Clamping and jacking device

Abstract

The utility model provides a clamping and jacking device, which comprises a clamping component, a clamping component, a clamping component, a clamping component, a clamping component, a clamping component and a clamping component, and is characterized in that a drill chuck is arranged at one end of the clamping component while a threaded rod is arranged at the other end of the clamping component; the jacking assembly comprises a nut matched with the threaded rod, a jacking cylinder and a sleeve, a supporting plate is arranged on the jacking cylinder, a penetrating hole is formed in the supporting plate, the threaded rod penetrates through the penetrating hole to be connected with the nut, and the nut is sleeved with the sleeve; after the drill chuck clamps the toggle pin, the bottom of the top cylinder abuts against at least two layers of plates, the sleeve is rotated to drive the nut to rotate on the threaded rod and move axially, and then the drill chuck and the clamped toggle pin are driven to move upwards relative to the top cylinder and the at least two layers of plates, so that the distance between the at least two layers of plates is shortened, and the machining precision is improved. And all the layers of plates are tightly attached. According to the clamping and jacking device, the technical problem that the stainless steel plate cannot be tightly attached to the equipment to be repaired in the repair welding process of the large equipment in the salt factory in the related technology is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of repair welding of salt and long equipment, in particular to a clamping and tightening device. Background Art

[0002] Large equipment in salt plants, such as evaporators, pipe boxes, and preheaters, is used for long periods of time in salt production and is prone to localized corrosion and leakage, necessitating welding repairs to these leaking areas. Conventional methods involve fitting a new cladding layer tightly against the surface of the old base layer. This involves attaching new stainless steel plates to the inner walls of large equipment like evaporators, pipe boxes, and preheaters. To ensure a tight fit between the new cladding and the old, weights and wedges are often used to support and press the new cladding around the periphery. However, the central area of the new cladding cannot be compressed tightly, leading to hollowing and bulging. This approach also fails to ensure proper operation of the repaired equipment.

[0003] Therefore, the prior art needs to be further developed. Utility Model Content

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a clamping and tightening device to solve the technical problem in the related art that during the repair welding process of large equipment in salt plants, stainless steel plates cannot fit tightly with the equipment to be repaired.

[0005] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a clamping and tightening device is provided, comprising: a clamping assembly, a drill chuck is provided at one end of the clamping assembly, the drill chuck is used to clamp a bolt passing through at least two layers of plate members, and a threaded rod is provided at the other end of the clamping assembly; a tightening assembly, the tightening assembly includes a nut, a top cylinder and a sleeve adapted for the threaded rod, a support plate is provided on the top cylinder, a through-hole is provided on the support plate, the threaded rod passes through the through-hole and is connected to the nut, and the sleeve is sleeved on the nut; when the drill chuck clamps the bolt, the bottom of the top cylinder abuts against at least two layers of plate members, the sleeve is rotated to drive the nut to rotate and move axially on the threaded rod, thereby driving the drill chuck and the clamped bolt to move upward relative to the top cylinder and at least two layers of plate members, thereby reducing the distance between at least two layers of plate members until each layer of plate members is tightly fitted.

[0006] Furthermore, the support plate divides the top cylinder into a first accommodating cavity and a second accommodating cavity. The drill chuck clamps the bolt in the first accommodating cavity, and the threaded rod passes through the support plate into the second accommodating cavity and is connected with the nut.

[0007] Furthermore, a first tenon is provided at the end of the threaded rod, and the first tenon is adapted to the mortise of the electric drill. The electric drill is driven to drive the threaded rod to rotate, thereby clamping and fixing the drill chuck to be connected to the bolt.

[0008] Furthermore, the sleeve includes a connecting portion and an accommodating portion, the connecting portion and the accommodating portion are connected, the accommodating portion is a cavity structure, and a second tenon is provided at one end of the connecting portion away from the accommodating portion. The second tenon is adapted to the mortise of the electric drill, and the electric drill is driven to drive the sleeve to rotate, thereby causing the nut to move axially along the threaded rod in the accommodating portion.

[0009] Furthermore, the connecting portion and the second tenon are both hollow structures. When the nut moves to the end of the threaded rod, the nut is located in the connecting portion and the first tenon is located in the second tenon.

[0010] Furthermore, a plurality of supporting legs are provided on the top cylinder. When the drill chuck clamps the bolt, the plurality of supporting legs are supported on at least two layers of plate members.

