Torque wrench with adjustable specifications

Abstract

The present invention provides a torque wrench with adjustable specifications, which includes a wrench body, a plurality of connecting sleeves and a locking sleeve. Among them, a connecting component and a locking component are provided between adjacent connecting sleeves. The connecting component and the locking component are locked to fix adjacent connecting sleeves. One end of the connecting sleeve is provided with a connecting block, and the connecting block is detachably arranged on the wrench body; the locking sleeve is detachably arranged at one end of the connecting sleeve, and a plurality of locking plates are arranged on the locking sleeve. The plurality of locking plates enclose a locking cavity for a nut, and the locking plates are slidably arranged along the radial direction of the locking sleeve. By providing a plurality of connecting sleeves, the present invention can facilitate the change of the length of the sleeve assembly; and by providing locking plates, the size of the bolt or nut that the sleeve assembly can lock can be changed, effectively reducing the carrying amount of the sleeve and increasing the convenience of carrying and using the torque wrench.

Description

Technical Field

[0001] The present invention belongs to the technical field of torque wrenches, and more specifically, relates to a torque wrench with adjustable specifications. Background Art

[0002] In industrial production, the connection between workpieces mostly uses bolts and nuts. There is a certain limit value for the force between bolts and nuts. When the torque for rotating the bolt (nut) exceeds the set value, the phenomenon of "slipping threads" is very likely to occur. In order to protect the structures of bolts and nuts, a torque wrench is derived.

[0003] A torque wrench, also known as an electric torque wrench, a torque wrench, and a torque adjustable wrench, is a type of wrench, generally divided into three categories: a manual torque wrench, a pneumatic torque wrench, and an electric torque wrench. When using a torque wrench, when the rotating torque is greater than the set value, a clicking sound will be emitted, and in this state, even if it continues to rotate, it will not transfer the torque to the bolt (nut). A fixed-torque wrench is widely used in assembly lines with strict requirements for the tightening process to make the torque values of each fastener of the product consistent, ensuring the quality of the produced product.

[0004] When the operating space is small, generally a socket is first installed on the torque wrench, and then the other end of the socket is locked to the bolt or nut, and then the socket can be twisted with the torque wrench to complete the installation and disassembly of the bolt or nut.

[0005] However, when the existing torque wrench is in use, the length of the socket is difficult to adjust. When sockets of different lengths are needed, only different sockets can be replaced. Moreover, for the existing torque wrench, the same socket can only lock one type of bolt or nut. When the types of nuts to be installed or disassembled are different, different sockets also need to be replaced, so that in order to meet the usage requirements, a large number of sockets often need to be carried, which is inconvenient to carry and use. Summary of the Invention

[0006] The purpose of the present invention is to provide a torque wrench with adjustable specifications to solve the problems of inconvenient carrying and use of the existing torque wrench.

[0007] To achieve the above object, the technical solution adopted by the present invention is: to provide a torque wrench with adjustable specifications, including a wrench body, a plurality of connecting sleeves and a locking sleeve. Among them, a connecting component and a locking component are provided between adjacent connecting sleeves. The connecting component and the locking component are locked to fix adjacent connecting sleeves. One end of the connecting sleeve is provided with a connecting block, and the connecting block is detachably arranged on the wrench body; the locking sleeve is detachably arranged at one end of the connecting sleeve, and a plurality of locking plates are arranged on the locking sleeve. The plurality of locking plates enclose a locking cavity for the nut. The locking plates are slidably arranged along the radial direction of the locking sleeve, and a locking member is arranged between the locking plates and the locking sleeve so that the locking plates can be fixed relative to the locking sleeve.

[0008] In a possible implementation manner, the connecting component includes a threaded rod arranged at one end of the connecting sleeve and a connecting thread arranged on the inner wall at the other end of the connecting sleeve. The threaded rod and the connecting thread are adapted to each other. For two adjacent connecting sleeves, the threaded rod of one connecting sleeve can be screwed into the other connecting sleeve.

