Clamp

Abstract

The utility model relates to the technical field of tools, and discloses a clamp which comprises a clamp mechanism, a connecting rod mechanism, a driving mechanism and a locking mechanism. The clamping mechanism comprises a first clamping arm, a second clamping arm and a first connecting shaft, and the first clamping arm and the second clamping arm are hinged through the first connecting shaft; the connecting rod mechanism comprises a first connecting rod, a second connecting rod and a second connecting shaft; the driving mechanism is connected with the second connecting shaft and can drive the second connecting shaft to be close to or away from the first connecting shaft. The locking mechanism is connected with the driving mechanism; according to the clamp provided by the utility model, the clamping force of the first clamping arm and the second clamping arm on an object can be fixed through the mutual matching of the connecting rod mechanism, the driving mechanism and the locking mechanism, the clamping stability is good, and the safety and the reliability are high.

Description

Technical Field

[0001] The utility model relates to the technical field of tools, in particular to a clamp. Background Art

[0002] Existing clamps are usually of scissor-type structure. Such clamps clamp objects by gripping the hands tightly. However, if the hands are slightly loosened, the clamping force of the clamp will be reduced and the clamp will easily fail to clamp and fix the object. Therefore, the clamping stability of such clamps is poor and the safety and reliability are low. Utility Model Content

[0003] Aiming to solve at least one of the technical problems existing in the prior art, the utility model aims to provide a clamp having good clamping stability and high safety and reliability.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a clamp, including a clamp mechanism, a connecting rod mechanism, a driving mechanism and a locking mechanism; the clamp mechanism includes a first clamp arm, a second clamp arm and a first connecting shaft, the first clamp arm and the second clamp arm are hinged through the first connecting shaft, and the first clamp arm and the second clamp arm are arranged in a cross form; the connecting rod mechanism includes a first connecting rod, a second connecting rod and a second connecting shaft, the second connecting shaft is located on one side of the first connecting shaft, the first connecting rod has a first connecting end and a second connecting end opposite to each other, the first connecting end is hinged to an end of the first clamp arm close to the second connecting shaft, the second connecting rod has a third connecting end and a fourth connecting end opposite to each other, the third connecting end is hinged to an end of the second clamp arm close to the second connecting shaft, and the second connecting end and the fourth connecting end are hinged through the second connecting shaft; the driving mechanism is connected to the second connecting shaft and can drive the second connecting shaft to approach or move away from the first connecting shaft; the locking mechanism is connected to the driving mechanism; wherein the locking mechanism can lock the driving mechanism to fix the second connecting shaft at a preset position.

[0005] In some embodiments, the driving mechanism includes a connecting member, a mounting member, a rack, a first gear and an operating member, the connecting member is connected to the second connecting shaft, the mounting member is located on the side of the second connecting shaft away from the first connecting shaft, the rack is movably connected to the mounting member, the rack and the connecting member are fixedly connected, the first gear and the rack cooperate, the operating member is connected to the mounting member, and the locking mechanism connects the mounting member and the operating member respectively; wherein the operating member can drive the first gear to rotate around the central axis of the first gear to drive the rack to move along the mounting member.

[0006] In some embodiments, the driving mechanism further includes a bracket and a pull rope, the bracket is fixedly connected to the mounting member, the first connecting shaft is fixedly connected to the bracket, and the rack is fixedly connected to the connecting member via the pull rope.

[0007] In some embodiments, the operating member includes a rotating shaft, a second gear and a crank, the rotating shaft is rotatably connected to the mounting member, the second gear is sleeved and fixed to the rotating shaft and cooperates with the first gear, the crank is fixedly connected to the rotating shaft and can drive the rotating shaft to rotate around the central axis of the rotating shaft, and the locking mechanism is connected to the rotating shaft.

[0008] In some embodiments, the locking mechanism includes a locking wheel, a third connecting shaft and a locking member; the locking wheel is fixedly connected to the rotating shaft, and the locking wheel has a plurality of protrusions distributed around the center of the locking wheel, and a locking groove is formed between two adjacent protrusions; the third connecting shaft is connected to the mounting member; the locking member includes a locking portion, a hinge portion and a handle portion, the locking portion is clamped in the locking groove, the two ends of the hinge portion are respectively fixedly connected to the locking portion and the handle portion, and the hinge portion is connected to the third connecting shaft and can rotate around the third connecting shaft.

