Torque-increasing sleeve adapter

Abstract

The utility model discloses a sleeve connecting rod of increasing torque, including the torsional gain casing, the torsional gain casing is assembled from two half casing and is the torsional gain cavity of hollow inside, the inside of torsional gain casing is equipped with a plurality of torsional gain subassembly, every torsional gain subassembly is with torsional gain casing transmission cooperation is formed, and all torsional gain subassembly is added to the torque of torsional gain casing and is offset, the torsional gain subassembly of one side of the input end close can detachably install the input joint, and the input joint exposes from the one end of torsional gain casing and forms transmission with corresponding torsional gain subassembly, the output sleeve rod of telescopic is equipped on the torsional gain subassembly of one side of the output end close, and the output joint is detachably equipped on the end of output sleeve rod and passes through torsional gain casing, and the output joint forms transmission with torsional gain subassembly through output sleeve rod, and the reaction force of torsional gain casing is offset through the torsional gain subassembly of self, and the structure is simplified, and the cost is reduced while increasing stability, and the length of output sleeve rod is adjustable, and the input and output joint can detachably, and the applicability is improved.

Description

Technical Field

[0001] This utility model relates to the field of torque-increasing repair tools, and in particular to a sleeve extension rod that can increase torque. Background Technology

[0002] Large-scale ground engineering equipment and large-scale underground mining equipment use large-size, high-strength bolts and high-torque fastening at the connection points of components to consider operational capacity and safety protection. However, in later use and maintenance, it is not possible to completely follow the steps of disassembly from small to large, from top to bottom, and from light to heavy. Generally, after implementing safety measures, damaged components are disassembled and repaired. However, there are great difficulties and safety risks in disassembling and fastening large-size components with high-strength and high-torque bolts.

[0003] Existing torque extenders, such as the "Electric Torque Wrench" in patent application CN109551413B, have the following problems:

[0004] 1. The device usually requires an additional point of force or an external drive device to counteract the reaction force of the torque amplification component on the device. This results in a more complex structure and larger size, making it less suitable for narrow places. In addition, the introduction of an external drive device may affect the stability of the entire torque amplification process.

[0005] 2. The output end of the device may be detachable, but the input end is usually fixed and difficult to replace or substitute according to the actual operation. The overall length is generally fixed, resulting in poor applicability. Utility Model Content

[0006] This invention provides a sleeve extension rod that can increase torque, aiming to solve the problems of existing torque-increasing wrenches, such as poor stability due to the need for external components to counteract the reaction force, inconvenient disassembly, and poor applicability due to the fixed length.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A sleeve connecting rod capable of increasing torque includes a torque-increasing housing, which is assembled from two half-housings and has a hollow torque-increasing cavity inside. The torque-increasing housing is provided with several torque-increasing components inside, each of which forms a transmission engagement with the torque-increasing housing, and the torques of all the torque-increasing components on the torque-increasing housing are superimposed and canceled out.

[0009] An input connector is detachably installed in the torque amplification assembly near the input end. The input connector protrudes from one end of the torque amplification housing and forms a transmission with the corresponding torque amplification assembly.

[0010] The torque amplification component near the output end is provided with a telescopic output sleeve. The end of the output sleeve is detachably provided with an output connector through the torque amplification housing. The output connector forms a transmission with the torque amplification component through the output sleeve.

[0011] Preferably, the torque amplification components are at least three groups, namely a first-stage torque amplification component, a second-stage torque amplification component, and a third-stage torque amplification component from the input end to the output end. The first-stage torque amplification component applies a torque of T1 to the torque amplification housing, the second-stage torque amplification component applies a torque of T2 to the torque amplification housing, and the third-stage torque amplification component applies a torque of T3 to the torque amplification housing, where T1+T2+T3=0.

[0012] More preferably, the first-stage torque-increasing assembly includes a first-stage planetary carrier. A first-stage sun gear is coaxially mounted at the middle position of the first-stage planetary carrier near the input end. The first-stage sun gear is coaxially engaged with the input connector near the input end and rotates synchronously. Several first-stage planetary gear sets are equidistantly mounted around the first-stage sun gear on the first-stage planetary carrier near the input end. The first-stage planetary gear sets mesh with the first-stage sun gear on the side near the first-stage sun gear, and the first-stage planetary gear sets mesh with the first-stage peripheral gear ring arranged on the inner wall of the torque-increasing cavity on the side away from the first-stage sun gear. The first-stage peripheral gear ring is coaxial with the first-stage sun gear.

[0013] Furthermore, the secondary torque amplification component includes a secondary planetary carrier. A secondary sun gear is coaxially mounted at the middle position of the secondary planetary carrier near the primary torque amplification component. The secondary sun gear is coaxial with the primary planetary carrier, and the secondary sun gear near the primary planetary carrier forms a fixed engagement with the primary planetary carrier through a connecting block. Several secondary planetary gear sets are rotatably mounted around the secondary sun gear at equal intervals on the secondary planetary carrier near the primary torque amplification component. The secondary planetary gear sets near the secondary sun gear all mesh with the secondary sun gear, and the secondary planetary gear sets away from the secondary sun gear all mesh with the secondary peripheral gear ring arranged on the inner wall of the torque amplification cavity. The secondary peripheral gear ring is coaxial with the secondary sun gear.

