A bend type pneumatic wrench structure suitable for narrow space

Abstract

This invention provides a bent-end pneumatic wrench structure suitable for confined spaces, relating to the field of pneumatic wrench technology. It includes: an adapter extension; a pneumatic drive unit mounted on the right side of the drive shaft; a plug-in limiting part mounted on the bent-end housing and the pneumatic drive unit, the plug-in limiting part being used to limit the connection between the drive shaft and the pneumatic drive unit; a connecting mounting part mounted below the bent-end housing; a movable support part mounted on the connecting mounting part, the connecting mounting part and the movable support part being used to support the adapter extension and the pneumatic drive unit; and an auxiliary stabilizing part mounted on the movable support part, the auxiliary stabilizing part being used to improve the stability of the movable support part. When the drive shaft rotates, the drive shaft rotates simultaneously under the action of a bevel gear, making it suitable for use in confined spaces. It solves the problem that the lack of a bent-end adapter structure in general applications leads to difficulty in using it in confined spaces, and in severe cases, can affect normal use.

Description

Technical Field

[0001] This invention belongs to the field of pneumatic wrench technology, and more specifically, relates to a bent-head pneumatic wrench structure suitable for confined spaces. Background Technology

[0002] A pneumatic wrench is a high-efficiency torque tool powered by compressed air. It converts rotational kinetic energy into impact torque through a pneumatic motor-driven gear structure, enabling the quick tightening and loosening of bolts and nuts. This tool has advantages such as safety and explosion-proof features, high power density, and strong durability. It is widely used in automotive repair, heavy equipment assembly, and other scenarios, and is a key piece of equipment for improving efficiency in industrial production.

[0003] The pneumatic wrenches currently in use still have the following problems: 1. They generally do not have an elbow-type adapter structure, which makes it difficult to use in confined spaces and may even affect normal use in severe cases; 2. When the confined space is at the bottom, workers need to exert force to hold the pneumatic wrench upwards for a long time, which increases the labor intensity of workers; 3. Pneumatic wrenches are prone to movement when tightening and loosening bolts and nuts, and cannot help increase stability. Summary of the Invention

[0004] This disclosure relates to a bent-end pneumatic wrench structure suitable for confined spaces, comprising an adapter extension, a plug-in limiting part, a connecting mounting part, a movable support part, and an auxiliary stabilizing part. When the drive shaft rotates, the drive shaft rotates simultaneously under the action of a bevel gear, making it suitable for use in confined spaces. Workers do not need to exert upward force to push the adapter extension and pneumatic drive for extended periods, reducing their labor intensity. When the adapter extension and pneumatic drive move upward under the action of two helical springs b, the auxiliary stabilizing disc automatically resets downward under the action of helical spring c, providing an auxiliary braking effect. This solves the problems of laborious use in confined spaces, the need for workers to exert force upward for extended periods when the confined space is at the bottom, and the tendency for the pneumatic wrench to move during the tightening and loosening of bolts and nuts.

[0005] This invention provides a bent-end pneumatic wrench structure suitable for confined spaces, including an adapter extension. The adapter extension includes a bent-end housing, a drive shaft, a drive shaft, and positioning magnets a. The drive shaft and drive shaft are mounted inside the bent-end housing via bearings, and are connected by two bevel gears. A row of positioning magnets a is provided, and this row is fixedly mounted inside the bent-end housing. A pneumatic drive component is mounted on the right side of the drive shaft. A plug-in limiting part is mounted on the bent-end housing and the pneumatic drive component, used to limit the connection between the drive shaft and the pneumatic drive component. A connecting mounting part is mounted below the bent-end housing. A movable support part is mounted on the connecting mounting part, used to support the adapter extension and the pneumatic drive component. An auxiliary stabilizing part is mounted on the movable support part to improve its stability.

