Tightening rod

Abstract

The utility model discloses a tightening rod which is applied to the field of mechanical tightening and comprises a fixing sleeve, a hollow shaft is rotatably arranged in the fixing sleeve, a sliding rod is arranged in the hollow shaft in a sliding mode, an opening is formed in the end, provided with the sliding rod, of the hollow shaft, a locking component is arranged at the opening, and a connecting assembly is installed on the locking component. Through the cooperation of the sliding rod sliding in the hollow shaft and the locking part, the rapid locking and unlocking functions of the connecting assembly are achieved, and the operation convenience and the working efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical tightening, and in particular relates to a tightening rod. Background Art

[0002] In traditional mechanical assembly, maintenance and repair operations, tightening rods are widely used as a common tool for the installation and removal of fasteners such as screws and nuts. Most traditional tightening rods have a simple structure, usually only including a fixed handle part and a rotating head that directly acts on the fastener. The operator needs to rely on manpower to complete the tightening or loosening action. Although this design is simple in structure, it has problems such as low efficiency, operator fatigue, and poor tightening consistency when faced with high torque requirements, precise tightening requirements, or frequent repetitive operations.

[0003] Especially in the field of automated production lines, precision mechanical equipment assembly and aerospace, there are extremely strict requirements for the accuracy and traceability of tightening operations. Therefore, electric tightening equipment is often used, but the tightening rods used in existing tightening equipment often lack flexible locking mechanisms. For example, the utility model patent with the authorization announcement number CN205111555U discloses an automatic tightener, including a guide block, a transmission rod, a load center shaft and a rotating shaft; the guide block is cylindrical, and a transmission screw hole is provided on one end face of the guide block, and the thread in the transmission screw hole is a reverse thread, a keyway is provided on the outer side face of the guide block, and a load thread is provided on the outer circumferential surface near the other end, and the load thread is a positive thread; the transmission rod is in the shape of a long rod, and a transmission thread is provided on the outer side face of one end, and the transmission thread is a reverse thread; a load screw hole is provided at one end of the load center shaft, and the load screw hole is a positive thread; the rotating shaft is hollow, and a keyway is provided on the surface of the hollow hole of the rotating shaft, which makes it difficult to maintain the tightening state at a specific position or conveniently adjust the tightening position, affecting the convenience and efficiency of the operation.

[0004] In view of the above problems, there is an urgent need in the market for a tightening rod technology with flexible locking and releasing functions. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a tightening rod. The utility model is achieved through the following technical solutions:

[0006] A tightening rod comprises a fixing sleeve, a hollow shaft rotatably arranged in the fixing sleeve, a sliding rod slidably arranged in the hollow shaft, an opening at one end of the hollow shaft for mounting the sliding rod, a locking component is arranged at the opening, and a connecting component is mounted on the locking component.

[0007] Preferably, a sliding permanent magnet is installed at one end of the sliding rod, and an electromagnetic component is provided on the fixed sleeve corresponding to the sliding permanent magnet, and the electromagnetic component is energized to drive the sliding permanent magnet to drive the sliding rod to slide in the hollow shaft.

[0008] Preferably, a piston cavity is provided in the fixing sleeve, one end of the sliding rod radially extends to form a piston portion extending into and cooperating with the piston cavity, and a first inlet and a second inlet are respectively provided on both sides of the piston cavity corresponding to the piston portion.

[0009] Preferably, the fixed sleeve comprises a fixed ring sleeve sleeved on the outer side of the sliding rod in the circumferential direction, the inner side of the fixed ring sleeve is divided into two piston pressurizing chambers by three annular sealing rings, and the two piston pressurizing chambers are respectively sealed and sleeved on the outer sides of the first inlet and the second inlet.

[0010] Preferably, bearings cooperating with the sliding rod are installed at the openings at both ends of the fixing ring sleeve, and the hollow shaft rotates in the fixing sleeve through the bearings.

[0011] Preferably, the locking component comprises an adsorption permanent magnet disposed at the end of the hollow shaft away from the fixing sleeve;

[0012] And / or, at least one through hole perpendicular to the axis of the hollow shaft is formed at the end of the hollow shaft away from the fixed sleeve, a magnetic sliding block is arranged in the through hole, and a reducing portion is arranged on the sliding rod corresponding to the sliding block, and the reducing portion moves toward the through hole to push the sliding block out of the through hole;

[0013] And / or, the end of the hollow shaft away from the fixing sleeve is configured as a quadrangular prism or a hexagonal prism.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The tightening rod of the utility model realizes the function of fast locking and unlocking of the connection component through the cooperation between the sliding rod sliding in the hollow shaft and the locking component, which can effectively improve the convenience of operation and work efficiency.

[0016] 2. The utility model combines an electromagnetic component to drive a sliding permanent magnet, so that the sliding rod can achieve accurate and rapid automatic sliding control in the hollow shaft, which not only reduces the tediousness of manual operation, but also improves the accuracy and automation of the tightening operation.

[0017] 3. By arranging a piston cavity in the fixed sleeve and a piston portion on the sliding rod, a pressure-driven mechanism is formed, and fluid can be injected or discharged into the piston cavity to achieve precise pushing or pulling of the sliding rod.