[0014] Furthermore, the three-stage torque amplification assembly includes a three-stage planetary carrier. A three-stage sun gear is concentrically and coaxially mounted at the middle position of the three-stage planetary carrier near the two-stage torque amplification assembly. The three-stage sun gear is concentric and coaxial with the two-stage planetary carrier, and the side of the three-stage sun gear near the two-stage planetary carrier forms a fixed engagement with the two-stage planetary carrier through a connecting block. Several sets of three-stage planetary gears are rotatably mounted around the three-stage sun gear at equal intervals on the side of the three-stage planetary carrier near the two-stage torque amplification assembly. The side of each set of three-stage planetary gears near the three-stage sun gear meshes with the three-stage sun gear, and the side of each set of three-stage planetary gears away from the three-stage sun gear meshes with a three-stage peripheral gear ring arranged on the inner wall of the torque amplification cavity. The three-stage peripheral gear ring is concentric and coaxial with the three-stage sun gear.

[0015] Specifically, the first-stage planetary gear set has three sets, and each set of first-stage planetary gear set includes two meshing first-stage planetary gears. The first-stage planetary gear closer to the first-stage sun gear meshes with the first-stage sun gear, and the other first-stage planetary gear meshes with the first-stage peripheral gear ring.

[0016] The second-level planetary gear set has three sets, each set including one second-level planetary gear. The second-level planetary gear meshes with the second-level sun gear on the side closer to the second-level sun gear, and the second-level sun gear meshes with the second-level peripheral gear ring on the side closer to the second-level peripheral gear ring.

[0017] The three-stage planetary gear set consists of three sets, each set including two meshing three-stage planetary gears. The three-stage planetary gear closest to the three-stage sun gear meshes with the three-stage sun gear, and the other three-stage planetary gear meshes with the three-stage peripheral gear ring.

[0018] More specifically, the outer rod of the output sleeve is concentrically and coaxially fixed at the middle position of the third-stage planetary carrier near the output end. A polygonal sliding groove with a polygonal cross-section is concentrically and coaxially provided inside the outer rod. A polygonal inner rod that fits into the polygonal sliding groove is slidably installed inside the polygonal sliding groove. A clamping screw is threaded on the outer rod to form a clamping fit with the polygonal inner rod. An output connector is detachably provided at the end of the polygonal inner rod.

[0019] In detail, the output connector includes a fixed base, which is fixedly engaged with the end of the polygonal inner rod by a number of fasteners, and an output tenon is provided at the middle position on the side of the fixed base away from the end of the polygonal inner rod.

[0020] More specifically, the torsion-enhancing housing is vertically divided into two half-shells by a vertical plane at the middle position on the side. A rotating ring is mounted on the outer rod by a bearing for rotatability. After the bottom of the half-shell is assembled, it is fixed to the rotating ring by several fasteners. The top of the half-shell is provided with an annular limiting groove that is concentric and coaxial with the input connector. An annular fixing block is embedded in the limiting groove in a concentric and coaxial manner. The annular fixing block is connected to the limiting groove by several hidden screws to form a hidden thread engagement. The top of the annular fixing block is flush with the top of the input connector, and the bottom of the annular fixing block is connected to the edge of the boss on the top of the input connector for limiting engagement.

[0021] The input connector has a snap-fit ​​block on the side near the first-stage sun gear. The first-stage sun gear has a snap-fit ​​groove at a corresponding position. When the input connector is embedded in the first-stage sun gear, the snap-fit ​​block and the snap-fit ​​groove form a snap-fit, and the input connector is limited to the first-stage sun gear by the annular fixing block.

[0022] The input connector is provided with an input tenon groove concentrically and coaxially on the side exposed from the torque-increasing housing.

[0023] Preferably, an external fixing ring is provided on one side of the torsion-increasing housing.

[0024] The beneficial effects of this utility model are:

[0025] 1. By canceling out the forces of the torque-increasing components, the reaction force on the torque-increasing shell is canceled out, thus maintaining the stability of the torque-increasing shell and ensuring the transmission of torque, thereby increasing torque, simplifying the structure, reducing costs, and increasing stability.

[0026] 2. The length of the output sleeve is adjustable, and both the input and output connectors are detachable. The lengths of the input connector, output connector, and output sleeve can be changed according to the operation requirements to improve applicability.