[0006] In at least some embodiments, the insertion limiting part includes: an insertion limiting frame a, an insertion limiting frame b, and an insertion limiting pin; the insertion limiting frame a is fixedly installed on the right end of the elbow-type housing; the insertion limiting frame b is fixedly installed on the outside of the pneumatic drive component; there are two insertion limiting pins, and the two insertion limiting pins are slidably installed on the insertion limiting frame a, and the inner ends of the two insertion limiting pins are inserted into the insertion limiting frame b.

[0007] In at least some embodiments, the insertion limiting part further includes: a force-bearing ring a and a helical spring a; there are two force-bearing rings a, and the two force-bearing rings a are fixedly installed outside the two insertion limiting pins; there are two helical springs a, and the two helical springs a are sleeved outside the two insertion limiting pins, and the two helical springs a are located between the insertion limiting frame a and the two force-bearing rings a.

[0008] In at least some embodiments, the connecting mounting part includes: a circular connecting block, an irregularly shaped mounting frame, and a positioning magnet b; the circular connecting blocks are arranged in a row, and the top of the row of circular connecting blocks is inserted into the elbow-shaped housing; the irregularly shaped mounting frame is fixedly installed at the bottom end of the row of circular connecting blocks; the positioning magnet b is arranged in a row, and the row of positioning magnet b is fixedly installed inside the row of circular connecting blocks, and the row of positioning magnet b is in contact with the row of positioning magnet a.

[0009] In at least some embodiments, the connecting mounting part further includes: a rectangular mounting rod a and a linear rack a; the rectangular mounting rod a is fixedly mounted on the irregular mounting frame; the linear rack a is fixedly mounted on the rectangular mounting rod a.

[0010] In at least some embodiments, the movable support includes: a circular guide shaft, an I-shaped mounting base, and a mounting pivot; there are two circular guide shafts, and the two circular guide shafts are slidably mounted on the irregular mounting frame; the I-shaped mounting base is fixedly mounted on the bottom end of the two circular guide shafts; there are four mounting pivots, and the four mounting pivots are fixedly mounted on the front and rear sides of the I-shaped mounting base.

[0011] In at least some embodiments, the movable support further includes: support rollers, force-bearing rings b, and helical springs b; there are four support rollers in total, and the four support rollers are rotatably mounted on four mounting shafts; there are two force-bearing rings b, and the two force-bearing rings b are fixedly mounted on the top ends of two circular guide shafts, and the bottoms of the two force-bearing rings b are in contact with the irregular mounting frame; there are two helical springs b, and the two helical springs b are sleeved on the outside of the two circular guide shafts, and the two helical springs b are located between the irregular mounting frame and the I-shaped mounting base.

[0012] In at least some embodiments, the movable support further includes: an inclined mounting frame, a circular mounting rod, and a drive gear; the inclined mounting frame is fixedly mounted on the top of the I-shaped mounting base; the circular mounting rod is rotatably mounted on the inclined mounting frame; the drive gear is fixedly mounted on the outside of the circular mounting rod; when the irregularly shaped mounting frame slides down a certain distance along the two circular guide axes, the linear rack a can mesh with the drive gear.

[0013] In at least some embodiments, the auxiliary stabilizing unit includes: a rectangular guide rod, an auxiliary stabilizing disk, and an anti-slip stabilizing pad; the rectangular guide rod is slidably mounted on an I-shaped mounting base; the auxiliary stabilizing disk is fixedly mounted on the bottom end of the rectangular guide rod; and the anti-slip stabilizing pad is fixedly mounted on the bottom of the auxiliary stabilizing disk.