[0009] In a possible implementation manner, the locking component includes a plurality of first chutes, a plurality of second chutes and a connecting outer cylinder. The first chutes are arranged at one end of the connecting sleeve, the second chutes are arranged at the other end of the connecting sleeve, and the first chutes and the second chutes correspond one by one. When adjacent connecting sleeves are connected, the first chute of one connecting sleeve communicates with the corresponding second chute of the other connecting sleeve. The inner diameter of the connecting outer cylinder is the same as the outer diameter of the connecting sleeve. A plurality of sliding strips are arranged on the inner wall of the connecting outer cylinder, and the sliding strips correspond to the first chutes one by one. The connecting outer cylinder is sleeved outside the connecting sleeve, and the sliding strips are inserted into the corresponding first chutes. When adjacent connecting sleeves are connected, the sliding strips can be partially arranged in the second chutes due to sliding.

[0010] In a possible implementation manner, the first chute includes a deep groove and a shallow groove. The depth of the deep groove is greater than the depth of the shallow groove, and the depth of the shallow groove is the same as the depth of the corresponding second chute. When adjacent connecting sleeves are connected, the shallow groove communicates with the corresponding second chute. A sliding block is arranged on the sliding strip, and the sliding block is inserted into the corresponding deep groove.

[0011] In a possible implementation manner, at the end of the locking sleeve opposite to the end where the locking plates are arranged, the threaded rod and the second chute are provided, so that the locking sleeve can be detachably arranged on the connecting sleeve.

[0012] In a possible implementation, the connecting block is arranged at the top end of the threaded rod. The cross-section of the connecting block is hexagonal, and the length of the diagonal of the hexagon is less than the diameter of the threaded rod.

[0013] In a possible implementation, a plurality of jacks are uniformly arranged along the circumferential direction of the locking sleeve. The jacks correspond to the locking plates one by one. The locking plates are inserted into the corresponding jacks. A limiting component is arranged between the locking plates and the locking sleeve. When the limiting component is locked, the locking plates and the locking sleeve are relatively fixed.

[0014] In a possible implementation, the locking sleeve includes a large-diameter cylinder and a small-diameter cylinder. The small-diameter cylinder is arranged at one end of the large-diameter cylinder. The second chute of the locking sleeve and the threaded rod are arranged at the other end of the large-diameter cylinder. The jacks are arranged on the small-diameter cylinder. The locking plate includes a horizontal cross plate and a vertical plate connected to one end of the cross plate. The vertical plate is obliquely arranged. When the cross plate is inserted into the jack, the distance from the end of the vertical plate far from the cross plate to the axis of the small-diameter cylinder gradually decreases from the end far from the cross plate to the end close to the cross plate. The limiting component includes a limiting cylinder. The limiting cylinder is sleeved on the large-diameter cylinder and can move axially along the large-diameter cylinder. The end of the limiting cylinder close to the small-diameter cylinder extends to the outside of the large-diameter cylinder. The end of the vertical plate far from the cross plate is inserted into the limiting cylinder, and the end of the vertical plate far from the cross plate is flush with the outer wall of the large-diameter cylinder.

[0015] In a possible implementation, a return spring is arranged between the vertical plate and the small-diameter cylinder. When the return spring is in a natural state, the end of the vertical plate far from the cross plate is flush with the outer wall of the large-diameter cylinder.

[0016] In a possible implementation, a first limiting thread is arranged on the outer side wall of the large-diameter cylinder, and a second limiting thread is arranged on the inner wall of the limiting cylinder. The limiting cylinder is screwed on the large-diameter cylinder. By twisting the limiting cylinder, the limiting cylinder can move axially along the large-diameter cylinder relative to the large-diameter cylinder. When the limiting cylinder moves towards the cross plate, it can press the vertical plate to drive the cross plate to move radially along the small-diameter cylinder.