[0027] 3. The entire device can be disassembled for easy maintenance and adjustment. Individual components can be disassembled to meet operational requirements. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the top appearance of this utility model;

[0029] Figure 2 This is a schematic diagram of the bottom appearance of this utility model;

[0030] Figure 3 This is an enlarged schematic diagram of the torsion-increasing housing of this utility model;

[0031] Figure 4 This is a schematic diagram of the disassembly of the annular fixing block of this utility model;

[0032] Figure 5 This is a schematic diagram of the installation of the torque-increasing component of this utility model;

[0033] Figure 6 This is a schematic diagram showing the disassembly of the input connector and the first-stage sun gear of this utility model;

[0034] Figure 7 This is a schematic diagram of the snap-fit ​​block at the bottom of the input connector of this utility model;

[0035] Figure 8 This is a schematic diagram of the installation of the first-stage planetary carrier of this utility model;

[0036] Figure 9 This is a schematic diagram of the installation of the two-stage torque-increasing component of this utility model;

[0037] Figure 10 This is a schematic diagram of the installation of the secondary planetary carrier of this utility model;

[0038] Figure 11 This is a schematic diagram of the installation of the three-stage torque-increasing assembly of this utility model;

[0039] Figure 12 This is a schematic diagram of the installation of the three-stage planetary carrier of this utility model;

[0040] Figure 13 This is a cross-sectional schematic diagram of the torsion-enhancing housing of this utility model;

[0041] Figure 14 This is a schematic diagram of the movement of the first-stage torque-increasing component of this utility model;

[0042] Figure 15 This is a schematic diagram of the operation of the secondary torque-increasing component of this utility model;

[0043] Figure 16 This is a schematic diagram of the operation of the three-stage torque-increasing component of this utility model;

[0044] In the diagram: 1. Input connector; 101. Boss; 102. Input tenon; 103. Snap-fit ​​block;

[0045] 2. Torque-increasing housing; 201. Semi-housing; 202. Limiting groove; 203. Torque-increasing cavity;

[0046] 3. Circular fixing block; 301. Concealed screw;

[0047] 4. First-stage torque boosting assembly; 401. First-stage sun gear; 402. Snap-fit ​​groove; 403. First-stage planetary gear set; 404. First-stage peripheral gear ring; 405. First-stage planetary carrier;

[0048] 5. Secondary torque amplification assembly; 501. Secondary sun gear; 502. Secondary planetary gear set; 503. Secondary peripheral gear ring; 504. Secondary planetary carrier;

[0049] 6. Three-stage torque amplification assembly; 601. Three-stage sun gear; 602. Three-stage planetary gear set; 603. Three-stage peripheral gear ring; 604. Three-stage planetary carrier;

[0050] 7. Output sleeve; 701. Outer rod; 702. Polygonal sliding groove; 703. Polygonal inner rod; 704. Clamping screw; 705. Rotating ring;

[0051] 8. Output connector; 801. Output tenon; 802. Mounting base;

[0052] 9. External fixing ring; 10. Anti-slip pattern. Detailed Implementation

[0053] The embodiments will be further described below with reference to the accompanying drawings.

[0054] like Figures 1-16As shown, in a preferred embodiment 1, a sleeve connecting rod that can increase torque includes a torque-increasing housing 2. The torque-increasing housing 2 is assembled from two half-housings 201 and has a hollow torque-increasing cavity 203 inside. The torque-increasing housing 2 is provided with a number of torque-increasing components. Each torque-increasing component forms a transmission engagement with the torque-increasing housing 2, and the torques of all torque-increasing components on the torque-increasing housing 2 are superimposed and canceled out.

[0055] An input connector 1 is detachably installed in the torque amplification assembly near the input end. The input connector 1 protrudes from one end of the torque amplification housing 2 and forms a transmission with the corresponding torque amplification assembly.

[0056] A telescopic output sleeve 7 is provided on the torque amplification component near the output end. The end of the output sleeve 7 passes through the torque amplification housing 2 and is detachably provided with an output connector 8. The output connector 8 forms a transmission with the torque amplification component through the output sleeve 7.

[0057] As a preferred embodiment 2, the torque amplification components are at least three sets, namely a first-stage torque amplification component 4, a second-stage torque amplification component 5, and a third-stage torque amplification component 6 from the input end to the output end. The first-stage torque amplification component 4 applies a torque of T1 to the torque amplification housing 2, the second-stage torque amplification component 5 applies a torque of T2 to the torque amplification housing 2, and the third-stage torque amplification component 6 applies a torque of T3 to the torque amplification housing 2, where T1+T2+T3=0.

[0058] The first-stage torque-increasing component 4 includes a first-stage planetary carrier 405. A first-stage sun gear 401 is coaxially mounted at the middle position of the first-stage planetary carrier 405 near the input end. The first-stage sun gear 401 is coaxially engaged with the input connector 1 near the input end and rotates synchronously. Several first-stage planetary gear sets 403 are equidistantly mounted around the first-stage sun gear 401 on the first-stage planetary carrier 405 near the input end. The first-stage planetary gear sets 403 mesh with the first-stage sun gear 401 on the side near the first-stage sun gear 401, and the first-stage planetary gear sets 403 mesh with the first-stage peripheral gear ring 404 arranged on the inner wall of the torque-increasing cavity 203 on the side away from the first-stage sun gear 401. The first-stage peripheral gear ring 404 and the first-stage sun gear 401 are coaxially aligned.