[0014] In at least some embodiments, the auxiliary stabilizing unit further includes: a force-bearing ring c, a helical spring c, and a linear rack b; the force-bearing ring c is fixedly installed on the outside of the rectangular guide rod, and the bottom of the force-bearing ring c contacts the I-shaped mounting base; the helical spring c is sleeved on the outside of the rectangular guide rod, and the helical spring c is located between the I-shaped mounting base and the auxiliary stabilizing disk; the linear rack b is fixedly installed on the rectangular guide rod, and the linear rack b is meshed with the drive gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In this invention, when the transmission shaft rotates, the drive shaft rotates simultaneously under the action of the bevel gear, which is suitable for use in confined spaces; when the pneumatic drive is connected to an external compressed air pipeline and the pneumatic drive is in working condition, the output shaft of the pneumatic drive drives the transmission shaft to rotate automatically. In addition, the two plug-in limit pins play a limiting role for the connected drive shaft and pneumatic drive components. The two plug-in limit pins will only move when force is applied, ensuring the limiting effect between the drive shaft and the pneumatic drive components.

[0016] 2. In this invention, the arrangement of a row of positioning magnets b and a row of positioning magnets a ensures that the row of circular connecting blocks is in a stable state after being connected to the elbow-shaped housing; it facilitates the movement of the adapter extension and pneumatic drive components by the worker using the four support rollers, making it suitable for use in narrow spaces at the bottom, so that the worker does not need to push the adapter extension and pneumatic drive components upwards for a long time, thus reducing the worker's labor intensity. In addition, when the worker presses down on the adapter extension and pneumatic drive, the irregular mounting frame can compress the two helical springs b, which helps to reduce the height; when the irregular mounting frame slides down a certain distance along the two circular guide axes, the linear rack a can mesh with the drive gear.

[0017] 3. In this invention, when the linear rack a meshes with the drive gear, and the irregular mounting frame continues to slide downwards along the two circular guide axes, the rectangular guide rod moves upwards under the action of the linear rack a, the drive gear, and the linear rack b, making the bottom of the anti-slip stabilizing pad higher than the bottom of the four supporting rollers; when the adapter extension and pneumatic drive component move to the appropriate position, and the worker stops pressing the adapter extension and pneumatic drive component, the adapter extension and pneumatic drive component move upwards under the action of the two helical springs b; when the adapter extension and pneumatic drive component move upwards under the action of the two helical springs b, the linear rack a separates from the drive gear. At this time, the auxiliary stabilizing disc automatically resets downwards under the action of the helical spring c, achieving an auxiliary braking effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 A three-dimensional structural schematic diagram of the present invention is shown; Figure 2 A schematic diagram of the structure of the adapter extension of the present invention is shown; Figure 3 A schematic diagram of the insertion limiting part of the present invention is shown; Figure 4 The present invention is shown. Figure 1 A schematic diagram of the bottom view structure; Figure 5 The present invention is shown. Figure 4A magnified schematic diagram of a portion of region A in the middle; Figure 6 A schematic diagram of the connection and mounting part of the present invention is shown; Figure 7 A schematic diagram of the irregularly shaped mounting frame and movable support part of the present invention is shown; Figure 8 A schematic diagram of the structure of the I-shaped mounting base and auxiliary stabilizing part of the present invention is shown; Figure 9 The present invention is shown. Figure 1 A schematic diagram of the structure from the perspective of the viewpoint; Figure 10 The present invention is shown. Figure 9 A magnified schematic diagram of a portion of region B.

[0021] List of reference numerals in the attached diagram: 100. Adapter extension; 101. Elbow-shaped housing; 102. Drive shaft; 103. Drive shaft; 104. Positioning magnet a; 200. Pneumatic drive components; 300. Insertion limiting part; 301. Insertion limiting frame a; 302. Insertion limiting frame b; 303. Insertion limiting pin; 304. Force-bearing ring a; 305. Helical spring a; 400. Connecting mounting part; 401. Circular connecting block; 402. Irregularly shaped mounting frame; 403. Positioning magnet b; 404. Rectangular mounting rod a; 405. Linear rack a; 500. Movable support; 501. Circular guide shaft; 502. I-shaped mounting base; 503. Mounting shaft; 504. Support roller; 505. Force-bearing ring b; 506. Helical spring b; 507. Inclined mounting bracket; 508. Circular mounting rod; 509. Drive gear; 600, Auxiliary stabilizing unit; 601, Rectangular guide rod; 602, Auxiliary stabilizing disc; 603, Anti-slip stabilizing pad; 604, Force-bearing ring c; 605, Helical spring c; 606, Linear rack b. Detailed Implementation