[0009] In some embodiments, the locking mechanism further includes a fixing block and a first elastic member, wherein the fixing block is fixedly connected to the mounting member and is located on the same side of the locking member as the rotating shaft, and two ends of the first elastic member are respectively connected to the fixing block and the handle portion.

[0010] In some embodiments, the driving mechanism also includes a second elastic member, the connecting member includes a first connecting part, a limiting part and a second connecting part, the two ends of the limiting part are respectively connected to the first connecting part and the second connecting part, the first connecting part and the second connecting shaft are connected, the second connecting part and the end of the pull rope away from the rack are fixedly connected, the second elastic member is sleeved on the second connecting part, and the two ends of the second elastic member respectively contact the mounting member and the limiting part.

[0011] In some embodiments, a accommodating cavity is defined inside the mounting member, an opening communicating with the accommodating cavity is defined at one end of the mounting member close to the bracket, and an operating port communicating with the accommodating cavity is defined on the mounting member; the rack, the first gear, and the second gear are disposed in the accommodating cavity; the second connecting portion has a first end and a second end relative to each other, the first end is located in the accommodating cavity and is fixedly connected to the pull rope, and the second end extends to the outside of the accommodating cavity through the opening and is fixedly connected to the limiting portion; the crank has a third end and a fourth end relative to each other, the third end is fixedly connected to the rotating shaft, and the fourth end extends to the outside of the accommodating cavity through the operating port.

[0012] In some embodiments, the driving mechanism also includes a stop member, which has a stop end; the accommodating cavity has a first inner wall, the rack and the first inner wall are slidably connected and are located between the first gear and the first inner wall; one end of the rack facing the first inner wall is recessed in a direction away from the first inner wall to provide a limiting groove; the stop member is fixedly connected to the mounting member, and the stop end is located in the limiting groove.

[0013] In some embodiments, a guide mechanism is further included, the guide mechanism including a first guide member, a first stopper, a second guide member and a second stopper; the first clamp arm is provided with a first guide slot penetrating therethrough, the first guide slot is located on a side of the first connecting shaft away from the second connecting shaft, the first guide member is passed through the first guide slot, one end of the first guide member is connected to the bracket, the first stopper is connected to the first guide member, and the first clamp arm is located between the bracket and the first stopper;

[0014] The second clamp arm is provided with a second guide slot extending therethrough, the second guide slot is located on the side of the first connecting shaft away from the second connecting shaft, the second guide member is passed through the second guide slot, one end of the second guide member is connected to the bracket, the second limiting member is connected to the end of the second guide member away from the bracket, and the second clamp arm is located between the bracket and the second limiting member.

[0015] The clamps of the utility model embodiment have the following beneficial effects compared with the prior art: by bringing the clamping mechanism close to the article and positioning the article between the first clamping arm and the second clamping arm, and then driving the second connecting shaft away from the first connecting shaft by the driving mechanism, the first connecting rod and the second connecting rod can drive the first clamping arm and the second clamping arm to clamp the article, and the second connecting shaft is at a preset position at this time, and then locking the driving mechanism by the locking mechanism and locking the second connecting shaft at the preset position, the relative distance between the second connecting shaft and the first connecting shaft can be fixed, thereby fixing the clamping force of the first clamping arm and the second clamping arm on the article, and realizing stable clamping of the article by the clamping mechanism; therefore, the clamps provided by the utility model can fix the clamping force of the first clamping arm and the second clamping arm on the article through the mutual cooperation of the connecting rod mechanism, the driving mechanism and the locking mechanism, and have good clamping stability and high safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a clamp provided in Embodiment 1 of the present utility model;

[0017] Figure 2 This is a partial structural schematic diagram of a clamp provided in Embodiment 1 of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the operating member and the locking mechanism provided in the first embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the connection between the clamping mechanism and the connecting rod mechanism provided in the first embodiment of the utility model;

[0020] Figure 5 It is a structural schematic diagram of a connecting piece provided in Embodiment 1 of the present utility model;

[0021] Figure 6 It is a structural schematic diagram of the mounting member provided in the first embodiment of the utility model;

[0022] Figure 7 This is a schematic diagram of the structure of a clamp provided in the second embodiment of the utility model;

[0023] Figure 8 It is a structural schematic diagram of a clamp provided in Embodiment 3 of the present utility model.