[0059] The secondary torque amplification component 5 includes a secondary planetary carrier 504. A secondary sun gear 501 is coaxially mounted at the middle position of the secondary planetary carrier 504 near the primary torque amplification component 4. The secondary sun gear 501 is coaxial with the primary planetary carrier 405, and the secondary sun gear 501 near the primary planetary carrier 405 is fixedly engaged with the primary planetary carrier 405 through a connecting block. Several secondary planetary gear sets 502 are rotatably mounted around the secondary sun gear 501 at equal intervals on the secondary planetary carrier 504 near the primary torque amplification component 4. The secondary planetary gear sets 502 near the secondary sun gear 501 all mesh with the secondary sun gear 501, and the secondary planetary gear sets 502 away from the secondary sun gear 501 all mesh with the secondary peripheral gear ring 503 arranged on the inner wall of the torque amplification cavity 203. The secondary peripheral gear ring 503 is coaxial with the secondary sun gear 501.

[0060] The three-stage torque amplification assembly 6 includes a three-stage planetary carrier 604. A three-stage sun gear 601 is coaxially mounted at the middle position of the three-stage planetary carrier 604 near the two-stage torque amplification assembly 5. The three-stage sun gear 601 is coaxial with the two-stage planetary carrier 504, and the side of the three-stage sun gear 601 near the two-stage planetary carrier 504 forms a fixed fit with the two-stage planetary carrier 504 through a connecting block. Several three-stage planetary gear sets 602 are rotatably mounted around the three-stage sun gear 601 at equal intervals on the side of the three-stage planetary carrier 604 near the two-stage torque amplification assembly 5. The side of the three-stage planetary gear sets 602 near the three-stage sun gear 601 meshes with the three-stage sun gear 601, and the side of the three-stage planetary gear sets 602 away from the three-stage sun gear 601 meshes with the three-stage peripheral gear ring 603 arranged on the inner wall of the torque amplification cavity 203. The three-stage peripheral gear ring 603 is coaxial with the three-stage sun gear 601.

[0061] The first-stage planetary gear set 403 has three sets. Each first-stage planetary gear set 403 includes two meshing first-stage planetary gears. The first-stage planetary gear closer to the first-stage sun gear 401 meshes with the first-stage sun gear 401, and the other first-stage planetary gear meshes with the first-stage peripheral gear ring 404.

[0062] The secondary planetary gear set 502 has three sets, and each set of secondary planetary gear set 502 includes a secondary planetary gear. The secondary planetary gear meshes with the secondary sun gear 501 on the side closer to the secondary sun gear 501, and the secondary sun gear 501 meshes with the secondary peripheral gear ring 503 on the side closer to the secondary peripheral gear ring 503.

[0063] The three-stage planetary gear set 602 has three sets. Each set of three-stage planetary gear set 602 includes two meshing three-stage planetary gears. The three-stage planetary gear closer to the three-stage sun gear 601 meshes with the three-stage sun gear 601, and the other three-stage planetary gear meshes with the three-stage peripheral gear ring 603.

[0064] The rotation of the first-stage sun gear 401 transmits torque to the two first-stage planetary gears in the first-stage planetary gear set 403 and the first-stage peripheral gear ring 404. The first-stage peripheral gear ring 404 is fixed and cannot rotate, forcing the first-stage planetary carrier 405 to rotate and transmit torque to the second-stage sun gear 501. The second-stage sun gear 501 transmits torque to one second-stage planetary gear in the second-stage planetary gear set 502 and the second-stage peripheral gear ring 503. The second-stage peripheral gear ring 503 is fixed and cannot rotate, forcing the second-stage planetary carrier 504 to rotate and transmit torque to the third-stage sun gear 601, the two third-stage planetary gears in the third-stage planetary gear set 602, and the third-stage peripheral gear ring 603. The third-stage peripheral gear ring 603 is fixed and cannot rotate, forcing the third-stage planetary carrier 604 to rotate, thereby transmitting torque to the output sleeve 7.

[0065] As a more preferred embodiment 3, a more detailed embodiment is provided based on embodiment 2, the parameter configuration of which is shown in Table 1:

[0066] Table 1 Torque-increasing component parameters

[0067]

[0068] like Figure 14 As shown, the first-stage peripheral gear ring 404 cannot rotate: the first-stage sun gear 401 rotates clockwise along T1-1. The first-stage sun gear 401 and the first-stage planetary gear both have 20 teeth, and the first-stage peripheral gear ring 404 has 100 teeth. The first-stage planetary gear rotates counterclockwise along T1-2 and clockwise along T1-3 respectively. That is, the transmission ratio between the first-stage sun gear 401 and the first-stage planetary carrier 405 is 5. The first-stage planetary carrier 405 rotates counterclockwise along T1-4, and the torque is increased by 5 times. The force T1 on the first-stage peripheral gear ring 404 is clockwise.

[0069] like Figure 15 As shown, the secondary peripheral gear ring 503 cannot rotate. The secondary sun gear 501 and the primary planetary carrier 405 rotate counterclockwise synchronously along T2-1. The secondary planetary gear set 502 has only one rotation of the secondary planetary gear, and the secondary planetary gear rotates clockwise along T2-2. The secondary sun gear 501 has 50 teeth, the secondary planetary gear has 25 teeth, and the secondary peripheral gear ring 503 has 100 teeth. That is, the transmission ratio between the secondary sun gear 501 and the secondary planetary carrier 504 is 2. The secondary planetary carrier 504 rotates counterclockwise along T2-3, and the torque is doubled. The secondary peripheral gear ring 503 is subjected to a clockwise force T2.