[0022] To make the objectives, solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0023] Example: Please refer to Figures 1 to 10As shown: This invention provides a bent-end pneumatic wrench structure suitable for confined spaces, including an adapter extension 100; a pneumatic drive 200 is mounted on the right side of a drive shaft 102; the pneumatic drive 200 mainly consists of a pneumatic motor, an impact hammering mechanism, and a torque adjustment device; a plug-in limiting part 300 is mounted on the bent-end housing 101 and the pneumatic drive 200, the plug-in limiting part 300 is used to limit the drive shaft 102 and the pneumatic drive 200 after connection; a connecting mounting part 400 is mounted below the bent-end housing 101; a movable support part 500 is mounted on the connecting mounting part 400, the connecting mounting part 400 and the movable support part 500 are used to support the adapter extension 100 and the pneumatic drive 200; an auxiliary stabilizing part 600 is mounted on the movable support part 500, the auxiliary stabilizing part 600 is used to improve the stability of the movable support part 500.

[0024] In this embodiment of the disclosure, such as Figure 2 , Figure 3 and Figure 5 As shown, the adapter extension 100 includes: a bent housing 101, a drive shaft 102, a drive shaft 103, and a positioning magnet a104; the drive shaft 102 and the drive shaft 103 are mounted inside the bent housing 101 by bearings, and the drive shaft 102 and the drive shaft 103 are connected by two bevel gears; the positioning magnet a104 is provided in a row, and the row of positioning magnets a104 is fixedly installed inside the bent housing 101.

[0025] The insertion limiting part 300 includes: an insertion limiting frame a301, an insertion limiting frame b302, and insertion limiting pins 303; the insertion limiting frame a301 is fixedly installed on the right end of the elbow-type housing 101; the insertion limiting frame b302 is fixedly installed on the outside of the pneumatic drive component 200; there are two insertion limiting pins 303, and the two insertion limiting pins 303 are slidably installed on the insertion limiting frame a301, and the inner ends of the two insertion limiting pins 303 are inserted into the insertion limiting frame b302. In 302, the insertion limiting part 300 further includes: a force-bearing ring a304 and a helical spring a305; there are two force-bearing rings a304, and the two force-bearing rings a304 are fixedly installed on the outside of the two insertion limiting pins 303; there are two helical springs a305, and the two helical springs a305 are sleeved on the outside of the two insertion limiting pins 303, and the two helical springs a305 are located between the insertion limiting frame a301 and the two force-bearing rings a304.

[0026] The specific functions of the adapter extension 100 and the insertion limiting part 300 are as follows: Since the transmission shaft 102 and the drive shaft 103 are installed inside the elbow housing 101 through bearings, and the transmission shaft 102 and the drive shaft 103 are connected by two bevel gears, when the transmission shaft 102 rotates, the drive shaft 103 rotates simultaneously under the action of the bevel gears, which is suitable for use in confined spaces; and since a pneumatic drive unit 200 is installed on the right side of the transmission shaft 102, when the pneumatic drive unit 200 is connected to an external compressed air pipeline and the pneumatic drive unit 200 is in working condition, the output shaft of the pneumatic drive unit 200 drives the transmission shaft 102 to rotate automatically. Furthermore, since the two insertion limiting pins 303 are slidably mounted on the insertion limiting frame a301, and the inner ends of the two insertion limiting pins 303 are inserted into the insertion limiting frame b302, they play a limiting role for the connected drive shaft 102 and pneumatic drive component 200. Also, since the two helical springs a305 are sleeved on the outside of the two insertion limiting pins 303, and the two helical springs a305 are located between the insertion limiting frame a301 and the two force-bearing rings a304, the two insertion limiting pins 303 will only move when force is applied, thus ensuring the limiting effect between the drive shaft 102 and the pneumatic drive component 200.

