Key taking tool

Abstract

The utility model relates to a key taking tool which comprises a support, two clamping blocks, two screw rods, a fastener, a connecting rod, an impact block and a sliding hammer. The two clamping blocks are oppositely arranged, are both located in the U-shaped space of the support and are used for clamping a key; the screws and the clamping blocks are in one-to-one correspondence and are connected, the two screws are oppositely arranged in parallel, the screws are movably arranged on the support, and the screws are used for driving the clamping blocks to move in the direction close to or away from the other clamping block; the fastener is arranged on the screw rod and is used for limiting the movement of the screw rod; one end of the connecting rod is connected with the bracket; the extending direction of the connecting rod is parallel to that of the screw rod; the impact block is connected with the other end of the connecting rod; the sliding hammer is slidably arranged on the connecting rod. According to the key taking tool, the key on the transmission shaft can be detached, time and labor are saved, and universality is achieved; operation is safe and reliable, workload of operators is reduced, and equipment maintenance efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to a key extraction tooling. Background Art

[0002] During the equipment maintenance process in the machinery industry, it is often encountered to overhaul dynamic equipment such as motors, reducers, and fans. The keys on the transmission shafts of each mating part need to be disassembled. Each disassembly of the keys brings great difficulties to the maintenance. Since many key grooves are designed in the middle of the shaft, when using tools such as hammers or chisels to strike, on the one hand, it is very difficult to disassemble due to the bad position, and on the other hand, the shaft or the key groove is extremely easy to be damaged during the striking process, affecting the running accuracy of the equipment, affecting the equipment maintenance, and the maintenance efficiency is low. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a key extraction tooling.

[0004] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0005] A key extraction tooling, comprising:

[0006] A bracket, the bracket is in a U shape;

[0007] Two clamping blocks, the two clamping blocks are arranged oppositely, both of the two clamping blocks are located in the U-shaped space of the bracket, and the two clamping blocks are used for clamping the key;

[0008] Two screw rods, the screw rods correspond to the clamping blocks one by one, the screw rods are connected with the corresponding clamping blocks, the two screw rods are opposite and parallel to each other, the screw rods are movably arranged on the bracket, and the screw rods are used for driving the clamping blocks to move towards or away from each other;

[0009] Fasteners, the fasteners are arranged on the screw rods, and the fasteners are used for restricting the movement of the screw rods;

[0010] A connecting rod, one end of the connecting rod is connected with the bracket, and the extending direction of the connecting rod is parallel to the extending direction of the screw rod;

[0011] An impact block, the impact block is connected with the other end of the connecting rod;

[0012] A sliding hammer, the sliding hammer is slidably arranged on the connecting rod.

[0013] According to some preferred embodiments of the utility model, the clamping block and the key to be disassembled are in line contact.

[0014] According to some preferred embodiments of the utility model, the clamping block and the key to be disassembled are in surface contact.

[0015] According to some preferred embodiments of the present utility model, one side of the clamping block facing the other clamping block has an arc surface that is recessed away from the other.

[0016] According to some preferred embodiments of the present utility model, the tooling further includes an adjusting rod, the adjusting rod is threadedly connected to the bracket, one end of the adjusting rod abuts against the clamping block, the adjusting rod is used to drive the clamping block to move towards the other clamping block, and the adjusting rod is perpendicular to the screw.

[0017] According to some preferred embodiments of the present utility model, a groove that is recessed away from the adjusting rod is provided on one side of the clamping block that abuts against the adjusting rod.

[0018] According to some preferred embodiments of the present utility model, the through hole on the bracket for the screw to pass through is elongated, and the extending direction of the through hole is perpendicular to the extending direction of the screw.

[0019] According to some preferred embodiments of the present utility model, the fastener is a fastening nut.

[0020] According to some preferred embodiments of the present utility model, the bracket includes a first plate and two second plates, opposite ends of the first plate are respectively connected to the two second plates, one end of the connecting rod is connected to the first plate, and the screw is movably arranged on the first plate.

[0021] According to some preferred embodiments of the present utility model, the end face of the second plate away from the first plate is an inclined surface, and the inclined surface extends obliquely outward away from the other second plate.

