Limiting device for fastening bolt
By designing a limiting device for fastening bolts including a housing, an oblique wedge expansion clamping block assembly and an adjustable length top rod, the cooperation of multiple people and the limit wrench is difficult to obtain during the tightening process of large torque bolts. The following problems achieve single-player operation and efficient tightening.
Patent Information
- Application Number
- CN202420348779.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-26
AI Technical Summary
During the tightening process of large torque bolts and nuts, multiple people usually need to cooperate, and the limit wrench is long and difficult to remove, which can easily cause injury and inefficiency.
A limiting device for fastening bolts is designed, including a housing, an oblique wedge expansion clamping block assembly and an adjustable length pin. The reciprocating sliding of the sliding pressing block is achieved through the driving assembly and the automatic rebound member. Tighten the bolt and prevent it from rotating.
This device does not require multiple people to cooperate, which is easy to use and operate, improves fastening efficiency and reduces safety risks when removing the device.
Smart Images
Figure CN222494054U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of (large torque) bolt and nut fastening, and particularly relates to a limiting device for fastening bolts. Background Art
[0002] When (large torque) bolts and nuts are tightened, the tightening torque of the threaded connection is relatively large. Generally, one operator is required to hold a wrench or a socket to limit the rotation of the bolt (or nut), and the other operator uses an air wrench or other tools to tighten the connected nut (or bolt). This process requires at least two people to cooperate; the greater the torque required by the bolt, the longer the limit wrench is in order to save effort. Therefore, after tightening, the wrench is not easy to remove, which can easily cause injuries and low efficiency. Utility Model Content
[0003] The utility model provides a limiting device for fastening bolts, which can solve the problems pointed out in the background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a shell, and limit openings are respectively provided on both sides of the shell in the length direction, and an inclined wedge-type expansion clamping block assembly is provided in the shell, and the inclined wedge-type expansion clamping block assembly includes an inclined wedge block and sliding clamping blocks located on both sides, and the sliding clamping blocks on both sides are slidably connected in the shell, and the inclined wedge block is driven by a driving assembly to drive the sliding clamping blocks on both sides to slide back and forth along the length direction of the shell, and a push rod with adjustable length is connected to one side in the length direction of the shell.
[0005] Preferably, the driving assembly comprises an adjusting bolt and an adjusting nut, wherein the adjusting bolt penetrates the thickness of the inclined wedge block and the shell in sequence from bottom to top, and an adjusting nut cooperating with the adjusting bolt is provided above the shell.
[0006] Preferably, an automatic rebound component is provided between the inclined wedge block and the upper plate of the shell, and the automatic rebound component is used to drive the inclined wedge block to return to its original position.
[0007] Preferably, the automatic rebound member is a spring.
[0008] Preferably, the sliding pressing block is slidably connected in the shell through a sliding groove.
[0009] Preferably, the push rod is a screw push rod.
[0010] Beneficial effects: The utility model provides a limit device for tightening bolts, which does not require the cooperation of multiple people and has the advantages of being easy to use, easy to operate, and highly efficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model (loose state);
[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model (clamped state);
[0013] Figure 3 It is the external structure of the utility model;
[0014] Figure 4 This is a schematic diagram of the use of the utility model Figure 1 ;
[0015] Figure 5 This is a schematic diagram of the use of the utility model Figure 2 ;
[0016] Description of reference numerals:
[0017] Reference numerals in the figure: housing 1; limit opening 11; upper plate 12; inclined wedge block 21; sliding pressing block 22; slide groove 23; adjusting bolt 31; adjusting nut 32; automatic rebound member 33; push rod 4; bolt 5; frame 6. DETAILED DESCRIPTION
[0018] A specific implementation mode of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode. Example
[0019] like Figure 1-3 As shown, a limit device for tightening bolts comprises a shell body 1, and limit openings 11 are respectively arranged on both sides of the length direction of the shell body 1, and the limit openings 11 are used to limit one of the six sides of the bolt head that needs to be assembled; an inclined wedge type expansion clamping block assembly is arranged in the shell body 1, and the inclined wedge type expansion clamping block assembly comprises an inclined wedge block 21 and sliding clamping blocks 22 located on both sides, and the sliding clamping blocks 22 on both sides are slidably connected in the shell body 1 through slide grooves 23, and the inclined wedge block 21 is driven by a driving assembly to drive the sliding clamping blocks 22 on both sides to slide back and forth along the length direction of the shell body 1, and an adjustable length push rod 4 is connected to one side in the length direction of the shell body 1. The push rod 4 is preferably a screw push rod, and one end of the inner side thereof is connected to the sliding clamping block 22 on one side through a threaded fit, and the length of the push rod 4 can be adjusted according to the on-site environment to tighten the limit device on the bolt that needs to be tightened, and push rods 4 of different lengths can also be replaced.