[0017] The beneficial effects of the torque wrench with adjustable specifications provided by the present invention are as follows: Compared with the prior art, by providing a plurality of connecting sleeves, a connecting component and a locking component are arranged between the connecting sleeves, so as to facilitate the fixation between adjacent connecting sleeves. When in use, by increasing the number of connecting sleeves, the length of the sleeve assembly can be increased. On the contrary, by reducing the number of connecting sleeves, the length of the sleeve assembly can be reduced. Also, by providing a locking sleeve, a plurality of locking plates are arranged on the locking sleeve, and the plurality of locking plates enclose a locking cavity for the nut. The locking plates are slidably arranged along the radial direction of the locking sleeve. By moving the locking plates towards the axis of the locking sleeve, the size of the locking cavity can be reduced, so as to lock bolts or nuts with smaller sizes. On the contrary, by moving the locking plates away from the axis of the locking sleeve, the size of the locking cavity can be increased, so as to accommodate bolts or nuts with larger sizes, effectively reducing the amount of sleeves carried and increasing the convenience of carrying and using the torque wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of the torque wrench with adjustable specifications provided by the embodiment of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the connecting sleeve provided by the embodiment of the present invention;

[0021] Figure 3 It is a schematic assembly structure diagram of the connecting outer cylinder and the connecting sleeve in one state provided by the embodiment of the present invention;

[0022] Figure 4 It is a schematic assembly structure diagram of the connecting outer cylinder and the connecting sleeve in another state provided by the embodiment of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the connecting outer cylinder provided by the embodiment of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the locking sleeve provided by the embodiment of the present invention;

[0025] Figure 7 It is a schematic assembly structure diagram of the limiting cylinder and the locking sleeve provided by the embodiment of the present invention;

[0026] Figure 8Schematic top view structure diagram of the locking sleeve provided by the embodiment of the present invention;

[0027] Figure 9 Schematic structure diagram of the locking plate provided by the embodiment of the present invention.

[0028] Among them, the reference numerals in the figure are as follows:

[0029] 1. Wrench body; 2. Connecting sleeve; 3. Connecting outer cylinder; 4. Locking sleeve; 5. Limiting cylinder;

[0030] 201. Connecting block; 202. Threaded rod; 203. First chute; 204. Second chute; 205. Deep groove; 206. Shallow groove;

[0031] 301. Slide bar; 302. Slide block;

[0032] 401. Locking plate; 402. Locking cavity; 403. Insertion hole; 404. Large-diameter cylinder; 405. Small-diameter cylinder; 406. Horizontal plate; 407. Vertical plate; 408. Return spring. Specific embodiments

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] It should be further noted that the drawings and embodiments of the present invention mainly describe and explain the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above specific forms and settings in a well-known manner.

[0035] When an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0036] The orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0037] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, and "several" means one or more, unless otherwise specifically defined.

[0038] Now, the torque wrench with adjustable specifications provided by the present invention will be described.

[0039] Please refer to Figure 1 , the torque wrench with adjustable specifications includes a wrench body 1, a plurality of connecting sleeves 2 and a locking sleeve 4. Among them, a connecting component and a locking component are provided between adjacent connecting sleeves 2. The connecting component and the locking component are locked to fix adjacent connecting sleeves 2. One end of the connecting sleeve 2 is provided with a connecting block 201, and the connecting block 201 is detachably arranged on the wrench body 1; the locking sleeve 4 is detachably arranged at one end of the connecting sleeve 2. The locking sleeve 4 is provided with a plurality of locking plates 401, and the plurality of locking plates 401 enclose a locking cavity 402 for the nut. The locking plates 401 are slidably arranged along the radial direction of the locking sleeve 4, and a locking member is provided between the locking plates 401 and the locking sleeve 4 so that the locking plates 401 can be fixed relative to the locking sleeve 4.

[0040] The beneficial effects of the torque wrench with adjustable specifications provided in this embodiment are as follows: Compared with the prior art, the torque wrench with adjustable specifications provided in this embodiment is provided with a plurality of connecting sleeves 2, and a connecting component and a locking component are arranged between the connecting sleeves 2, thereby facilitating the fixation between adjacent connecting sleeves 2. During use, by increasing the number of connecting sleeves 2, the length of the sleeve assembly can be increased. Conversely, by reducing the number of connecting sleeves 2, the length of the sleeve assembly can be reduced; and by providing a locking sleeve 4, the locking sleeve is provided with a plurality of locking plates 401, and the plurality of locking plates 401 enclose a locking cavity 402 for the nut, as Figure 8As shown, the locking plate 401 is slidably arranged along the radial direction of the locking sleeve 4. By moving the locking plate 401 towards the axis of the locking sleeve 4, the size of the locking cavity 402 can be reduced, so that bolts or nuts with smaller sizes can be locked. Conversely, by moving the locking plate 401 away from the axis of the locking sleeve 4, the size of the locking cavity 402 can be increased, so that bolts or nuts with larger sizes can be retracted, effectively reducing the carrying amount of the sleeve and increasing the convenience of carrying and using the torque wrench.