[0024] In the figure, 1, clamping mechanism; 11, first clamping arm; 12, second clamping arm; 13, first connecting shaft; 111, first guide slot; 121, second guide slot;

[0025] 2. connecting rod mechanism; 21. first connecting rod; 22. second connecting rod; 23. second connecting shaft;

[0026] 211, first connection end; 212, second connection end; 221, third connection end; 222, fourth connection end;

[0027] 3. driving mechanism; 31. connecting member; 32. mounting member; 33. rack; 34. first gear; 35. operating member; 36. bracket; 37. pull rope; 38. stop member; 39. second elastic member; 381. stop end; 311. first connecting part; 312. limiting part; 313. second connecting part; 320. accommodating cavity; 321. rod body; 322. mounting part; 331. limiting groove; 3 51, rotating shaft; 352, second gear; 353, crank; 3131, first end; 3132, second end; 3201, first cavity; 3202, second cavity; 3211, first part; 3212, second part; 3213, third part; 3531, third end; 3532, fourth end; 32011, opening; 32012, first inner wall; 32021, operation port;

[0028] 4. locking mechanism; 41. locking wheel; 42. third connecting shaft; 43. locking member; 44. fixing block; 45. first elastic member; 411. protrusion; 412. locking groove; 431. locking part; 432. hinge part; 433. handle part;

[0029] 5. Guide mechanism; 51. First guide member; 52. First stop member; 53. Second guide member; 54. Second stop member;

[0030] N. First direction. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0037] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0038] Embodiment 1

[0039] like Figure 1-6As shown, a clamp provided by the first embodiment of the utility model includes a clamping mechanism 1, a connecting rod mechanism 2, a driving mechanism 3 and a locking mechanism 4. The clamping mechanism 1 includes a first clamping arm 11, a second clamping arm 12 and a first connecting shaft 13, the first clamping arm 11 and the second clamping arm 12 are hinged through the first connecting shaft 13, and the first clamping arm 11 and the second clamping arm 12 are arranged in a cross form; the connecting rod mechanism 2 includes a first connecting rod 21, a second connecting rod 22 and a second connecting shaft 23, the second connecting shaft 23 is located on one side of the first connecting shaft 13, the first connecting rod 21 has a first connecting end 211 and a second connecting end 212 opposite to each other, the first connecting end 211 and an end of the first clamping arm 11 close to the second connecting shaft 23 are hinged, The second connecting rod 22 has a third connecting end 221 and a fourth connecting end 222 relative to each other. The third connecting end 221 and an end of the second clamp arm 12 close to the second connecting shaft 23 are hinged, and the second connecting end 212 and the fourth connecting end 222 are hinged through the second connecting shaft 23; the driving mechanism 3 is connected to the second connecting shaft 23 and can drive the second connecting shaft 23 to approach or move away from the first connecting shaft 13; the locking mechanism 4 is connected to the driving mechanism 3; wherein the locking mechanism 4 can lock the driving mechanism 3 so that the driving mechanism 3 fixes the second connecting shaft 23 at a preset position.

[0040] Based on this technical solution, by bringing the clamping mechanism 1 close to the article and making the article located between the first clamping arm 11 and the second clamping arm 12, and then driving the second connecting shaft 23 away from the first connecting shaft 13 through the driving mechanism 3, the first connecting rod 21 and the second connecting rod 22 can drive the first clamping arm 11 and the second clamping arm 12 to clamp the article. At this time, the second connecting shaft 23 is in a preset position, and then the driving mechanism 3 is locked by the locking mechanism 4 and the second connecting shaft 23 is locked in the preset position, so that the relative distance between the second connecting shaft 23 and the first connecting shaft 13 can be fixed, so that the clamping force of the first clamping arm 11 and the second clamping arm 12 on the article can be fixed, and the clamping mechanism 1 can stably clamp the article. Therefore, the clamps provided by the utility model can fix the clamping force of the first clamping arm 11 and the second clamping arm 12 on the article through the mutual cooperation of the connecting rod mechanism 2, the driving mechanism 3 and the locking mechanism 4, and have good clamping stability and high safety and reliability.