[0011] Furthermore, the clamping and tightening device also includes a butterfly bolt, which passes through the top tube and is connected to the drill chuck. The butterfly bolt is rotatably arranged, and the drill chuck is adjusted by rotating the butterfly bolt to clamp or release the bolt.

[0012] Furthermore, there are two butterfly bolts, which are respectively arranged on both sides of the top cylinder.

[0013] Furthermore, the clamping and tightening device also includes a fixing ring, which includes two first fixing plates and two second fixing plates. The two first fixing plates and the two second fixing plates are alternately arranged around the top tube. The top tube is located in the fixing ring, and the two first fixing plates are arranged opposite to each other and embedded in the tube wall of the top tube, so that the fixing ring is connected to the top tube, and the two butterfly bolts pass through the two second fixing plates arranged opposite to each other, thereby rotatably connecting the two butterfly bolts to the fixing ring.

[0014] Furthermore, the drill chuck is a three-jaw chuck.

[0015] Beneficial effects:

[0016] 1. The clamping and tightening device of the utility model can effectively fit the new composite layer (such as a stainless steel plate) tightly to the old base layer (such as the inner wall of an evaporation tank, a pipe box and other equipment) through the coordinated action of the clamping component and the tightening component, avoiding the hollowing and arching phenomenon that is easy to occur in the middle area of the new composite layer in traditional methods, thereby improving the repair quality.

[0017] 2. The clamping and tightening device of the utility model adopts the design of matching threaded rod and nut. By rotating the sleeve, the nut can be driven to move axially along the threaded rod, thereby tightening the stud and the new layer. The operation is simple and fast, which improves work efficiency.

[0018] 3. The butterfly bolt design of the clamping and tightening device of the present invention allows the operator to easily adjust the clamping force of the drill chuck on the bolt. At the same time, the design of the fixing ring also facilitates the fixing and positioning of the butterfly bolt to prevent the butterfly bolt from scattering. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a clamping and tightening device used in an embodiment of the present utility model from one perspective;

[0020] Figure 2 It is a structural schematic diagram of the clamping and tightening device adopted in an embodiment of the utility model from another perspective.

[0021] The above drawings include the following reference numerals:

[0022] 1. Clamping assembly; 11. Drill chuck; 12. Threaded rod; 121. First tenon; 2. Jacking assembly; 21. Nut; 22. Jack cylinder; 221. Support foot; 23. Sleeve; 231. Connecting portion; 232. Accommodating portion; 233. Second tenon; 24. Support plate; 25. Through hole; 26. First accommodating chamber; 27. Second accommodating chamber; 3. Butterfly bolt; 4. Fixing ring; 41. First fixing plate; 42. Second fixing plate. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0024] According to the embodiment of the present invention, a clamping and tightening device is provided. Figures 1 to 2, comprising: a clamping assembly 1, one end of the clamping assembly 1 is provided with a drill chuck 11, the drill chuck 11 is used to clamp a bolt passing through at least two layers of plates, and the other end of the clamping assembly 1 is provided with a threaded rod 12; a tightening assembly 2, the tightening assembly 2 includes a nut 21, a top cylinder 22 and a sleeve 23 adapted to the threaded rod 12, the top cylinder 22 is provided with a support plate 24, the support plate 24 is provided with a through hole 25, the threaded rod 12 passes through the through hole 25 and is connected to the nut 21, and the sleeve 23 is sleeved on the nut 21; when the drill chuck 11 clamps the bolt, the bottom of the top cylinder 22 abuts against at least two layers of plates, and the sleeve 23 is rotated to drive the nut 21 to rotate and move axially on the threaded rod 12, thereby driving the drill chuck 11 and the clamped bolt to move upward relative to the top cylinder 22 and at least two layers of plates, thereby reducing the distance between at least two layers of plates until each layer of plates is tightly fitted. The bolt is inserted through two or more layers of multi-layered plate to be repaired. In this embodiment, the old base layer (the equipment to be repaired) is an evaporator, and the new cladding layer is a stainless steel plate. During operation, the stainless steel plate is first used to block the leaking point of the evaporator. The bolt is then connected to the stainless steel plate and the evaporator body using the bolt. Next, the drill chuck 11 of the clamping and tightening device clamps the bolt. The bottom of the top cylinder 22 contacts the stainless steel plate. By rotating the sleeve 23, the nut 21 is driven to rotate and move axially on the threaded rod 12. Due to the threaded fit between the nut 21 and the threaded rod 12, this rotational motion is converted into axial thrust. The axial movement of the nut 21 drives the drill chuck 11 and the clamped bolt upward, thereby reducing the distance between the stainless steel plate and the evaporator body. As the distance gradually decreases, the gap between the stainless steel plate and the evaporator body is eliminated, and they are finally tightly fitted together. This clamping and tightening device solves the technical problem of stainless steel plates not being able to fit tightly to the equipment to be repaired during welding during the repair of large equipment in salt plants.