[0041] As Figure 2 shown, the connecting component includes a threaded rod 202 provided at one end of the connecting sleeve 2 and a connecting thread provided on the inner wall of the other end of the connecting sleeve 2. The threaded rod 202 and the connecting thread are adapted to each other. For two adjacent connecting sleeves 2, the threaded rod 202 of one connecting sleeve 2 can be screwed into the other connecting sleeve 2.

[0042] The arrangement of the threaded rod 202 and the connecting thread makes the connection between adjacent connecting sleeves 2 simpler, so that when it is necessary to increase or decrease the length of the sleeve assembly, the operation difficulty can be reduced, thereby reducing the operation time, enabling the torque wrench with adjustable specifications of the present invention to be put into production more quickly, and improving the production efficiency when using the torque wrench with adjustable specifications of the present invention.

[0043] Combined with Figure 2 、 Figure 3 and Figure 4 shown, the locking component includes a plurality of first chutes 203, a plurality of second chutes 204 and a connecting outer cylinder 3. The first chutes 203 are provided at one end of the connecting sleeve 2, the second chutes 204 are provided at the other end of the connecting sleeve 2, the first chutes 203 and the second chutes 204 correspond one by one, and when adjacent connecting sleeves 2 are connected, the first chute 203 of one connecting sleeve 2 communicates with the corresponding second chute 204 of the other connecting sleeve 2.

[0044] As Figure 5 shown, the inner diameter of the connecting outer cylinder 3 is the same as the outer diameter of the connecting sleeve 2. A plurality of sliding strips 301 are provided on the inner wall of the connecting outer cylinder 3. The sliding strips 301 correspond to the first chutes 203 one by one. The connecting outer cylinder 3 is sleeved outside the connecting sleeve 2, and the sliding strips 301 are inserted into the corresponding first chutes 203. When adjacent connecting sleeves 2 are connected, the sliding strips 301 can be partially arranged in the second chutes 204 due to sliding.

[0045] When adjacent connecting sleeves 2 need to be screwed together, the connecting outer cylinder 3 slides up along the first chute 203 until the bottom end of the connecting outer cylinder 3 and the bottom end of the connecting sleeve 2 are exposed, as Figure 4 shown. At this time, it is convenient for the threaded rod 202 of one connecting sleeve 2 in adjacent connecting sleeves 2 to be screwed into the other connecting sleeve 2.

[0046] After the adjacent connecting sleeves 2 are screwed together, the connecting outer cylinder 3 slides upward along the first sliding groove 203 until the sliding strip 301 of the connecting outer cylinder 3 is partially inserted into the second sliding groove 204 of the lower connecting sleeve 2. At this time, when the wrench body 1 rotates the sleeve assembly, the connecting outer cylinder 3 bears the torsional force, preventing the driving of the wrench from loosening the adjacent connecting sleeves 2.

[0047] As Figure 2 and Figure 5 shown, the first sliding groove 203 includes a deep groove 205 and a shallow groove 206. The depth of the deep groove 205 is greater than that of the shallow groove 206. The depth of the shallow groove 206 is the same as that of the corresponding second sliding groove 204. When the adjacent connecting sleeves 2 are connected, the shallow groove 206 communicates with the corresponding second sliding groove 204. A slider 302 is provided on the sliding strip 301, and the slider 302 is inserted into the corresponding deep groove 205.

[0048] When the adjacent connecting sleeves are disconnected, the connecting outer cylinder 3 loses the support of the second sliding groove 204 and will slide downward. The arrangement of the deep groove 205 and the slider 302 causes the slider 302 to be caught by the side wall of the deep groove 205, so that the connecting outer cylinder 3 will not fall off from the connecting sleeve 2, preventing the loss of the connecting outer cylinder 3.