[0070] like Figure 16As shown, the third-stage peripheral gear ring 603 cannot rotate. The third-stage sun gear 601 and the second-stage planetary carrier 504 rotate synchronously counterclockwise along T3-1. The third-stage sun gear 501 has 100 teeth, the two third-stage planetary gears of the third-stage planetary gear set 602 each have 20 teeth, and the third-stage peripheral gear ring 603 has 150 teeth. That is, the transmission ratio between the third-stage sun gear 601 and the third-stage planetary carrier 604 is 8. The third-stage planetary carrier 604 rotates clockwise along T3-4, and the torque is increased by 1.5 times. The force T3 on the third-stage peripheral gear ring 603 is counterclockwise.

[0071] It is concluded that the rotation direction of the first-stage sun gear 401 and the third-stage planetary carrier 604 is the same, and the overall transmission ratio is 15; the force directions of the first-stage peripheral gear ring 404, the second-stage peripheral gear ring 503 and the third-stage peripheral gear ring 603 are exactly opposite, which can cancel out the force.

[0072] The output assembly, the three-stage planetary carrier 604, rotates, transmitting torque to the output sleeve 7. The output sleeve 7 rotates, transmitting torque to the polygonal inner rod 703. The polygonal inner rod 703 rotates, directly transmitting torque to the output connector 8.

[0073] In summary: the overall transmission ratio is 15. When the input connector 1 receives a clockwise torque of 100 N×m, the polygonal inner rod 703 outputs a clockwise torque of 1500 N×m, increasing the torque in the same direction by 1400 N×m. Specifically, the first-stage peripheral gear ring 404 receives a clockwise torque T1 of 500 N×m, the second-stage peripheral gear ring 503 receives a clockwise torque T2 of 1000 N×m, and the third-stage peripheral gear ring 603 receives a counterclockwise torque T3 of 1500 N×m. T1 + T2 = -T3, meaning the torque-increasing housing 2 is canceled out.

[0074] Similarly, when input connector 1 is subjected to a counterclockwise torque of 100 N×m, the polygonal inner rod 703 outputs a counterclockwise torque of 1500 N×m, increasing the torque in the same direction by 1400 N×m.

[0075] Preferably, the first-stage planetary carrier 405, the second-stage planetary carrier 504, and the third-stage planetary carrier 604 are each provided with a corresponding pin at the corresponding rotation position of each gear. Each gear forms a rotation that is limited at both the upper and lower ends on the corresponding pin, so as to prevent the gear from dislodging from the pin. Alternatively, the gear can be prevented from dislodging by limiting the distance between the top of the pin and the upper plane.

[0076] As a preferred embodiment 4, the outer rod 701 of the output sleeve rod 7 is concentrically and coaxially fixed at the middle position of the third-stage planetary carrier 604 near the output end. The outer rod 701 is concentrically and coaxially provided with a polygonal sliding groove 702 with a polygonal cross-section. A polygonal inner rod 703 that fits into the polygonal sliding groove 702 is slidably installed in the polygonal sliding groove 702. A clamping screw 704 is threaded on the outer rod 701 to form a clamping fit with the polygonal inner rod 703. The end of the polygonal inner rod 703 is detachably provided with an output connector 8.

[0077] The sleeve design allows the length of the device to be adjusted during use. After the length is adjusted, the sleeve is tightened by the clamping screw 704. The polygonal sliding groove 702 and the polygonal inner rod 703 ensure axial sliding. At the same time, when the outer rod 701 rotates, it can drive the polygonal inner rod 703 to rotate synchronously, and there will be no relative displacement in the tangential direction.

[0078] Preferably, the polygonal sliding groove 702 can be a regular quadrilateral, in which case the polygonal inner rod 703 is a square rod with a regular quadrilateral cross section.

[0079] As a more preferred embodiment 5, the polygonal sliding groove 702 is provided with a buffer pad layer, which can be made of rubber. The polygonal inner rod 703 can form a damped sliding with the polygonal sliding groove 702 through the buffer pad layer, reducing the sliding sensitivity, facilitating adjustment and use, and further ensuring the stability of rotation and avoiding relative displacement.

[0080] As a preferred embodiment 6, the output connector 8 includes a fixed seat 802, which is fixedly engaged with the end of the polygonal inner rod 703 by a number of fasteners, and an output tenon 801 is provided at the middle position on the side of the fixed seat 802 away from the end of the polygonal inner rod 703.

[0081] The fastener can use a second hidden screw. The fixing seat 802 is fixed by the fastener and the end of the polygonal inner rod 703 through a hidden thread. The second hidden screw is evenly distributed around the middle axis of the fixing seat 802. The output tenon 801 is used to connect with the disassembly component and form a linkage with the disassembly component.