[0020] Specifically, the driving assembly includes an adjusting bolt 31 and an adjusting nut 32. The adjusting bolt 31 penetrates the thickness of the inclined wedge block 21 and the housing 1 from bottom to top. The housing 1 is provided with an adjusting nut 32 that cooperates with the adjusting bolt 31.
[0021] In some embodiments, an automatic rebound member 33 is provided between the inclined wedge block 21 and the upper plate 12 of the shell 1. The automatic rebound member 33 is used to drive the inclined wedge block 21 to return. The automatic rebound member 33 is a spring, and the spring can help it return smoothly.
[0022] The working principle or use method of the utility model:
[0023] Special combination Figure 4 As shown,
[0024] 1. Place the bolt 5 to be assembled at the predetermined position;
[0025] 2. The limiting opening 11 at one end of the device limits one end face of the hexagonal head of the bolt 5, and the push rod 4 at the other end is in rigid contact with the vertical surface of the frame 6 (or other fixing parts), and the length of the push rod 4 can be adjusted according to the distance;
[0026] 3. Adjust the nut 32, the inclined wedge block 21 rises, and the sliding pressing block 22 squeezes the bolt 5 head and the frame 6 (or other fixings) to both sides, so that the bolt 5 and the frame 6 (or other fixings) are rigidly fixed and cannot rotate;
[0027] 4. After fixing, tighten the nut connected to bolt 5;
[0028] 5. After the tightening is completed, loosen the adjusting nut 32 of the device, the inclined wedge block 21 descends, the sliding pressing block 22 shrinks toward the middle, and after the bolt 5 and the frame 6 (or other fixing parts) are released, remove the device;
[0029] If you need to tighten two bolts 5 that are close to each other at the same time, especially in combination with Figure 5 As shown, the push rod 4 can be removed, and the two sliding pressing blocks 22 of the device can be respectively pressed against one of the six end faces of the heads of the two bolts 5, and the two bolts 5 are fixed to each other to prevent rotation, and the operation method is the same as above.
[0030] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A limit device for tightening bolts, characterized in that: The invention comprises a shell (1), and limit openings (11) are respectively arranged on both sides of the shell (1) in the length direction. An inclined wedge-type expansion clamping block assembly is arranged in the shell (1), and the inclined wedge-type expansion clamping block assembly comprises an inclined wedge block (21) and sliding clamping blocks (22) located on both sides. The sliding clamping blocks (22) on both sides are slidably connected in the shell (1), and the inclined wedge block (21) is driven by a driving assembly to drive the sliding clamping blocks (22) on both sides to slide back and forth along the length direction of the shell (1). One side of the shell (1) in the length direction is connected to a push rod (4) with adjustable length.
2. A limit device for tightening bolts according to claim 1, characterized in that: The driving assembly comprises an adjusting bolt (31) and an adjusting nut (32), wherein the adjusting bolt (31) penetrates the thickness of the inclined wedge block (21) and the housing (1) in sequence from bottom to top, and an adjusting nut (32) cooperating therewith is provided above the housing (1).
3. A limit device for tightening bolts according to claim 2, characterized in that: An automatic rebound component (33) is provided between the inclined wedge block (21) and the upper plate (12) of the housing (1), and the automatic rebound component (33) is used to drive the inclined wedge block (21) to return to its original position.
4. A limit device for tightening bolts according to claim 3, characterized in that: The automatic rebound component (33) is a spring.
5. A limit device for tightening bolts according to claim 3, characterized in that: The sliding pressing block (22) is slidably connected in the housing (1) via a sliding groove (23).
6. A limit device for tightening bolts according to any one of claims 1 to 5, characterized in that: The push rod (4) is a screw push rod.