[0027] In this embodiment of the disclosure, such as Figure 6 and Figure 7 As shown, the connecting mounting part 400 includes: a circular connecting block 401, an irregularly shaped mounting frame 402, and a positioning magnet b403; the circular connecting blocks 401 are arranged in a row, and the top of the row of circular connecting blocks 401 is inserted into the elbow-shaped housing 101; the irregularly shaped mounting frame 402 is fixedly installed at the bottom end of the row of circular connecting blocks 401; the positioning magnet b403 are arranged in a row, and the row of positioning magnets b403 is fixedly installed inside the row of circular connecting blocks 401, and the row of positioning magnets b403 contacts the row of positioning magnets a104; the connecting mounting part 400 also includes: a rectangular mounting rod a404 and a straight rack a405; the rectangular mounting rod a404 is fixedly installed on the irregularly shaped mounting frame 402; the straight rack a405 is fixedly installed on the rectangular mounting rod a404.

[0028] The movable support 500 includes: two circular guide shafts 501, an I-shaped mounting base 502, and mounting pivots 503; two circular guide shafts 501 are provided, and the two circular guide shafts 501 are slidably mounted on the irregular mounting frame 402; the I-shaped mounting base 502 is fixedly mounted on the bottom end of the two circular guide shafts 501; four mounting pivots 503 are provided, and the four mounting pivots 503 are fixedly mounted on the front and rear sides of the I-shaped mounting base 502; the movable support 500 also includes: four support rollers 504, force-bearing rings b505, and helical springs b506; four support rollers 504 are provided, and the four support rollers 504 are rotatably mounted on the four mounting pivots 503; two force-bearing rings b505 are provided, and the two force-bearing rings b505 are fixedly mounted on the top end of the two circular guide shafts 501. The bottoms of the two force-bearing rings b505 contact the irregular mounting frame 402; two helical springs b506 are provided, and the two helical springs b506 are sleeved on the outside of the two circular guide shafts 501, and the two helical springs b506 are located between the irregular mounting frame 402 and the I-shaped mounting seat 502; the movable support part 500 also includes: an inclined mounting bracket 507, a circular mounting rod 508 and a drive gear 509; the inclined mounting bracket 507 is fixedly mounted on the top of the I-shaped mounting seat 502; the circular mounting rod 508 is rotatably mounted on the inclined mounting bracket 507; the drive gear 509 is fixedly mounted on the outside of the circular mounting rod 508; when the irregular mounting frame 402 slides down a certain distance along the two circular guide shafts 501, the linear rack a405 can mesh with the drive gear 509.

[0029] The specific functions of the connecting mounting part 400 and the movable support part 500 are as follows: Since the top of a row of circular connecting blocks 401 is inserted into the elbow housing 101, and a row of positioning magnets b403 is fixedly installed inside the row of circular connecting blocks 401, and the row of positioning magnets b403 is in contact with a row of positioning magnets a104, the row of circular connecting blocks 401 is in a stable state after being connected to the elbow housing 101; Since four mounting shafts 503 are fixedly installed on the front and rear sides of the I-shaped mounting base 502, and four support rollers 504 are rotatably installed on the four mounting shafts 503, it is convenient for workers to move the adapter extension part 100 and the pneumatic drive part 200 through the four support rollers 504. This is suitable for use in narrow spaces at the bottom, so that workers do not need to push the adapter extension part 100 and the pneumatic drive part 200 upwards for a long time, thus reducing the labor intensity of workers; Furthermore, since the two circular guide shafts 501 are slidably mounted on the irregular mounting frame 402, and the two helical springs b506 are sleeved on the outside of the two circular guide shafts 501, and the two helical springs b506 are located between the irregular mounting frame 402 and the I-shaped mounting base 502, when the worker presses down on the adapter extension 100 and the pneumatic drive component 200, the irregular mounting frame 402 can compress the two helical springs b506, which is beneficial for reducing the height; and since the linear rack a405 is fixedly mounted on the rectangular mounting rod a404, and the circular mounting rod 508 is rotatably mounted on the inclined mounting bracket 507, and the drive gear 509 is fixedly mounted on the outside of the circular mounting rod 508, when the irregular mounting frame 402 slides down a certain distance along the two circular guide shafts 501, the linear rack a405 can mesh with the drive gear 509.