[0022] Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art:

[0023] The key-taking tooling provided by the present utility model can disassemble the keys on the drive shafts of dynamic equipment such as motors, reducers, and fans, which is time-saving and labor-saving. It can also disassemble accessories such as pins and has versatility; the operation is safe and reliable, reducing the workload of operators, effectively improving the equipment maintenance efficiency, and improving the equipment maintenance quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] FIG. Figure 1 is a structural diagram of the key-taking tooling provided by the present utility model from the first perspective;

[0025] FIG. Figure 2 is an enlarged view of the clamping block, screw, and bracket in FIG. Figure 1 ;

[0026] Attached Figure 3 is the structural diagram of the key-taking tooling provided by the present utility model from the second perspective;

[0027] Attached Figure 4 is the attached Figure 3 magnified view of the clamping block, screw rod, and bracket in ;

[0028] Attached Figure 5 is the structural diagram of the key-taking tooling provided by the present utility model from the third perspective;

[0029] Attached Figure 6 is the structural diagram of the clamping block, screw rod, and adjusting rod of the key-taking tooling provided by the present utility model from the first perspective;

[0030] Attached Figure 7 is the structural diagram of the clamping block, screw rod, and adjusting rod of the key-taking tooling provided by the present utility model from the second perspective;

[0031] Attached Figure 8 is the structural diagram of the clamping block, screw rod, and adjusting rod of the key-taking tooling provided by the present utility model from the third perspective;

[0032] Attached Figure 9 is the structural diagram of a structure of the clamping block of the key-taking tooling provided by the present utility model;

[0033] Attached Figure 10 is the structural diagram of the clamping block of the key-taking tooling provided by the present utility model clamping the key;

[0034] Attached Figure 11 is the structural diagram of another structure of the clamping block of the key-taking tooling provided by the present utility model;

[0035] Attached Figure 12 is the structural diagram of the bracket of the key-taking tooling provided by the present utility model;

[0036] Attached Figure 13 is the structural diagram of the transmission shaft and the key provided by the present utility model.

[0037] In the above drawings:

[0038] 1 - clamping block, 11 - first upper surface, 12 - first lower surface, 13 - first rear surface, 14 - side surface; 11' - second upper surface, 12' - second lower surface, 13' - second rear surface, 14' - left surface, 15' - right surface, 16 - groove;

[0039] 2 - screw rod; 3 - fastener; 4 - connecting rod; 5 - impact block; 6 - sliding hammer; 7 - adjusting rod;

[0040] 8 - Bracket, 81 - First plate, 811 - Through hole, 82 - Second plate, 821 - Inclined surface; 9 - Shaft; 10 - Key. Detailed implementation mode

[0041] The technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] See Figures 1 to 12 The shown key - taking tooling, the tooling includes a bracket 8, two clamping blocks 1, two screws 2, fasteners 3, a connecting rod 4, an impact block 5, a sliding hammer 6, wherein:

[0044] The bracket 8 is U - shaped. In one embodiment, the bracket 8 includes a first plate 81 and two second plates 82. The opposite ends of the first plate 81 are respectively connected to the two second plates 82. The second plates 82 are preferably perpendicular to the first plate 81, and the two second plates 82 are oppositely and parallelly arranged.

[0045] The two clamping blocks 1 are oppositely arranged, the two clamping blocks 1 are symmetrically arranged, the two clamping blocks 1 are both located in the U - shaped space of the bracket 8, and the two clamping blocks 1 are used for clamping the key 10.

[0046] The screw 2 in this example corresponds to the clamping block 1 one by one. The screw 2 is connected (threaded connection) to the corresponding clamping block 1. The two screws 2 are arranged opposite to each other and in parallel. The screw 2 is arranged on the first plate 81 of the bracket 8 (one end of the screw 2 passes through the first plate 81 into the U-shaped space of the bracket 8 and is connected to the corresponding clamping block 1). At least one screw 2 is movably arranged on the bracket 8 (that is, one screw 2 is fixedly connected to the first plate 81, and the other screw 2 is movably arranged on the first plate 81). The screw 2 is used to drive the clamping block 1 to move towards or away from the other clamping block 1. The screw 2 can be operated according to the size of the key of the object to be removed to adjust the distance between the two clamping blocks 1 to better clamp the key. Preferably, the two screws 2 in this example are both movably arranged on the bracket 8, making it more flexible to adjust the position of the clamping block 1.

[0047] The fastener 3 is arranged on the screw 2. The fastener 3 is located in the U-shaped space of the bracket 8. The fastener 3 and the screw head of the screw 2 are respectively located on opposite sides of the first plate 81 of the bracket 8, which can limit the movement of the screw 2. After determining the distance between the two clamping blocks 1 by operating the screw 2, the position of the screw 2 can be fixed by operating the fastener 3, enabling the clamping block 1 to better clamp the key. In some embodiments, the fastener 3 is a fastening nut, which is easy to operate and has a good effect on fixing the screw 2.

[0048] One end of the connecting rod 4 is connected to the first plate 81 of the bracket 8. The extending direction of the connecting rod 4 is parallel to the extending direction of the screw 2; the impact block 5 is connected to the other end of the connecting rod 4 away from the bracket 8. The impact block 5 is away from the clamping block 1; the sliding hammer 6 is slidably arranged on the connecting rod 4.