[0025] See Figure 1 In the clamping and tightening device of this embodiment, the support plate 24 separates the top cylinder 22 into a first accommodating chamber 26 and a second accommodating chamber 27. The drill chuck 11 clamps the bolt in the first accommodating chamber 26, and the threaded rod 12 passes through the support plate 24 and enters the second accommodating chamber 27 to be connected with the nut 21. Placing the drill chuck 11 in the first accommodating chamber 26 makes the operation of clamping the bolt more centralized and stable. At the same time, the threaded rod 12 passes through the support plate 24 and enters the second accommodating chamber 27 to be connected with the nut 21. Such a layout not only makes the overall structure more compact, but also reasonably utilizes the space inside the top cylinder 22, reducing the volume and weight of the device. The setting of the support plate 24 provides a stable support base for the drill chuck 11 and the threaded rod 12. During the tightening process, the drill chuck 11 can firmly clamp the bolt and realize the tightening action through the transmission of the threaded rod 12.

[0026] See Figure 1 and Figure 2In this embodiment, the clamping and tightening device has a first tenon 121 at the end of the threaded rod 12. This tenon 121 fits into the mortise of an electric drill. Driving the electric drill rotates the threaded rod 12, thereby clamping and securing the drill chuck 11 to the bolt. The powerful power of the electric drill ensures that the threaded rod 12 generates sufficient torque during rotation, thereby enhancing the drill chuck 11's grip on the bolt. Directly connecting the electric drill to the first tenon 121 of the threaded rod 12 simplifies the operation and reduces difficulty.

[0027] See Figure 2 In this embodiment of the clamping and tightening device, sleeve 23 includes a connecting portion 231 and a receiving portion 232. The connecting portion 231 and receiving portion 232 are connected. The receiving portion 232 has a hollow structure. A second tenon 233 is provided at the end of the connecting portion 231 away from the receiving portion 232. The second tenon 233 fits into the mortise of an electric drill. Driving the electric drill rotates sleeve 23, thereby causing nut 21 to move axially within receiving portion 232 along threaded rod 12. The hollow structure of receiving portion 232 provides sufficient space for nut 21 to move axially along threaded rod 12.

[0028] See Figure 2 In the clamping and tightening device of this embodiment, the connecting portion 231 and the second tenon 233 are both hollow structures. When the nut 21 moves to the end of the threaded rod 12, the nut 21 is located in the connecting portion 231, and the first tenon 121 is located in the second tenon 233. When the nut 21 moves to the end of the threaded rod 12, it can be completely accommodated in the connecting portion 231, and the first tenon 121 can also be located in the second tenon 233, thus maximizing the use of the structural space.

[0029] See Figure 1 and Figure 2 In this embodiment of the clamping and tightening device, the top cylinder 22 is provided with multiple legs 221. When the drill chuck 11 clamps the stud, the legs 221 support the at least two layers of plate members. The design of the multiple legs 221 allows the top cylinder 22 to be more stably supported on the at least two layers of plate members.

[0030] See Figure 1 and Figure 2 The clamping and tightening device of this embodiment further includes a butterfly bolt 3, which passes through a top cylinder 22 and is connected to the drill chuck 11. The butterfly bolt 3 is rotatably arranged, and the drill chuck 11 is adjusted by rotating the butterfly bolt 3, thereby clamping or releasing the stud. Rotating the butterfly bolt 3 can quickly clamp or release the drill chuck 11, allowing for quick replacement or adjustment of studs, saving time.

[0031] See Figure 1 and Figure 2In the clamping and tightening device of this embodiment, there are two butterfly bolts 3, which are respectively arranged on both sides of the top cylinder 22. The two butterfly bolts 3 are respectively located on both sides of the top cylinder 22, and the operator can operate with both hands at the same time, thereby speeding up the adjustment speed.

