above-mentioned prior art's insufficient, the utility model's purpose is to provide a puller, which replaces manual brute force and improves the safety factor of pulling out the pin, and the puller can freely walk and is convenient and flexible to use.

[0004] The utility model solves the technical scheme that its technical problem adopts:

[0005] Provide a kind of puller, including support platform, the upper of support platform is equipped with folding arm, the end of folding arm is connected with puller main body by swivel joint;

[0006] The lower of support platform is equipped with walking wheel.

[0007] Further, the puller main body includes cylindrical cylinder, the cylindrical cylinder is connected with swivel joint;

[0008] The inside of cylindrical cylinder is equipped with pin pulling link, the pin pulling link is connected with pin pulling oil cylinder, the pin pulling oil cylinder drives pin pulling link to move forward and extend from cylindrical cylinder, when pulling pin, the pin pulling oil cylinder is pulled back, and pin shaft is pulled out.

[0009] Further, the cylindrical oil cylinder includes outer slide and cylindrical inner slide, the inner slide is located in outer slide and can move forward and backward along outer slide;

[0010] The outer slide is connected with swivel joint, and the pin pulling oil cylinder is located in inner slide and is assembled with inner slide.

[0011] Further, the inner slide is driven to move forward and backward by piston cylinder.

[0012] Further, the folding arm is installed on rotary seat, and the rotary seat is rotatably connected with support platform.

[0013] Further, the support platform is loaded with hydraulic pump station.

[0014] Further, the lower part of the support platform is also provided with an oil cylinder support leg.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] 1、 the pin puller of the utility model, the pin puller main part can be driven to move up and down through the folding arm, so that the pin puller can be suitable for the pin pulling of large hydraulic support, when pulling the pin, the pulling handle installed on the pin shaft is clamped by the pin pulling connecting rod, and the pin shaft can be pulled out by pulling back the pin pulling cylinder, which can replace manual pin pulling and improve the pin pulling safety factor;

[0017] 2、 the pin puller of the utility model can be driven to move through the travelling wheel under the support platform, so that the movement of the pin puller is more convenient, in addition, the lower part of the support platform is also provided with an oil cylinder support leg, the oil cylinder support leg can increase the friction between the pin puller and the ground, and the movement of the pin puller during pin pulling is avoided;

[0018] 3、 the pin puller of the utility model can be rotated 360 degrees through the rotation of the rotary seat, and the pin puller main part can be rotated 180 degrees through the rotary joint, so that the adjustment of the direction of the pin puller main part is facilitated, and the use is more flexible;

[0019] 4、 the pin puller of the utility model, the inner slide frame of the pin puller main part can move forward and backward, so as to drive the forward and backward movement of the internal pin pulling connecting rod, so that the pin pulling connecting rod can be extended to the position of the pin shaft, and the adjustment of the distance between the pin pulling connecting rod and the pin shaft is facilitated;

[0020] 5、 the pin puller of the utility model, the support platform can be used as a platform for loading a mechanical arm, and also can be used as a platform for carrying goods, so that the pin puller can be used for carrying goods, and the practicability of the pin puller is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Other characteristics, objects and advantages of the application will become more apparent from the following detailed description of non-restrictive embodiments, made with reference to the attached drawings:

[0022] Figure 1 It is a structural schematic view of the utility model;

[0023] Figure 2 It is another perspective structural schematic view;

[0024] Figure 3 It is a top view;

[0025] Figure 4 It is an explosion view of the pin puller main part;

[0026] Figure 5 It is a sectional view of the pin puller main part.

[0027] In the diagram: 1-Support platform, 2-Folding arm, 3-Rotary joint, 4-Pin puller body, 41-Outer slide, 42-Inner slide, 43-Piston cylinder, 44-Pin puller connecting rod, 45-Pin puller cylinder, 5-Rotating seat, 6-Hydraulic pump station, 7-Traveling wheel, 8-Cylinder outrigger. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] like Figures 1-3 As shown, this embodiment provides a pin puller, including a support platform 1. A folding arm 2 is provided above the support platform 1, and the end of the folding arm 2 is connected to the pin puller body 4 via a rotary joint 3. The folding arm 2 can drive the pin puller body 4 to move up and down, making the pin puller suitable for pulling pins from large hydraulic supports. The support platform 1 is also provided with wheels 7, allowing the pin puller to move easily.

[0031] Specifically, the main body 4 of the pin puller includes a cylindrical cylinder body connected to a rotary joint 3, which allows the cylindrical cylinder body to rotate 180°. Inside the cylindrical cylinder body is a pin-pulling connecting rod 44, which is connected to a pin-pulling cylinder 45. The pin-pulling cylinder 45 drives the pin-pulling connecting rod 44 forward and extends it out of the cylindrical cylinder body. A pull handle can be fitted to the end of the pin shaft. When pulling the pin, the pin-pulling connecting rod 44 is clamped to the outside of the pull handle, and the pin-pulling cylinder 45 pulls backward, pulling out the pin shaft. The pulled-out portion of the pin shaft enters the cylindrical cylinder body.

