Pin puller

Abstract

The utility model provides a kind of pin pulling tool, including fixed sleeve, pull rod is equipped in fixed sleeve inside, hollow jack is also fixed in fixed sleeve side, pull rod passes through hollow jack, adjusting nut is also equipped in the side of pull rod away from fixed sleeve, adjusting nut is in close proximity in hollow jack side, by being provided with hollow jack on pin pulling tool, when pull rod and pin are connected in place and fixed sleeve is adjusted in place, hollow jack can be started to pull and prop open to drive pull rod to pull out pin, so artificial participation pin pulling is not needed, and the labor intensity of worker is reduced.

Description

Technical Field

[0001] This utility model relates to the field of special tools for disassembling positioning pins, and in particular to a pin-pulling tool. Background Technology

[0002] Pins are commonly used in mechanical manufacturing. To improve the operational accuracy of mechanical equipment, precise positioning using cylindrical or tapered pins is necessary to strictly ensure the relative positional accuracy between mechanical parts. When repairing equipment, the positioning cylindrical or tapered pins must first be removed before disassembling parts for subsequent work.

[0003] The existing pin-removing tool uses a single lever structure, which requires workers to use a lot of force to remove the pin, resulting in high labor intensity for workers. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a pin-pulling tool to solve the problem of high labor intensity for workers pulling pins.

[0005] To solve the above-mentioned technical problems, this utility model provides a pin-pulling tool, including a fixed sleeve, a pulling rod provided inside the fixed sleeve, a hollow jack fixed on one side of the fixed sleeve, the pulling rod passing through the hollow jack, and an adjusting nut provided on the side of the pulling rod away from the fixed sleeve, the adjusting nut being close to the side of the hollow jack.

[0006] In a preferred embodiment, an opening is provided on the surface of the fixed sleeve, and a lifting plate is provided above the fixed sleeve.

[0007] In the preferred embodiment, the outer side of the fixing sleeve is circular, and the inner side of the fixing sleeve is a regular polygon. An adjusting rod is also provided on the side of the fixing sleeve away from the hollow jack. The adjusting rod includes a support rod and a locking rod. The locking rod extends out of the inner side of the fixing sleeve and is fixed by a locking nut.

[0008] In the preferred embodiment, a U-shaped groove is provided on the inner side of the fixed sleeve, and the locking rod moves within the U-shaped groove.

[0009] In a preferred embodiment, a puller assembly is provided on the side of the puller rod away from the hollow jack. The puller assembly includes a mounting base connected to the puller rod, a rotary table rotatably connected to the mounting base, and multiple connecting rods set on the rotary table. During operation, the connecting rods are coaxial with the puller rod.

[0010] In the preferred embodiment, the rotary table is a regular polygon, and the rotary table and the connecting rod are detachably connected.

[0011] The beneficial effects of this utility model are: by setting a hollow jack on the pin-pulling tool, when the pulling rod and the pin are connected in place and the fixing sleeve is adjusted in place, the hollow jack can be activated to pull open and thus drive the pulling rod to pull out the pin. This eliminates the need for manual intervention in pin pulling, reducing the labor intensity of workers. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0013] Figure 1 This is an axonometric structural diagram of an embodiment of the present utility model;

[0014] Figure 2 This is a partial sectional view of a side view of an embodiment of the present invention;

[0015] Figure 3 This is a cross-sectional installation structure diagram of the fixed sleeve according to an embodiment of this utility model;

[0016] Figure 4 This is a structural diagram of the U-shaped groove inside the fixing sleeve according to an embodiment of this utility model;

[0017] Figure 5 This is a structural diagram of the head-pulling assembly according to an embodiment of this utility model.

[0018] Reference numerals: 11 fixed sleeve; 111 opening; 112 U-groove; 12 pulling rod; 13 hollow jack; 14 adjusting nut; 15 lifting plate; 16 adjusting rod; 161 support rod; 162 locking rod; 21 mounting base; 22 rotary table; 23 connecting rod; 24 locking nut. Detailed Implementation

[0019] Example 1:

[0020] Please see Figure 1-5 As shown, the present application provides a technical solution: a pin-pulling tool, including a fixed sleeve 11, a pulling rod 12 inside the fixed sleeve 11, a hollow jack 13 fixed on one side of the fixed sleeve 11, the pulling rod 12 passing through the hollow jack 13, and an adjusting nut 14 on the side of the pulling rod 12 away from the fixed sleeve 11, the adjusting nut 14 being close to the side of the hollow jack 13.