[0032] See Figure 1 and Figure 2 The clamping and tightening device of this embodiment further includes a fixing ring 4, which includes two first fixing plates 41 and two second fixing plates 42. The two first fixing plates 41 and the two second fixing plates 42 are arranged alternately around the top tube 22. The top tube 22 is located within the fixing ring 4. The two first fixing plates 41 are arranged opposite to each other and embedded in the wall of the top tube 22, thereby forming a connection between the fixing ring 4 and the top tube 22. The two butterfly bolts 3 pass through the two oppositely arranged second fixing plates 42, respectively, thereby rotatably connecting the two butterfly bolts 3 to the fixing ring 4. The design of the fixing ring 4 ensures that the various components of the device are tightly connected and easy to disassemble. This design facilitates maintenance and component replacement when necessary, reducing maintenance costs and difficulty.

[0033] In the clamping and tightening device of this embodiment, the drill chuck 11 is a three-jaw head. The three-jaw head design enables the drill chuck 11 to clamp the bolt more evenly, avoids the shaking or offset that may be caused by single-point clamping, and improves the precision and reliability of the tightening.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0036] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0037] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0038] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A clamping and tightening device, characterized in that: include: A clamping assembly (1), wherein one end of the clamping assembly (1) is provided with a drill chuck (11), the drill chuck (11) being used to clamp a bolt passing through at least two layers of plate members, and the other end of the clamping assembly (1) is provided with a threaded rod (12); A tightening assembly (2), the tightening assembly (2) comprising a nut (21), a top cylinder (22) and a sleeve (23) adapted to the threaded rod (12), the top cylinder (22) being provided with a support plate (24), the support plate (24) being provided with a through hole (25), the threaded rod (12) passing through the through hole (25) to be connected to the nut (21), and the sleeve (23) being sleeved on the nut (21).

2. The clamping and tightening device according to claim 1, characterized in that: The support plate (24) divides the top cylinder (22) into a first accommodating chamber (26) and a second accommodating chamber (27); the drill chuck (11) clamps the bolt in the first accommodating chamber (26); and the threaded rod (12) passes through the support plate (24) and enters the second accommodating chamber (27) to be connected to the nut (21).

3. The clamping and tightening device according to claim 1, characterized in that: The end of the threaded rod (12) is provided with a first tenon (121), and the first tenon (121) is adapted to the mortise of an electric drill.

4. The clamping and tightening device according to claim 3, characterized in that: The sleeve (23) comprises a connecting portion (231) and a receiving portion (232), wherein the connecting portion (231) and the receiving portion (232) are connected, and the receiving portion (232) is a hollow structure. A second tenon (233) is provided at one end of the connecting portion (231) away from the receiving portion (232), and the second tenon (233) is adapted to the mortise of an electric drill.

5. The clamping and tightening device according to claim 4, characterized in that: The connecting portion (231) and the second tenon (233) are both hollow structures. When the nut (21) moves to the end of the threaded rod (12), the nut (21) is located in the connecting portion (231), and the first tenon (121) is located in the second tenon (233).

6. The clamping and tightening device according to claim 1, characterized in that: A plurality of supporting legs (221) are provided on the top cylinder (22), and when the drill chuck (11) clamps the bolt, the plurality of supporting legs (221) are supported on at least two layers of plate members.

7. The clamping and tightening device according to claim 1, characterized in that: The clamping and tightening device further comprises a butterfly bolt (3), which passes through the top cylinder (22) and is connected to the drill chuck (11). The butterfly bolt (3) is rotatably arranged, and the drill chuck (11) is adjusted by rotating the butterfly bolt (3), thereby clamping or releasing the bolt.

8. The clamping and tightening device according to claim 7, characterized in that: There are two butterfly bolts (3), and the two butterfly bolts (3) are respectively arranged on both sides of the top cylinder (22).

9. The clamping and tightening device according to claim 8, characterized in that: The clamping and tightening device also includes a fixing ring (4), which includes two first fixing plates (41) and two second fixing plates (42). The two first fixing plates (41) and the two second fixing plates (42) are alternately arranged around each other. The top tube (22) is located in the fixing ring (4), and the two first fixing plates (41) are arranged opposite to each other and embedded in the tube wall of the top tube (22), so that the fixing ring (4) and the top tube (22) are connected. The two butterfly bolts (3) respectively pass through the two second fixing plates (42) arranged opposite to each other, so that the two butterfly bolts (3) are rotatably connected to the fixing ring (4).

10. The clamping and tightening device according to claim 1, characterized in that: The drill chuck (11) is a three-claw chuck.

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