[0030] In this embodiment of the disclosure, such as Figure 8 and Figure 10 As shown, the auxiliary stabilization unit 600 includes: a rectangular guide rod 601, an auxiliary stabilization disk 602, and an anti-slip stabilization pad 603; the rectangular guide rod 601 is slidably mounted on the I-shaped mounting base 502; the auxiliary stabilization disk 602 is fixedly mounted on the bottom end of the rectangular guide rod 601; the anti-slip stabilization pad 603 is fixedly mounted on the bottom of the auxiliary stabilization disk 602; the auxiliary stabilization unit 600 also includes: a force-bearing ring c604, a helical spring c605, and a linear rack b606; the force-bearing ring c604 is fixedly mounted on the outside of the rectangular guide rod 601, and the bottom of the force-bearing ring c604 contacts the I-shaped mounting base 502; the helical spring c605 is sleeved on the outside of the rectangular guide rod 601, and the helical spring c605 is located between the I-shaped mounting base 502 and the auxiliary stabilization disk 602; the linear rack b606 is fixedly mounted on the rectangular guide rod 601, and the linear rack b606 is meshed with the drive gear 509.

[0031] The specific function of the auxiliary stabilizing part 600 is as follows: Since the anti-slip stabilizing pad 603 is fixedly installed at the bottom of the auxiliary stabilizing disc 602, and the linear rack b606 is fixedly installed on the rectangular guide rod 601, and the linear rack b606 is meshed with the drive gear 509, when the linear rack a405 is meshed with the drive gear 509, and the irregularly shaped mounting frame 402 continues to slide downwards along the two circular guide shafts 501, the rectangular guide rod 601 moves upwards under the action of the linear rack a405, the drive gear 509, and the linear rack b606, making the bottom of the anti-slip stabilizing pad 603 higher than the bottom of the four supporting rollers 504; when the adapter extension 100 and the pneumatic drive component 20... When the adapter extension 100 and pneumatic drive 200 are moved to the appropriate position and the worker stops pressing them, the adapter extension 100 and pneumatic drive 200 move upward under the action of the two helical springs b506. Since the helical spring c605 is sleeved on the outside of the rectangular guide rod 601 and is located between the I-shaped mounting base 502 and the auxiliary stabilizing plate 602, when the adapter extension 100 and pneumatic drive 200 move upward under the action of the two helical springs b506, the linear rack a405 separates from the drive gear 509. At this time, the auxiliary stabilizing plate 602 automatically resets downward under the action of the helical spring c605, thus achieving an auxiliary braking effect.