[0032] like Figures 4-5As shown, the cylindrical oil cylinder includes an outer carriage 41 and a cylindrical inner carriage 42, which is located in the outer carriage 41 and can move forward and backward along the outer carriage 41. The outer carriage 41 is connected with the rotary joint 3, and the pin pulling oil cylinder 45 is located in the inner carriage 42 and is assembled with the inner carriage 42, and the pin pulling oil cylinder 45 is coaxially installed with the inner carriage 42. The cylindrical oil cylinder can move the inner carriage 42 forward relative to the outer carriage 41 and extend, so that the pin pulling connecting rod 44 can move forward, and the pin pulling connecting rod 44 can be extended to the position of the pin shaft, facilitating the adjustment of the distance between the pin pulling connecting rod 44 and the pin shaft. In the embodiment, the inner carriage 42 is driven to move forward and backward by the piston cylinder 43, that is, the end of the cylinder barrel of the piston cylinder 43 is fixedly connected with the outer carriage 41, and the end of the piston rod is connected with the inner carriage 42, and the inner carriage 42 is driven to move forward by the extension of the piston rod, thereby driving the pin shaft connecting rod to move forward. In addition, the piston cylinder 43 is symmetrically provided with two, so that the inner carriage 42 can move stably.

[0033] In the embodiment, the folding arm 2 is installed on the rotary seat 5, the rotary seat 5 is rotatably connected with the support platform 1, and the rotary seat 5 can rotate by 360°, thereby driving the pin puller body 4 to rotate by 360°, facilitating the adjustment of the direction of the pin puller body 4 according to the position of the pin shaft.

[0034] The joints between the folding arm 2 in the embodiment are also driven to move by the piston cylinder, and the folding arm 2 is also the prior art, which will not be repeated here. The support platform 1 is loaded with a hydraulic pump station 6 to provide hydraulic oil for each element.

[0035] The support platform 1 is also provided below with an oil cylinder support leg 8, which can move up and down. During the movement, the oil cylinder support leg 8 can be shortened so as not to affect the walking of the pin puller; after moving to the designated place, the oil cylinder support leg 8 is elongated and tightly abuts against the ground, thereby increasing the friction between the pin puller and the ground, avoiding the movement of the pin puller during use, and increasing the stability during use.

[0036] The pulling handle is installed at the center of the end of the pin shaft. During use, the piston cylinder 43 drives the inner carriage 42 and the pin pulling oil cylinder 45 to move forward, so that the cylindrical oil cylinder is close to the pin; then the pin pulling oil cylinder 45 is elongated to drive the pin pulling connecting rod 44 to move forward, and the pin pulling connecting rod 44 is elongated and sleeved outside the pulling handle, the pin pulling oil cylinder 45 is pulled backward, the pin shaft is pulled out, and part of the pin shaft enters the inner carriage 42.

[0037] The pin puller in the embodiment is suitable for use of large hydraulic supports, is convenient to move, and can be used as a platform for carrying goods, and realizes multiple purposes.

[0038] Those skilled in the art should understand that the utility model scope involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combinations of the above technical features or their equivalent features without departing from the utility model concept. For example, the technical solutions formed by mutually replacing the above features and the technical features disclosed in the present application (but not limited to) having similar functions.

Claims

1. A pin extractor characterized in that, Including support platform (1), the upper of support platform (1) is equipped with folding arm (2), the end of folding arm (2) is connected with puller body (4) through rotary joint (3); The lower of support platform (1) is installed with walking wheel (7).

2. A pin extractor according to claim 1, wherein, The puller body (4) includes cylindrical cylinder body, which is connected with rotary joint (3); The inside of cylindrical cylinder body is equipped with pull pin connecting rod (44), pull pin connecting rod (44) is connected with pull pin oil cylinder (45), pull pin oil cylinder (45) drives pull pin connecting rod (44) to move forward and stretch out from cylindrical cylinder body, when pulling pin, pull pin oil cylinder (45) is pulled back, and pin shaft is pulled out.

3. A pin extractor according to claim 2, wherein, The cylindrical oil cylinder includes outer slide (41) and cylindrical inner slide (42), the inner slide (42) is located in outer slide (41) and can move forward and backward along outer slide (41); The outer slide (41) is connected with rotary joint (3), and the pull pin oil cylinder (45) is located in the inner slide (42) and is connected with the inner slide (42).

4. A pin extractor according to claim 3, wherein The inner slide (42) is driven to move forward and backward by piston cylinder (43).

5. The pin extractor of claim 1, wherein, The folding arm (2) is installed on the rotary seat (5), and the rotary seat (5) is rotatably connected with the support platform (1).

6. The pin extractor of claim 1, wherein, The support platform (1) is loaded with hydraulic pump station (6).

7. The pin extractor of claim 1, wherein: The lower of support platform (1) is also equipped with oil cylinder support leg (8).

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