[0049] As Figure 6 shown, relative to the end provided with the locking plate 401, the other end of the locking sleeve 4 is provided with a threaded rod 202 and a second sliding groove 204, so that the locking sleeve 4 can be detachably arranged on the connecting sleeve 2. When it is necessary to connect the locking sleeve 4 to the adjacent connecting sleeve 2, only need to screw the threaded rod 202 on the locking sleeve 4 to the connecting sleeve 2 of the necklace, and slide down the connecting outer cylinder 3 on the adjacent connecting sleeve 2.

[0050] Combined with Figure 2 and Figure 7 shown, a connecting block 201 is arranged at the top end of the threaded rod 202. The cross-section of the connecting block 201 is hexagonal, and the length of the diagonal of the hexagon is less than the diameter of the threaded rod 202.

[0051] Since the wrench body 1 may sometimes not use the sleeve assembly during use, there is a hexagonal cross-section hole on the wrench body 1 for locking nuts or bolts. In order to facilitate the cooperation with this hole, the cross-section of the connecting block 201 is also hexagonal. When connection is required, only need to insert the connecting block 201 into the hexagonal hole of the wrench body 1.

[0052] Since the connecting block 201 is arranged at the top end of the threaded rod 202, and the threaded rod 202 needs to be screwed into the adjacent connecting sleeve 2, by setting the length of the diagonal of the hexagon of the cross-section of the connecting block 201 to be less than the diameter of the threaded rod 202, the connecting block 201 can be inserted into the connecting sleeve 2, preventing the presence of the connecting block 201 from interfering with the connection of the adjacent connecting sleeve 2, and improving the convenience of use of the torque wrench with adjustable specifications of the present invention.

[0053] As Figure 6 shown, a plurality of jack holes 403 are uniformly arranged along the circumferential direction of the locking sleeve 4. The jack holes 403 correspond to the locking plates 401 one by one. The locking plates 401 are inserted into the corresponding jack holes 403. A limiting component is arranged between the locking plates 401 and the locking sleeve 4. The limiting component is locked to make the locking plates 401 and the locking sleeve 4 relatively fixed.

[0054] The setting of the jack holes 403, on the one hand, provides an insertion space for the locking plates 401 to partially insert into the locking sleeve 4. On the other hand, since the cross-sections of the jack holes 403 and the locking plates 401 are the same, after the locking plates 401 are inserted into the jack holes 403, the four side walls of the locking plates 401 are in contact with the four side walls of the jack holes 403, and the jack holes 403 can play a guiding role in the movement of the locking plates 401, so that the locking plates 401 can only slide along the radial direction of the locking sleeve 4.

[0055] Combined with Figure 6 and Figure 7 shown, the locking sleeve 4 includes a large-diameter cylinder 404 and a small-diameter cylinder 405. The small-diameter cylinder 405 is arranged at one end of the large-diameter cylinder 404. The second sliding groove 204 of the locking sleeve 4 and the threaded rod 202 are arranged at the other end of the large-diameter cylinder 404. The jack holes 403 are arranged on the small-diameter cylinder 405. The limiting component includes a limiting cylinder 5, and the limiting cylinder 5 is sleeved on the large-diameter cylinder 404.

[0056] The settings of the large-diameter cylinder 404 and the small-diameter cylinder 405 make that after the limiting cylinder 5 is screwed on the large-diameter cylinder 404, there is a certain space between the inner wall of the limiting cylinder 5 and the outer wall of the small-diameter cylinder 405, thus providing a setting space and a moving space for the locking plates 401.

[0057] In this embodiment, the locking plate 401 includes a horizontal cross plate 406 and a vertical plate 407 connected to one end of the cross plate 406. The vertical plate 407 is arranged obliquely. When the cross plate 406 is inserted into the jack 403, the vertical plate 407 is arranged obliquely such that the distance from the end far from the cross plate 406 to the axis of the small-diameter cylinder 405 increases from small to large towards the end close to the cross plate 406. The limiting cylinder 5 can move along the axial direction of the large-diameter cylinder 404, and one end of the limiting cylinder 5 close to the small-diameter cylinder 405 extends outside the large-diameter cylinder 404. The end of the vertical plate 407 far from the cross plate 406 is inserted into the limiting cylinder 5, and the end of the vertical plate 407 far from the cross plate 406 is flush with the outer wall of the large-diameter cylinder 404.