[0082] As a preferred embodiment 7, the torsion-enhancing housing 2 is vertically divided into two half-housings 201 along the vertical plane at the middle position. A rotating ring 705 is mounted on the outer rod 701 through a bearing for rotatability limitation. After the bottom of the half-housing 201 is assembled, it is fixedly mounted on the rotating ring 705 by several fasteners. The top of the half-housing 201 is provided with a limiting groove 202 that is concentric and coaxial with the input connector 1. An annular fixing block 3 is embedded in the limiting groove 202 in a concentric and coaxial manner. The annular fixing block 3 is connected to the limiting groove 202 by several hidden screws 301 to form a hidden thread engagement. The top of the annular fixing block 3 is flush with the top of the input connector 1, and the bottom of the annular fixing block 3 is connected to the edge of the boss 101 on the top of the input connector 1 for limiting engagement.

[0083] The input connector 1 is provided with a snap-fit ​​block 103 on the side near the first-stage sun gear 401. The first-stage sun gear 401 is provided with a snap-fit ​​groove 402 corresponding to the snap-fit ​​block 103 at a corresponding position. When the input connector 1 is embedded in the first-stage sun gear 401, the snap-fit ​​block 103 and the snap-fit ​​groove 402 form a snap-fit, and the input connector 1 is limited to the first-stage sun gear 401 by the annular fixing block 3.

[0084] The input connector 1 is provided with an input tenon 102 on one side of the exposed side of the torque-increasing housing 2.

[0085] The torsion-enhancing housing 2 is made into a half-housing 201 that opens to the left and right, which is convenient for disassembly and installation. During installation, the bottom is installed on the rotating ring 705 with fasteners. The rotating ring 705 and the outer rod 701 form a limited rotation. The rotating ring 705 forms a rotational engagement with the outer rod 701 at a set position through the bearing. This ensures the installation position of the torsion-enhancing housing 2 and the rotational relationship between the torsion-enhancing housing 2 and the outer rod 701. The bottom of the half-housing 201 is fixed on the rotating ring 705 to complete the assembly and fastening. After the input connector 1 is installed, the top of the half-housing 201 is assembled and fastened by the annular fixing block 3 and several hidden screws 301, thereby completing the assembly of the entire torsion-enhancing housing. The remaining gaps can be further ensured by gluing.

[0086] The snap-fit ​​block 103 and snap-fit ​​groove 402 facilitate the snap-fit ​​installation of the input connector 1, ensuring the synchronous rotation of the input connector 1 and the first-stage sun gear 401 after installation. One side of the input connector 1 is a cylindrical head with an input tenon groove 102, and the other side is a rotating column with a snap-fit ​​block 103. The rotating column and the cylindrical head are concentric and coaxial. The snap-fit ​​blocks 103 are arranged at equal intervals around the rotating column. The installation location of the input tenon groove 102 on the cylindrical head is a boss 101. The outer side of the boss 101 forms a recess with the cylindrical head. When the annular fixing block 3 is just located in the limiting groove 202, the annular fixing block 3 is also located above the recess to limit the input connector 1, preventing the input connector 1 from falling out, and does not affect the rotation of the input connector 1. The input tenon groove 102 is used to connect with a rotating tool, which can be manually rotated or mechanically rotated.

[0087] Preferably, the input tenon 102 can be made into a square tenon, and the output tenon 801 can be made into a square tenon. They can be replaced according to the actual situation. The output tenon 801 can also be provided with holes corresponding to the bolts so as to connect with the bolts.

[0088] As a more preferred embodiment 8, the torsion-increasing housing 2 can also be made into two half-housings 201 cut vertically at the top and bottom. The two half-housings 201 can be installed through threaded ports or snap-fit ​​interfaces to form a complete torsion-increasing housing 2.

[0089] As a preferred embodiment 9, an external fixing ring 9 is provided on one side of the outer side of the torsion-increasing housing 2 to facilitate applying force to the device during use.

[0090] As a preferred embodiment 10, the outer sidewall of the torque-enhancing housing 2 is provided with a ring of anti-slip pattern 10 to prevent slipping and facilitate gripping and use.

[0091] As a preferred embodiment 11, a method of using a torque-increasing sleeve connecting rod involves disassembling the component to be disassembled using the aforementioned torque-increasing sleeve connecting rod. When the torque is increased, the torque supplied to the torque-increasing housing 2 is offset by its own torque-increasing component. The method includes the following steps:

[0092] S1. Install input connector 1: Remove the annular fixing block 3 to expose the snap-fit ​​groove 402 of the first-stage sun gear 401. Select input connector 1 according to the construction situation, snap-fit ​​the snap-fit ​​block 103 with the snap-fit ​​groove 402 and install it completely. Then install the annular fixing block 3 into the limiting groove 202 through the hidden screw 301.

[0093] S2. Install output connector 8: Select output connector 8 according to the construction situation, and install the fixing seat 802 to the end of the polygonal inner rod 703 through the fastening seat;

[0094] S3. Confirm the length of the output sleeve 7: Adjust the polygonal inner rod 703 to the set position inside the outer rod 701, and tighten and lock the polygonal inner rod 703 by tightening the clamping screw 704.

[0095] S4. Output connector 8 docking: Connect the output tenon 801 of the output connector 8 to the disassembly slot or disassembly hole of the component to be disassembled to achieve synchronous rotation.

[0096] S5. Rotate the input connector 1 to increase torque: Insert the tool into the input groove 102 of the input connector 1 and rotate it. The tool will drive the input connector 1 to rotate in the same direction.