[0049] The specific implementation method of using the key-taking tooling in this example to take the key is as follows: Operate the screw 2 to adjust the distance between the two clamping blocks 1 until the two clamping blocks 1 clamp the key. Then, fix the screw 2 by operating the fastener 3 to limit its movement. Then, operate the sliding hammer 6 to move towards the impact block 5. The sliding hammer 6 and the impact block 5 generate an impact force, and the force is transmitted to the key through the connecting rod 4. After the key receives an outward impact force, it starts to withdraw until the key is completely disassembled. The operation is simple, time-saving, and labor-saving.

[0050] See Figures 9 - 11 , one side of the clamping block 1 facing the other clamping block 1 has an arc surface that extends obliquely downward away from the opposite direction. This arc surface faces the key 10 of the object to be removed to avoid the shaft 9 where the key 10 is located, preventing the shaft 9 where the key 10 is located from colliding with the clamping block 1 and protecting the shaft 9.

[0051] In some embodiments, the clamping block 1 and the key 10 are in line contact, that is, the clamping block 1 has a tip to have greater friction. See Figures 10 - 11, the clamping block 1 has a first upper surface 11, a first lower surface 12, a first front surface, a first rear surface 13, and a side surface 14. The screw 2 is connected to the first upper surface 11 of the clamping block 1. The first front surface and the first rear surface 13 are oppositely arranged (the first front surface and the first rear surface 13 are parallel). The first upper surface 11 is perpendicular to the side surface 14 (if the first upper surface 11 is horizontally arranged, the side surface 14 is vertically arranged). The first lower surface 12 is connected to the first upper surface 11, the first front surface, the first rear surface 13, and the side surface 14. The first lower surface 12 can be an arc surface. One side of the first upper surface 11 is connected to one side of the first lower surface 12 and they share an edge to form a tip. An acute angle is formed between the first upper surface 11 and the first lower surface 12, and an acute angle is formed between the side surface 14 and the first lower surface 12.

[0052] In some embodiments, the clamping block 1 and the key 10 are in surface contact. The surface of the clamping block 1 in contact with the key 10 is a vertical surface, and this surface is parallel to the surface of the key 10 to better clamp the key 10. Refer to Figure 9 , the clamping block 1 has a second upper surface 11' and a second lower surface 12' that are oppositely arranged, a second front surface and a second rear surface 13' that are oppositely arranged, and a left surface 14' and a right surface 15' that are oppositely arranged. The screw 2 is connected to the second upper surface 11' of the clamping block 1. The second front surface and the second rear surface 13' are parallel, and the left surface 14' and the right surface 15' are parallel. The second lower surface 12' is an arc surface that is recessed away from the key 10. One of the left surface 14' and the right surface 15' is in contact with the clamping block 1. The left surface 14' and the right surface 15' are parallel, and the area of one of the left surface 14' and the right surface 15' is larger than that of the other. If the left surface 14' is in contact with the key 10, the surface area of the left surface 14' is smaller than the surface area of the right surface 15'.

[0053] Refer to Figure 12 , one end of the screw 2 passes through the first plate 81 of the bracket 8 into the U-shaped space of the bracket 8 and is connected to the corresponding clamping block 1. The through hole 811 on the first plate 81 of the bracket 8 for the screw 2 to pass through is elongated. The through hole 811 penetrates the thickness direction of the first plate 81, and the extending direction of the through hole 811 is perpendicular to the extending direction of the screw 2. By operating the screw 2 to move along the length direction of the through hole 811, the gap between the two clamping blocks 1 can be adjusted to better clamp the key.

[0054] In a preferred embodiment, the tooling further includes an adjusting rod 7. The adjusting rod 7 is threadedly connected to the bracket 8. One end of the adjusting rod 7 abuts against the clamping block 1, and the other end of the adjusting rod 7 extends towards the U-shaped space away from the bracket 8. The adjusting rod 7 is used to drive the clamping block 1 to move towards the direction close to the other clamping block 1, and the adjusting rod 7 is perpendicular to the screw rod 2. The adjusting rod 7 is preferably a threaded rod, and a screw head is provided at the end of the other end of the adjusting rod 7. After operating the screw rod 2 to adjust the distance between the two clamping blocks 1, by rotating the adjusting rod 7, the adjusting rod 7 further abuts against the clamping block 1, so that the two clamping blocks 1 can better clamp the key 10, which is beneficial to the subsequent operation of the sliding hammer 6 to disengage the key 10 from the shaft 9.