[0021] The working principle of the pin-pulling tool is as follows: one end of the pulling rod 12 is connected to the pin, which can be welded or threaded. Then, the adjusting nut 14 is rotated to move the hollow jack 13 and the fixed sleeve 11 to one side until the end of the fixed sleeve 11 near the pin touches a contact surface. Then, the hollow jack 13 is activated, which drives the adjusting nut 14 and the pulling rod 12 to move outward, thereby pulling out the pin.

[0022] The hollow jack 13 is an outsourced component; you can choose the RRH manual-electric synchronous double-acting hollow piston hydraulic jack from Jiangsu Shengli Machinery Manufacturing Co., Ltd.

[0023] In a preferred embodiment, an opening 111 is provided on the surface of the fixed sleeve 11, and a lifting plate 15 is provided above the fixed sleeve 11.

[0024] An opening 111 is provided to facilitate observation of the pin removal process, and a lifting plate 15 is provided to facilitate lifting the entire tool.

[0025] In the preferred embodiment, the outer side of the fixing sleeve 11 is circular, and the inner side of the fixing sleeve 11 is a regular polygon. An adjusting rod 16 is also provided on the side of the fixing sleeve 11 away from the hollow jack 13. The adjusting rod 16 includes a support rod 161 and a locking rod 162. The locking rod 162 extends out of the inner side of the fixing sleeve 11 and is fixed by a locking nut 24.

[0026] The purpose of making the inner side of the fixed sleeve 11 a regular polygon is to facilitate the installation of the locking nut 24.

[0027] The purpose of setting the adjusting rod 16 is that when one side of the fixed sleeve 11 contacts the outside as a support point, if the support point is uneven or only part of it is in the case, the adjusting rod 16 can be pushed out to the uneven position as a fulcrum for force, and then the position of the adjusting rod 16 can be locked with the locking nut 24.

[0028] In a preferred embodiment, a U-shaped groove 112 is provided inside the fixed sleeve 11, and the locking rod 162 moves within the U-shaped groove 112.

[0029] Example 2:

[0030] Further explanation in conjunction with Example 1;

[0031] In a preferred embodiment, a head assembly is provided on the side of the pull rod 12 away from the hollow jack 13. The head assembly includes a mounting base 21 connected to the pull rod 12, a rotary table 22 rotatably connected to the mounting base 21, and multiple connecting rods 23 arranged on the rotary table 22. During operation, the connecting rods 23 are coaxial with the pull rod 12.

[0032] The connecting rod 23 has various specifications, such as M3, M4, M6, etc. If the pin is an internal thread pin, a matching connecting rod 23 can be selected for connection.

[0033] In the preferred embodiment, the rotary table 22 is a regular polygon, and the rotary table 22 is detachably connected to the connecting rod 23.

[0034] The detachable connection can be a threaded connection.

[0035] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A pin-pulling tool, characterized in that, Includes a fixed sleeve (11), inside which is provided a lever (12), and a hollow jack (13) is fixed on one side of the fixed sleeve (11). The lever (12) passes through the hollow jack (13), and an adjusting nut (14) is provided on the side of the lever (12) away from the fixed sleeve (11). The adjusting nut (14) is close to the side of the hollow jack (13).

2. The pin-pulling tool according to claim 1, characterized in that: An opening (111) is provided on the surface of the fixed sleeve (11), and a lifting plate (15) is provided above the fixed sleeve (11).

3. A pin-pulling tool according to claim 2, characterized in that: The outer side of the fixed sleeve (11) is circular, and the inner side of the fixed sleeve (11) is a regular polygon. An adjusting rod (16) is also provided on the side of the fixed sleeve (11) away from the hollow jack (13). The adjusting rod (16) includes a support rod (161) and a locking rod (162). The locking rod (162) extends out of the inner side of the fixed sleeve (11) and is fixed by a locking nut (24).

4. A pin-pulling tool according to claim 3, characterized in that: A U-shaped groove (112) is provided inside the fixed sleeve (11), and the locking rod (162) moves in the U-shaped groove (112).

5. A pin-pulling tool according to claim 1, characterized in that: A head assembly is provided on the side of the pull rod (12) away from the hollow jack (13). The head assembly includes a mounting base (21) connected to the pull rod (12), a rotary table (22) rotatably connected to the mounting base (21), and multiple connecting rods (23) set on the rotary table (22). During operation, the connecting rods (23) are coaxial with the pull rod (12).

6. A pin-pulling tool according to claim 5, characterized in that: The rotary table (22) is a regular polygon, and the rotary table (22) and the connecting rod (23) are detachably connected.

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