[0097] The rotation of input connector 1 drives the first-stage sun gear 401 of the first-stage torque amplification component 4 to rotate synchronously. The first-stage sun gear 401 drives the first-stage planetary gear set 403 to rotate synchronously. The outermost first-stage planetary gear of the first-stage planetary gear set 403 travels along the first-stage peripheral gear ring 404, driving the first-stage planetary carrier 405 to rotate synchronously around the first-stage sun gear 401. The rotation direction of the first-stage planetary carrier 405 is opposite to the rotation direction of input connector 1, and the torque on the first-stage peripheral gear ring 404 is T1.

[0098] The rotation of the primary planetary carrier 405 drives the secondary sun gear 501 of the secondary torque-increasing assembly 5 to rotate synchronously. The secondary sun gear 501 drives the secondary planetary gear set 502 to rotate synchronously. The outermost secondary planetary gear of the secondary planetary gear set 502 travels along the secondary peripheral gear ring 503, driving the secondary planetary carrier 504 to rotate synchronously around the secondary sun gear 501. The rotation direction of the secondary planetary carrier 504 is the same as the rotation direction of the primary planetary carrier 405, and the torque on the secondary peripheral gear ring 503 is T2.

[0099] The rotation of the secondary planetary carrier 504 drives the third-stage sun gear 601 of the third-stage torque amplification assembly 5 to rotate synchronously. The third-stage sun gear 601 drives the third-stage planetary gear set 602 to rotate synchronously. The outermost third-stage planetary gear of the third-stage planetary gear set 602 travels along the third-stage peripheral gear ring 603, driving the third-stage planetary carrier 604 to rotate synchronously around the third-stage sun gear 601. The rotation direction of the third-stage planetary carrier 604 is opposite to the rotation direction of the secondary planetary carrier 504, and the torque on the third-stage peripheral gear ring 603 is T3, T1+T2+T3=0. The torque on the torque amplification housing 2 is superimposed and canceled out.

[0100] The rotation of the third-stage planetary carrier 604 drives the output sleeve 7 to rotate synchronously, and the rotation of the output sleeve 7 drives the output connector 8 to rotate synchronously.

Claims

1. A sleeve connecting rod capable of increasing torque, characterized in that, The system includes a torque-increasing housing (2), which is assembled from two half-housing units (201) and has a hollow torque-increasing cavity (203). The interior of the torque-increasing housing (2) is provided with several torque-increasing components. Each torque-increasing component forms a transmission connection with the torque-increasing housing (2), and the torques of all torque-increasing components on the torque-increasing housing (2) are superimposed and canceled out. An input connector (1) is detachably installed in the torque amplification assembly near the input end. The input connector (1) protrudes from one end of the torque amplification housing (2) and forms a transmission with the corresponding torque amplification assembly. A telescopic output sleeve (7) is provided on the torque amplification component near the output end. The end of the output sleeve (7) passes through the torque amplification housing (2) and is detachably provided with an output connector (8). The output connector (8) forms a transmission with the torque amplification component through the output sleeve (7).

2. The sleeve connecting rod with increased torque according to claim 1, characterized in that, The torque amplification components are at least three sets, namely a first-stage torque amplification component (4), a second-stage torque amplification component (5), and a third-stage torque amplification component (6) from the input end to the output end. The first-stage torque amplification component (4) applies a torque of T1 to the torque amplification housing (2), the second-stage torque amplification component (5) applies a torque of T2 to the torque amplification housing (2), and the third-stage torque amplification component (6) applies a torque of T3 to the torque amplification housing (2). T1+T2+T3=0.

3. A sleeve connecting rod with increased torque according to claim 2, characterized in that, The first-stage torque-increasing assembly (4) includes a first-stage planetary carrier (405). A first-stage sun gear (401) is coaxially mounted on the middle position of the first-stage planetary carrier (405) near the input end. The first-stage sun gear (401) is coaxially engaged with the input connector (1) on the side near the input end and rotates synchronously. Several first-stage planetary gear sets (403) are mounted on the side of the first-stage planetary carrier (405) near the input end, rotating at equal intervals around the first-stage sun gear (401). The side of the first-stage planetary gear set (403) near the first-stage sun gear (401) meshes with the first-stage sun gear (401). The side of the first-stage planetary gear set (403) away from the first-stage sun gear (401) meshes with the first-stage peripheral gear ring (404) arranged on the inner wall of the torque-increasing cavity (203). The first-stage peripheral gear ring (404) and the first-stage sun gear (401) are coaxially mounted.

4. A sleeve connecting rod with increased torque according to claim 3, characterized in that, The secondary torque amplification assembly (5) includes a secondary planetary carrier (504). A secondary sun gear (501) is coaxially mounted on the middle position of the secondary planetary carrier (504) near the primary torque amplification assembly (4). The secondary sun gear (501) is coaxial with the primary planetary carrier (405), and the side of the secondary sun gear (501) near the primary planetary carrier (405) forms a fixed fit with the primary planetary carrier (405) through a connecting block. The secondary planetary carrier (504) is close to the primary torque amplification assembly (4). Several secondary planetary gear sets (502) are installed at equal intervals around the secondary sun gear (501) on one side. The secondary planetary gear sets (502) on the side closer to the secondary sun gear (501) mesh with the secondary sun gear (501), and the secondary planetary gear sets (502) on the side away from the secondary sun gear (501) mesh with the secondary peripheral gear ring (503) arranged on the inner wall of the torque-increasing cavity (203). The secondary peripheral gear ring (503) and the secondary sun gear (501) are concentric and coaxial.