[0041] See also Figure 1-3The driving mechanism 3 includes a connecting member 31, a mounting member 32, a rack 33, a first gear 34 and an operating member 35. The connecting member 31 is connected to the second connecting shaft 23. The mounting member 32 is located on the side of the second connecting shaft 23 away from the first connecting shaft 13. The rack 33 is movably connected to the mounting member 32. The rack 33 and the connecting member 31 are fixedly connected. The first gear 34 and the rack 33 cooperate. The operating member 35 is connected to the mounting member 32. The locking mechanism 4 is respectively connected to the mounting member 32 and the operating member 35; wherein the operating member 35 can drive the first gear 34 to rotate around the central axis of the first gear 34 to drive the rack 33 to move along the mounting member 32. In this way, the staff can drive the first gear 34 to rotate through the operating member 35, and the first gear 34 drives the rack 33 to move along the mounting member 32 by cooperating with the rack 33. The mounting member 32 drives the second connecting shaft 23 to approach or move away from the first connecting shaft 13 through the connecting member 31. The rack 33 and the first gear 34 cooperate to form a driving member capable of driving the second connecting shaft 23 to move. The driving member has the advantage of high structural stability.

[0042] The driving mechanism 3 also includes a bracket 36 and a pull rope 37. The bracket 36 is fixedly connected to the mounting member 32, the first connecting shaft 13 is fixedly connected to the bracket 36, and the rack 33 is fixedly connected to the connecting member 31 through the pull rope 37. The bracket 36 is used to fix the first connecting shaft 13 at a specified position and the pull rope 37 is used to make the connecting member 31 and the rack 33 have a preset distance (the length of the pull rope 37), so that the staff can operate the first gear 34 to rotate through the operating member 35 at a position far away from the object, and complete the clamping and fixing of the object by the clamping mechanism 1; the bracket 36 and the pull rope 37 can increase the operating distance of the clamp, so that the clamp can be used for clamping and fixing objects in some specific application scenarios, such as the need to clamp unstable dangerous objects from the box.

[0043] The driving mechanism 3 further comprises a stopper 38 , and the stopper 38 has a stopper end 381 .

[0044] The driving mechanism 3 further includes a second elastic member 39 , and the second elastic member 39 is sleeved on the connecting member 31 .

[0045] See also Figure 1-Figure 2 ,and Figure 5 The connecting member 31 includes a first connecting portion 311, a limiting portion 312 and a second connecting portion 313. The two ends of the limiting portion 312 are respectively connected to the first connecting portion 311 and the second connecting portion 313. The first connecting portion 311 is connected to the second connecting shaft 23. The second connecting portion 313 is fixedly connected to an end of the pull rope 37 away from the rack 33.

[0046] The second elastic member 39 is sleeved on the second connecting portion 313, and the two ends of the second elastic member 39 are respectively in contact with the mounting member 32 and the limiting portion 312. In this way, when the locking mechanism 4 releases the lock on the driving mechanism 3, the elastic force of the second elastic member 39 can drive the connecting member 31 to return to its original position, so that the first connecting shaft 13 and the second connecting shaft 23 are close to each other and the first clamp arm 11 and the second clamp arm 12 release the object. Therefore, the second elastic member 39, the first connecting portion 311, the limiting portion 312 and the second connecting portion 313 can realize the automatic release of the clamp when the driving mechanism 3 is in the unlocked state.

[0047] See also Figure 1-Figure 3 The operating member 35 includes a rotating shaft 351, a second gear 352 and a crank 353. The rotating shaft 351 is rotatably connected to the mounting member 32. The second gear 352 is sleeved and fixed on the rotating shaft 351 and cooperates with the first gear 34. The crank 353 is fixedly connected to the rotating shaft 351 and can drive the rotating shaft 351 to rotate around the central axis of the rotating shaft 351. The locking mechanism 4 is connected to the rotating shaft 351. When it is necessary to clamp and fix an object through the clamping mechanism 1, the staff member shakes the crank 353 to rotate the shaft 351, the shaft 351 drives the second gear 352 to rotate, the second gear 352 drives the first gear 34 to rotate, the first gear 34 drives the rack 33 to move along the mounting member 32, the rack 33 pulls the connecting member 31 to move through the pull rope 37, and the connecting member 31 drives the second connecting shaft 23 away from the first connecting shaft 13, so that the first clamping arm 11 and the second clamping arm 12 clamp and fix the object; similarly, the staff member shakes the crank 353 to make the second connecting shaft 23 close to the first connecting shaft 13, so that the first clamping arm 11 and the second clamping arm 12 can release the object. Therefore, the shaft 351, the second gear 352 and the crank 353 form the operating member 35, and the staff member shakes the crank 353 to drive the clamping mechanism 1 to clamp and fix an object or release an object, which is easy to operate.