[0018] 4. The locking components adopt the design of adsorbing permanent magnets or with sliding blocks and reducers, as well as polygonal end shapes, which significantly enhances the reliability and diversity of the locking mechanism. The most suitable locking method can be flexibly selected according to different application scenarios, which improves the versatility and adaptability of the tightening rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the assembly of the tightening rod of the utility model;

[0020] Figure 2 This is a schematic diagram of the hollow shaft structure of the utility model;

[0021] Figure 3 This utility model Figure 2 A local enlarged schematic diagram of the middle A;

[0022] Figure 4 It is a schematic diagram of the internal structure of the fixed ring sleeve of the utility model.

[0023] In the figure: 1, fixed sleeve; 11, fixed ring sleeve; 2, hollow shaft; 21, sliding rod; 211, piston part; 212, reducing part; 22, piston chamber; 221, first inlet and outlet; 222, second inlet and outlet; 223, annular groove; 224, annular sealing ring; 23, shaft body; 24, end cover; 25, adsorption permanent magnet; 26, sliding block; 261, permanent magnetic column. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] Embodiment 1

[0026] like Figure 1 – Figure 4 As shown, this embodiment provides a tightening rod, including a fixed sleeve 1, a hollow shaft 2 is rotatably provided in the fixed sleeve 1, a sliding rod 21 is slidably provided in the hollow shaft 2, one end of the hollow shaft 2 for mounting the sliding rod 21 is open, a locking component is provided at the opening, and a connecting component is installed on the locking component.

[0027] The tightening rod cooperates with the locking component through the sliding rod 21 sliding in the hollow shaft 2, thereby realizing the rapid locking and unlocking function of the connection component, which can effectively improve the convenience of operation and work efficiency. The connection component can be a conventional sleeve or other common mechanical tools, which is a conventional technology in the art and will not be described in detail here.

[0028] The driving of the sliding rod 21 can be done by electromagnetics as a driving force. A sliding permanent magnet (not shown in the figure) is installed at one end of the sliding rod 21. An electromagnetic assembly is provided on the fixed sleeve 1 corresponding to the sliding permanent magnet. The electromagnetic assembly is energized to drive the sliding permanent magnet to drive the sliding rod 21 to slide in the hollow shaft 2. Specifically, the electromagnetic assembly is set at a position corresponding to the position where the magnetic flux lines of the sliding permanent magnet act, and the sliding rod 21 is moved by electromagnetic driving.

[0029] Combined with the electromagnetic component driving the sliding permanent magnet, the sliding rod 21 can achieve accurate and fast automatic sliding control in the hollow shaft 2, which not only reduces the tediousness of manual operation, but also improves the accuracy and automation of the tightening operation.

[0030] Preferably, another way to drive the sliding rod 21 is to set a piston cavity 22 in the fixed sleeve 1, one end of the sliding rod 21 radially extends to form a piston portion 211 that extends into the piston cavity 22 and cooperates with the piston cavity 22, and the piston cavity 22 is provided with a first inlet and outlet 221 and a second inlet and outlet 222 on both sides corresponding to the piston portion 211. By setting the piston cavity 22 in the fixed sleeve 1 and the piston portion 211 on the sliding rod 21, a pressure-driven mechanism is formed, and gas can be injected into the piston cavity 22 through the first inlet and outlet 221, and gas can be discharged from the second inlet and outlet 222, so that the sliding rod 21 extends, and gas can be injected into the piston cavity 22 through the second inlet and outlet 222, and gas can be discharged from the first inlet and outlet 221, so that the sliding rod 21 is pulled back to its original position, so as to achieve precise pushing or pulling of the sliding rod 21.

[0031] The fixed sleeve 1 includes a fixed ring sleeve 11 which is sleeved on the outer side of the sliding rod 21 in the circumferential direction. The fixed ring sleeve 11 has three annular grooves 223. The three annular grooves 223 are arranged in parallel and are spaced a certain distance apart from each other. An annular sealing ring 224 is installed in the annular groove 223. The inner side of the fixed ring sleeve is divided by the three annular sealing rings 224 to form two piston pressurizing chambers. The two piston pressurizing chambers are respectively sealed and sleeved on the outer sides of the first inlet and outlet 221 and the second inlet and outlet 222.

[0032] Further preferably, the hollow shaft 2 includes a shaft body 23 and an end cover portion 24, the locking component is arranged on the end cover portion 24, the end cover portion 24 is hollow, the sliding rod 21 passes through the end cover portion 24 and is inserted into the locking component, the end cover portion 24 is inserted into the shaft body 23 of the hollow shaft 2, and a mounting step is formed inside the shaft body 23, a sliding rod 21 reset spring (not shown in the figure) is arranged on the outside of the sliding rod 21, the main body of the sliding rod 21 is inserted into the sliding rod 21 reset spring, one end of the sliding rod 21 reset spring abuts against the piston portion 211, and the other end is clamped on the mounting step formed by the shaft body 23 and the end cover portion 24.