[0058] Due to the oblique arrangement of the vertical plate 407 and the fact that the end of the vertical plate 407 far from the cross plate 406 is flush with the outer wall of the large-diameter cylinder 404, the end of the vertical plate 407 far from the cross plate 406 can be in contact with the inner wall of the limiting cylinder 5 in the initial state. When the limiting cylinder 5 moves towards the cross plate 406, the limiting cylinder 5 will receive more parts of the vertical plate 407 into the limiting cylinder 5. Due to the arrangement of the vertical plate 407, the side wall of the limiting cylinder 5 will drive the vertical plate 407 to move radially along the small-diameter cylinder 405, thereby driving the part of the cross plate 406 inserted into the locking sleeve 4 to move towards the axis of the small-diameter cylinder 405, that is, reducing the size of the locking cavity 402. At this time, bolts or nuts with smaller sizes can be locked.

[0059] Conversely, when the limiting cylinder 5 moves away from the cross plate 406, the limiting cylinder 5 will release more parts of the vertical plate 407 outside the limiting cylinder 5. Due to the arrangement of the vertical plate 407, at this time, the vertical plate 407 can move radially outward along the small-diameter cylinder 405, thereby driving the part of the cross plate 406 inserted into the locking sleeve 4 to move away from the axis of the small-diameter cylinder 405, that is, increasing the size of the locking cavity 402. At this time, bolts or nuts with larger sizes can be locked.

[0060] As Figure 9 shown, a return spring 408 is provided between the vertical plate 407 and the small-diameter cylinder 405. When the return spring 408 is in the natural state, the end of the vertical plate 407 far from the cross plate 406 is flush with the outer wall of the large-diameter cylinder 404.

[0061] The setting of the return spring 408 facilitates the reset of the locking plate 401 on the one hand, and provides support for the locking plate 401 to prevent the locking plate 401 from sliding when bolts or nuts are not locked on the other hand.

[0062] Finally, a first limiting thread is provided on the outer side wall of the large-diameter cylinder 404, and a second limiting thread is provided on the inner wall of the limiting cylinder 5. The limiting cylinder 5 is screwed onto the large-diameter cylinder 404. By twisting the limiting cylinder 5, the limiting cylinder 5 can move axially along the large-diameter cylinder 404 relative to the large-diameter cylinder 404. When the limiting cylinder 5 moves towards the transverse plate 406, it can press the vertical plate 407 to drive the transverse plate 406 to move radially along the small-diameter cylinder 405.

[0063] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A torque wrench with adjustable specifications, characterized in that, Comprising: A wrench body (1); A plurality of connecting sleeves (2), a connecting component and a locking component are provided between adjacent connecting sleeves, the connecting component and the locking component are locked to fix adjacent connecting sleeves (2), one end of the connecting sleeve (2) is provided with a connecting block, and the connecting block is detachably arranged on the wrench body (1); A locking sleeve (4), detachably arranged at one end of the connecting sleeve (2), a plurality of locking plates (401) are arranged on the locking sleeve (4), and the plurality of locking plates (401) enclose a locking cavity (402) for a nut. The locking plate (401) is slidably arranged along the radial direction of the locking sleeve (4), and a locking member is arranged between the locking plate (401) and the locking sleeve (4) so that the locking plate (401) can be fixed relative to the locking sleeve (4); The connecting component includes a threaded rod (202) arranged at one end of the connecting sleeve (2) and a connecting thread arranged on the inner wall of the other end of the connecting sleeve (2). The threaded rod (202) is adapted to the connecting thread. For two adjacent connecting sleeves (2), the threaded rod (202) of one connecting sleeve (2) can be screwed into the other connecting sleeve (2); The locking component includes a plurality of first chutes (203), a plurality of second chutes (204) and a connecting outer cylinder (3). The first chutes (203) are arranged at one end of the connecting sleeve (2), the second chutes (204) are arranged at the other end of the connecting sleeve (2), the first chutes (203) and the second chutes (204) correspond to each other. When adjacent connecting sleeves (2) are connected, the first chute (203) of one connecting sleeve (2) communicates with the corresponding second chute (204) of the other connecting sleeve (2). The inner diameter of the connecting outer cylinder (3) is the same as the outer diameter of the connecting sleeve (2). A plurality of sliding strips (301) are arranged on the inner wall of the connecting outer cylinder (3), and the sliding strips (301) correspond to the first chutes (203) one by one. The connecting outer cylinder (3) is sleeved outside the connecting sleeve (2), and the sliding strips (301) are inserted into the corresponding first chutes (203). When adjacent connecting sleeves (2) are connected, the sliding strips (301) can be partially arranged in the second chutes (204) due to sliding; The first chute (203) includes a deep groove (205) and a shallow groove (206). The depth of the deep groove (205) is greater than the depth of the shallow groove (206). The depth of the shallow groove (206) is the same as the depth of the corresponding second chute (204). When adjacent connecting sleeves (2) are connected, the shallow groove (206) communicates with the corresponding second chute (204). A slider (302) is arranged on the sliding strip (301), and the slider (302) is inserted into the corresponding deep groove (205).