5. A sleeve connecting rod with increased torque according to claim 4, characterized in that, The three-stage torque amplification assembly (6) includes a three-stage planetary carrier (604). A three-stage sun gear (601) is coaxially mounted on the middle position of the three-stage planetary carrier (604) near the two-stage torque amplification assembly (5). The three-stage sun gear (601) is coaxial with the two-stage planetary carrier (504), and the side of the three-stage sun gear (601) near the two-stage planetary carrier (504) forms a fixed fit with the two-stage planetary carrier (504) through a connecting block. The three-stage planetary carrier (604) is close to the two-stage torque amplification assembly (5). Several third-stage planetary gear sets (602) are installed at equal intervals around the third-stage sun gear (601) on one side. The side of the third-stage planetary gear set (602) closest to the third-stage sun gear (601) meshes with the third-stage sun gear (601), and the side of the third-stage planetary gear set (602) furthest from the third-stage sun gear (601) meshes with the third-stage peripheral gear ring (603) arranged on the inner wall of the torque-increasing cavity (203). The third-stage peripheral gear ring (603) and the third-stage sun gear (601) are concentric and coaxial.

6. A sleeve connecting rod with increased torque according to claim 5, characterized in that, The first-stage planetary gear set (403) has three sets. Each first-stage planetary gear set (403) includes two meshing first-stage planetary gears. The first-stage planetary gear on the side closer to the first-stage sun gear (401) meshes with the first-stage sun gear (401), and the other first-stage planetary gear meshes with the first-stage peripheral gear ring (404). The second-level planetary gear set (502) has three sets, and each set of second-level planetary gear set (502) includes a second-level planetary gear. The second-level planetary gear meshes with the second-level sun gear (501) on the side closer to the second-level sun gear (501), and the second-level sun gear (501) meshes with the second-level peripheral gear ring (503) on the side closer to the second-level peripheral gear ring (503). The three-stage planetary gear set (602) has three sets. Each set of three-stage planetary gear set (602) includes two meshing three-stage planetary gears. The three-stage planetary gear on the side closer to the three-stage sun gear (601) meshes with the three-stage sun gear (601), and the other three-stage planetary gear meshes with the three-stage peripheral gear ring (603).

7. A sleeve connecting rod with increased torque according to claim 6, characterized in that, The outer rod (701) of the output sleeve rod (7) is concentrically and coaxially fixed at the middle position of the third-stage planetary carrier (604) near the output end. A polygonal sliding groove (702) with a polygonal cross-section is concentrically and coaxially provided inside the outer rod (701). A polygonal inner rod (703) that fits into the polygonal sliding groove (702) is slidably installed inside the polygonal sliding groove (702). A clamping screw (704) is threaded on the outer rod (701) to form a clamping fit with the polygonal inner rod (703). An output connector (8) is detachably provided at the end of the polygonal inner rod (703).

8. A sleeve connecting rod with increased torque according to claim 7, characterized in that, The output connector (8) includes a fixed seat (802), which is fixedly engaged with the end of the polygonal inner rod (703) by a number of fasteners. An output tenon (801) is provided at the middle position on the side of the fixed seat (802) away from the end of the polygonal inner rod (703).

9. A sleeve connecting rod with increased torque according to claim 8, characterized in that, The torsion-enhancing housing (2) is vertically cut into two half-housings (201) along the vertical plane at the middle position. A rotating ring (705) is installed on the outer rod (701) through a bearing limit. After the bottom of the half-housing (201) is assembled, it is fixedly installed on the rotating ring (705) by several fasteners. The top of the half-housing (201) is provided with a limiting groove (202) that is coaxial with the input connector (1). A ring fixing block (3) is embedded in the limiting groove (202) in a coaxial manner. The ring fixing block (3) forms a hidden thread fit with the limiting groove (202) through several hidden screws (301). The top of the ring fixing block (3) is flush with the top of the input connector (1), and the bottom of the ring fixing block (3) forms a limiting fit with the edge of the boss (101) on the top of the input connector (1). The input connector (1) is provided with a snap-fit ​​block (103) on the side near the first-stage sun gear (401). The first-stage sun gear (401) is provided with a snap-fit ​​groove (402) corresponding to the snap-fit ​​block (103) at the corresponding position. When the input connector (1) is embedded in the first-stage sun gear (401), the snap-fit ​​block (103) and the snap-fit ​​groove (402) are connected to form a snap-fit, and the input connector (1) is limited to the first-stage sun gear (401) by the annular fixing block (3). The input connector (1) is provided with an input tenon (102) on one side exposed from the torsion-enhancing housing (2).

10. A sleeve connecting rod with increased torque according to any one of claims 1 to 9, characterized in that, An external fixing ring (9) is provided on one side of the outer side of the torsion-increasing housing (2).

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