[0033] The openings at both ends of the fixed ring sleeve 11 are equipped with bearings that match the sliding rod 21, and the hollow shaft 2 rotates in the fixed sleeve 1 through the bearings. The bearing structures installed at the openings at both ends support the rotation of the hollow shaft 2, reduce friction loss, and improve rotation stability, so that the tightening rod can still maintain good mechanical properties and durability under long-term work.

[0034] Preferably, the locking component comprises an adsorption permanent magnet 25 disposed at the end of the hollow shaft 2 away from the fixing sleeve 1, for adsorbing components, such as bolts or sleeves.

[0035] Embodiment 2

[0036] On the basis of the first embodiment, the end of the hollow shaft 2 of this embodiment away from the fixed sleeve 1 is provided with at least one through hole perpendicular to the axis of the hollow shaft 2, and a magnetic sliding block 26 is provided in the through hole, and the sliding rod 21 is provided with a reducing portion 212 corresponding to the sliding block 26, the sliding rod 21 is cylindrical, and the reducing portion 212 is frustum-shaped, and the reducing portion 212 moves toward the through hole to push the sliding block 26 out of the through hole, and the sliding block 26 presses against the inner wall of the contact component or is inserted into the matching pin hole to achieve locking.

[0037] Furthermore, a permanent magnet column 261 can be set in the middle of the side of the sliding block 26 close to the reducing portion 212. The permanent magnet column 261 is always adsorbed on the sliding rod 21, and as the reducing portion 212 moves, it pushes the sliding block 26 to move. Furthermore, the permanent magnet column 261 does not directly contact the sliding rod 21, and the sliding rod 21 is magnetically attracted after being covered by the sliding block 26, thereby preventing the permanent magnet column 261 from directly contacting the sliding rod 21, which may cause damage to the permanent magnet column 261 during use.

[0038] Alternatively, the sliding block 26 may be magnetized as a whole so as to be adsorbed on the sliding rod 21 .

[0039] Alternatively, a permanent magnetic ball is provided between the sliding block 26 and the sliding rod 21 , and the permanent magnetic ball is coated with wear-resistant material. The permanent magnetic ball absorbs the sliding block 26 and the sliding rod 21 respectively, and rolls on the diameter-changing portion 212 to push the sliding block 26 .

[0040] And / or, the end of the hollow shaft 2 away from the fixing sleeve 1 is configured as a quadrangular prism or a hexagonal prism for cooperating with the mounting portion 41 of the inserted bolt or sleeve. Further preferably, at least one through hole with a sliding block 26 is provided on the prism surface of the quadrangular prism or the hexagonal prism.

Claims

1. A tightening rod, comprising a fixing sleeve (1), characterized in that: A hollow shaft (2) is rotatably arranged in the fixed sleeve (1), a sliding rod (21) is slidably arranged in the hollow shaft (2), one end of the hollow shaft (2) on which the sliding rod (21) is mounted is open, a locking component is arranged at the opening, and a connecting component is mounted on the locking component.

2. A tightening rod according to claim 1, characterized in that: A sliding permanent magnet is installed at one end of the sliding rod (21), and an electromagnetic component is provided on the fixed sleeve (1) corresponding to the sliding permanent magnet. The electromagnetic component is energized to drive the sliding permanent magnet to drive the sliding rod (21) to slide inside the hollow shaft (2).

3. A tightening rod according to claim 1, characterized in that: A piston cavity (22) is provided in the fixed sleeve (1), one end of the sliding rod (21) radially extends to form a piston portion (211) extending into the piston cavity (22) and cooperating with the piston cavity (22), and a first inlet and outlet (221) and a second inlet and outlet (222) are respectively provided on two sides of the piston cavity (22) corresponding to the piston portion (211).

4. A tightening rod according to claim 3, characterized in that: The fixed sleeve (1) comprises a fixed ring sleeve (11) sleeved on the outer side of the sliding rod (21) in the circumferential direction, and the inner side of the fixed ring sleeve (11) is divided into two piston pressurizing chambers by three annular sealing rings (224), and the two piston pressurizing chambers are respectively sealed and sleeved on the outer sides of the first inlet and outlet (221) and the second inlet and outlet (222).

5. A tightening rod according to claim 4, characterized in that: Bearings that match the sliding rod (21) are installed at the openings at both ends of the fixed ring sleeve (11), and the hollow shaft (2) rotates in the fixed sleeve (1) through the bearings.

6. A tightening rod according to claim 1, characterized in that: The locking component comprises an adsorption permanent magnet (25) arranged at the end of the hollow shaft (2) away from the fixing sleeve (1); And / or, at least one through hole perpendicular to the axis of the hollow shaft (2) is formed at the end of the hollow shaft (2) away from the fixed sleeve (1), a magnetic sliding block (26) is provided in the through hole, and the sliding rod (21) is provided with a diameter reducing portion (212) corresponding to the sliding block (26), and the diameter reducing portion (212) moves toward the through hole to push the sliding block (26) out of the through hole; And / or, the end of the hollow shaft (2) away from the fixing sleeve (1) is configured as a quadrangular prism or a hexagonal prism.

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