[0055] See Figure 9 , a groove 16 recessed in the direction away from the adjusting rod 7 is provided on the side of the clamping block 1 that abuts against the adjusting rod 7, and the adjusting rod 7 can better and more firmly abut against the clamping block 1.

[0056] In some embodiments, the end face of the second plate 82 of the bracket 8 away from the first plate 81 is an inclined surface 821, and the inclined surface 821 extends obliquely outwards in the direction away from the other second plate 82. The end faces of the two second plates 82 away from the first plate 81 are both inclined surfaces 821, and the inclined surface 821 faces the shaft 9 where the key 10 to be disassembled is located, so as to avoid the shaft 9 where the key 10 is located, and prevent the shaft where the key 10 is located from colliding with the bracket 8 to protect the shaft 9.

[0057] The specific implementation method of taking the key with the key-taking tooling in this example is as follows: operate the screw rod 2 to adjust the distance between the two clamping blocks 1 until the two clamping blocks 1 clamp the key, then operate the fastener 3 to fix the screw rod 2 to limit its movement, and then rotate the adjusting rod 7 to make the adjusting rod 7 further abut against the clamping block 1; finally, operate the sliding hammer 6 to move towards the direction close to the impact block 5, the sliding hammer 6 and the impact block 5 generate an impact force, and the force is transmitted to the key through the connecting rod 4. After the key receives the impact force outwards, it starts to withdraw until the key is disassembled and disengaged from the shaft. The operation is simple, time-saving and labor-saving.

[0058] In this example, the bracket 8, the clamping block 1, the screw rod 2, the fastener 3, the connecting rod 4, the impact block 5 and the sliding hammer 6 are all preferably made of metal materials.

[0059] The advantages of the key-taking tooling in this example are:

[0060] 1. Solve the problem that it is difficult to disassemble the keys on the transmission shafts of dynamic equipment such as motors, reducers, and fans, and can also disassemble accessories such as pins, with versatility;

[0061] 2. The operation is safe and reliable, reducing the workload of operators, effectively improving the equipment maintenance efficiency, and improving the equipment maintenance quality.

[0062] The above embodiments are only used to illustrate the technical concept and features of the present utility model. The purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly, and it should not be used to limit the protection scope of the present utility model. Any equivalent changes or modifications made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A key-taking tooling, characterized in that, Comprising: A bracket, the bracket being U-shaped; Two clamping blocks, the two clamping blocks being arranged oppositely, both of the two clamping blocks being located within the U-shaped space of the bracket, the two clamping blocks being used for clamping the key; Two screws, the screws corresponding to the clamping blocks one by one, the screws being connected to the corresponding clamping blocks, the two screws being opposite and parallel to each other, the screws being movably arranged on the bracket, the screws being used for driving the clamping blocks to move towards or away from each other; Fasteners, the fasteners being arranged on the screws, the fasteners being used for restricting the movement of the screws; A connecting rod, one end of the connecting rod being connected to the bracket, the extending direction of the connecting rod being parallel to the extending direction of the screws; An impact block, the impact block being connected to the other end of the connecting rod; A sliding hammer, the sliding hammer being slidably arranged on the connecting rod.

2. The key-taking tooling according to claim 1, wherein, The clamping block is in line contact with the key to be disassembled.

3. The key-taking tooling according to claim 1, wherein, The clamping block is in surface contact with the key to be disassembled.

4. The key-taking tooling according to claim 1, characterized in that, One side of the clamping block facing the other clamping block has an arc surface inclined away from the opposite direction.

5. The key-taking tooling according to claim 1, characterized in that, The tooling further includes an adjusting rod, the adjusting rod being threadedly connected to the bracket, one end of the adjusting rod abutting against the clamping block, the adjusting rod being used for driving the clamping block to move towards the other clamping block, the adjusting rod being perpendicular to the screw.

6. The key-taking tooling according to claim 5, characterized in that, A groove recessed away from the adjusting rod is formed on one side of the clamping block where the adjusting rod abuts.

7. The key-taking tooling according to claim 1, characterized in that, The through hole on the bracket for the screw to pass through is elongated, and the extending direction of the through hole is perpendicular to the extending direction of the screw.

8. The key-taking tooling according to claim 1, characterized in that, The fastener is a fastening nut.

9. The key-taking tooling according to any one of claims 1 to 8, characterized in that, The bracket includes a first plate and two second plates, opposite ends of the first plate being respectively connected to the two second plates, one end of the connecting rod being connected to the first plate, and the screw being movably arranged on the first plate.

10. The key-taking tooling according to claim 9, characterized in that, The end face of the second plate away from the first plate is an inclined surface, and the inclined surface extends obliquely outwards away from the other second plate.

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