2. The torque wrench with adjustable specifications according to claim 1, characterized in that: Relative to one end provided with the locking plate (401), the other end of the locking sleeve (4) is provided with the threaded rod (202) and the second chute (204), so that the locking sleeve (4) is detachably arranged on the connecting sleeve (2).

3. The torque wrench with adjustable specifications according to claim 2, wherein: The connecting block (201) is arranged at the top end of the threaded rod (202). The cross-section of the connecting block (201) is hexagonal, and the length of the diagonal of the hexagon is less than the diameter of the threaded rod (202).

4. The torque wrench with adjustable specifications according to claim 3, wherein: A plurality of jacks (403) are uniformly arranged along the circumferential direction of the locking sleeve (4). The jacks (403) correspond to the locking plates (401) one by one. The locking plates (401) are inserted into the corresponding jacks (403). A limiting component is arranged between the locking plates (401) and the locking sleeve (4). The limiting component is locked to make the locking plates (401) and the locking sleeve (4) relatively fixed.

5. The torque wrench with adjustable specifications according to claim 4, characterized in that: The locking sleeve (4) includes a large-diameter cylinder (404) and a small-diameter cylinder (405). The small-diameter cylinder (405) is arranged at one end of the large-diameter cylinder (404). The second chute (204) and the threaded rod (202) of the locking sleeve (4) are arranged at the other end of the large-diameter cylinder (404). The jacks (403) are arranged on the small-diameter cylinder (405). The locking plate (401) includes a horizontal cross plate (406) and a vertical plate (407) connected to one end of the cross plate (406). The vertical plate (407) is obliquely arranged. When the cross plate (406) is inserted into the jack (403), the distance from the end of the vertical plate (407) far from the cross plate (406) to the axis of the small-diameter cylinder (405) is arranged from small to large as it approaches the cross plate (406). The limiting component includes a limiting cylinder (5). The limiting cylinder (5) is sleeved on the large-diameter cylinder (404), and the limiting cylinder (5) can move along the axial direction of the large-diameter cylinder (404). One end of the limiting cylinder (5) close to the small-diameter cylinder (405) extends to the outside of the large-diameter cylinder (404). The end of the vertical plate (407) far from the cross plate (406) is inserted into the limiting cylinder (5), and the end of the vertical plate (407) far from the cross plate (406) is flush with the outer wall of the large-diameter cylinder (404).

6. The torque wrench with adjustable specifications according to claim 5, characterized in that: A return spring (408) is arranged between the vertical plate (407) and the small-diameter cylinder (405). When the return spring (408) is in a natural state, the end of the vertical plate (407) far from the cross plate (406) is flush with the outer wall of the large-diameter cylinder (404).

7. The torque wrench with adjustable specifications according to claim 6, characterized in that: A first limiting thread is provided on the outer side wall of the large-diameter cylinder (404), a second limiting thread is provided on the inner wall of the limiting cylinder (5), the limiting cylinder (5) is screwed onto the large-diameter cylinder (404), by twisting the limiting cylinder (5), the limiting cylinder (5) can move axially along the large-diameter cylinder (404) relative to the large-diameter cylinder (404), and when the limiting cylinder (5) moves towards the transverse plate (406), it can press the vertical plate (407) to drive the transverse plate (406) to move radially along the small-diameter cylinder (405).

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