[0032] The specific usage and function of this embodiment are as follows: In use, the two insertion limiting pins 303 are first pulled outwards, then the output end of the pneumatic drive 200 is inserted into the drive shaft 102. The angle of the pneumatic drive 200 is adjusted appropriately. Then, the two insertion limiting pins 303 are released, allowing their inner ends to insert into the insertion limiting frame b302, thus limiting the connection between the drive shaft 102 and the pneumatic drive 200. The pneumatic drive 200 is then connected to an external compressed air pipeline. The output shaft of the pneumatic drive 200 drives the drive shaft 102 to rotate automatically. When the drive shaft 102 rotates, the drive shaft 103 is engaged with the bevel gear. Under the action of rotation, it is suitable for use in confined spaces; when the confined space is at the bottom, the top of a row of circular connecting blocks 401 is inserted into the elbow housing 101, so that a row of positioning magnets b403 contacts a row of positioning magnets a104, so that the row of circular connecting blocks 401 is connected to the elbow housing 101 and is in a stable state; when the worker presses down on the adapter extension 100 and the pneumatic drive component 200, the irregular mounting frame 402 can compress the two helical springs b506, which helps to reduce the height; after the linear rack a405 is engaged with the drive gear 509, the irregular mounting frame 402 continues to rotate along the two circular... When the guide shaft 501 slides downward, the rectangular guide rod 601 moves upward under the action of the linear rack a405, the drive gear 509, and the linear rack b606, making the bottom of the anti-slip stabilizing pad 603 higher than the bottom of the four support rollers 504; when the irregular mounting frame 402 slides downward a certain distance along the two circular guide shafts 501, the linear rack a405 can mesh with the drive gear 509; then the worker moves the adapter extension 100 and the pneumatic drive 200 through the four support rollers 504, which is suitable for use in narrow spaces at the bottom, so that the worker does not need to push the adapter extension 100 and the pneumatic drive 200 upward for a long time. The pneumatic drive component 200 reduces the labor intensity of workers. When the adapter extension 100 and the pneumatic drive component 200 move to the appropriate position and the worker stops pressing the adapter extension 100 and the pneumatic drive component 200, the adapter extension 100 and the pneumatic drive component 200 move upward under the action of the two helical springs b506. When the adapter extension 100 and the pneumatic drive component 200 move upward under the action of the two helical springs b506, the linear rack a405 separates from the drive gear 509. At this time, the auxiliary stabilizing disc 602 automatically resets downward under the action of the helical spring c605, which plays an auxiliary braking role.

[0033] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0034] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A bent-end pneumatic wrench structure suitable for confined spaces, comprising an adapter extension (100); characterized in that, The adapter extension (100) includes: a bent housing (101), a transmission shaft (102), a drive shaft (103), and positioning magnets a (104); the transmission shaft (102) and the drive shaft (103) are mounted inside the bent housing (101) via bearings, and the transmission shaft (102) and the drive shaft (103) are connected by two bevel gears; the positioning magnets a (104) are arranged in a row, and a row of positioning magnets a (104) is fixedly installed inside the bent housing (101); a pneumatic drive unit (200) is installed on the right side of the transmission shaft (102); the bent housing (101) and the pneumatic drive unit (200) A plug-in limiting part (300) is installed on the drive shaft (102) and the pneumatic drive component (200) after connection; a connecting mounting part (400) is installed below the elbow-shaped housing (101); a movable support part (500) is installed on the connecting mounting part (400), and the connecting mounting part (400) and the movable support part (500) are used to support the adapter extension part (100) and the pneumatic drive component (200); an auxiliary stabilizing part (600) is installed on the movable support part (500), and the auxiliary stabilizing part (600) is used to improve the stability of the movable support part (500).

2. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 1, characterized in that, The insertion limiting part (300) includes: insertion limiting frame a (301), insertion limiting frame b (302) and insertion limiting pin (303); the insertion limiting frame a (301) is fixedly installed on the right end of the elbow housing (101); the insertion limiting frame b (302) is fixedly installed on the outside of the pneumatic drive component (200); there are two insertion limiting pins (303), and the two insertion limiting pins (303) are slidably installed on the insertion limiting frame a (301), and the inner ends of the two insertion limiting pins (303) are inserted into the insertion limiting frame b (302).

3. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 2, characterized in that, The insertion limiting part (300) further includes: a force-bearing ring a (304) and a helical spring a (305); there are two force-bearing rings a (304), and the two force-bearing rings a (304) are fixedly installed outside the two insertion limiting pins (303); there are two helical springs a (305), and the two helical springs a (305) are sleeved outside the two insertion limiting pins (303), and the two helical springs a (305) are located between the insertion limiting frame a (301) and the two force-bearing rings a (304).

4. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 1, characterized in that, The connection mounting part (400) includes: a circular connecting block (401), an irregular mounting frame (402), and a positioning magnet b (403); the circular connecting blocks (401) are arranged in a row, and the top of the row of circular connecting blocks (401) is inserted into the elbow housing (101); the irregular mounting frame (402) is fixedly installed at the bottom of the row of circular connecting blocks (401); the positioning magnet b (403) is arranged in a row, and the row of positioning magnet b (403) is fixedly installed inside the row of circular connecting blocks (401), and the row of positioning magnet b (403) is in contact with the row of positioning magnet a (104).

5. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 4, characterized in that, The connecting mounting part (400) further includes: a rectangular mounting rod a (404) and a linear rack a (405); the rectangular mounting rod a (404) is fixedly mounted on the irregular mounting frame (402); the linear rack a (405) is fixedly mounted on the rectangular mounting rod a (404).

6. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 5, characterized in that, The movable support (500) includes: a circular guide shaft (501), an I-shaped mounting base (502), and a mounting pivot (503); there are two circular guide shafts (501), and the two circular guide shafts (501) are slidably mounted on the irregular mounting frame (402); the I-shaped mounting base (502) is fixedly mounted on the bottom end of the two circular guide shafts (501); there are four mounting pivots (503), and the four mounting pivots (503) are fixedly mounted on the front and rear sides of the I-shaped mounting base (502).

7. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 6, characterized in that, The movable support (500) further includes: support rollers (504), force-bearing rings b (505), and helical springs b (506); there are four support rollers (504), and the four support rollers (504) are rotatably mounted on four mounting shafts (503); there are two force-bearing rings b (505), and the two force-bearing rings b (505) are fixedly mounted on the top of two circular guide shafts (501), and the bottom of the two force-bearing rings b (505) is in contact with the irregular mounting frame (402); there are two helical springs b (506), and the two helical springs b (506) are sleeved on the outside of the two circular guide shafts (501), and the two helical springs b (506) are located between the irregular mounting frame (402) and the I-shaped mounting base (502).

8. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 7, characterized in that, The movable support (500) further includes: an inclined mounting bracket (507), a circular mounting rod (508), and a drive gear (509); the inclined mounting bracket (507) is fixedly mounted on the top of the I-shaped mounting base (502); the circular mounting rod (508) is rotatably mounted on the inclined mounting bracket (507); the drive gear (509) is fixedly mounted on the outside of the circular mounting rod (508); when the irregularly shaped mounting frame (402) slides down a certain distance along the two circular guide shafts (501), the linear rack a (405) can mesh with the drive gear (509).

9. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 8, characterized in that, The auxiliary stabilizing unit (600) includes: a rectangular guide rod (601), an auxiliary stabilizing disk (602), and an anti-slip stabilizing pad (603); the rectangular guide rod (601) is slidably mounted on the I-shaped mounting base (502); the auxiliary stabilizing disk (602) is fixedly mounted on the bottom end of the rectangular guide rod (601); and the anti-slip stabilizing pad (603) is fixedly mounted on the bottom of the auxiliary stabilizing disk (602).

10. The elbow-type pneumatic wrench structure suitable for confined spaces according to claim 9, characterized in that, The auxiliary stabilizing unit (600) further includes: a force-bearing ring c (604), a helical spring c (605), and a linear rack b (606); the force-bearing ring c (604) is fixedly installed on the outside of the rectangular guide rod (601), and the bottom of the force-bearing ring c (604) contacts the I-shaped mounting base (502); the helical spring c (605) is sleeved on the outside of the rectangular guide rod (601), and the helical spring c (605) is located between the I-shaped mounting base (502) and the auxiliary stabilizing disk (602); the linear rack b (606) is fixedly installed on the rectangular guide rod (601), and the linear rack b (606) is meshed with the drive gear (509).

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