[0048] In this embodiment, if Figure 1 As shown, by shaking the crank along the first direction N, the driving mechanism 3 can drive the second connecting shaft 23 and the first connecting shaft 13 to move away from each other, so that the end of the first clamping arm 11 away from the second connecting shaft 23 and the end of the second clamping arm 12 away from the second connecting shaft 23 can move closer to each other and clamp the object between the first clamping arm 11 and the second clamping arm 12. Specifically, the first direction N is a counterclockwise direction.

[0049] In this embodiment, the radius of the second gear 352 is smaller than the radius of the first gear 34. The transmission efficiency is high and the effort is saved.

[0050] See also Figure 1-Figure 3 ,and Figure 5-Figure 6A receiving cavity 320 is defined inside the mounting member 32 , an opening 32011 communicating with the receiving cavity 320 is defined at one end of the mounting member 32 close to the bracket 36 , and an operating port 32021 communicating with the receiving cavity 320 is defined in the mounting member 32 .

[0051] The rack 33 , the first gear 34 and the second gear 352 are disposed in the accommodating chamber 320 . By disposing the rack 33 , the first gear 34 and the second gear 352 in the accommodating chamber 320 , the accommodating chamber 320 can shield and protect them.

[0052] The second connecting portion 313 has a first end 3131 and a second end 3132 relative to each other, the first end 3131 is located in the accommodating cavity 320 and is fixedly connected to the pull rope 37, and the second end 3132 extends to the outside of the accommodating cavity 320 through the opening 32011 and is fixedly connected to the limiting portion 312; the opening 32011 is used and the first end 3131 is arranged in the accommodating cavity 320, so that the accommodating cavity 320 can play a limiting and guiding role during the movement of the connecting member 31.

[0053] The crank 353 has a third end 3531 and a fourth end 3532 opposite to each other, the third end 3531 is fixedly connected to the rotating shaft 351, and the fourth end 3532 extends to the outside of the accommodating chamber 320 through the operating port 32021. The operating port 32021 is adopted and the fourth end 3532 is arranged outside the accommodating chamber 320, so that the staff can shake the crank 353 to achieve the clamping and loosening.

[0054] The accommodating cavity 320 has a first inner wall 32012, and the rack 33 and the first inner wall 32012 are slidably connected and are located between the first gear 34 and the first inner wall 32012; by arranging the rack 33 between the first inner wall 32012 and the first gear 34, the rack 33 can be limited by the first inner wall 32012 and the first gear 34 so that the rack 33 can be movably connected to the mounting member 32.

[0055] One end of the rack 33 facing the first inner side wall 32012 is recessed in a direction away from the first inner side wall 32012 to form a limiting groove 331, and the stopper 38 is fixedly connected to the mounting member 32, and the stopper end 381 is located in the limiting groove 331. By fixing the stopper 38 on the mounting member 32 and arranging the stopper end 381 of the stopper 38 in the limiting groove 331, when the rack 33 moves to a specified position along the first inner side wall 32012, the inner side wall of the limiting groove 331 of the rack 33 will contact the stopper 38, so that the movement of the rack 33 will be blocked by the stopper 38, so that the use of the stopper 38 can limit the moving distance of the rack 33, thereby limiting the opening and closing degree between the first clamp arm 11 and the second clamp arm 12.

[0056] In this embodiment, the stopper 38 is a limiting bolt.

[0057] In this embodiment, there are two stoppers 38, and the two stoppers 38 are arranged at intervals. The two stoppers 38 can respectively limit the minimum relative distance and the maximum relative distance between the rack 33 and the second connecting shaft 23, thereby limiting the maximum opening and closing degree and the minimum opening and closing degree of the first clamp arm 11 and the second clamp arm 12.

[0058] The mounting member 32 includes a rod body portion 321 and a mounting portion 322, one end of the rod body portion 321 is fixedly connected to the bracket 36, the mounting portion 322 is fixedly connected to the rod body portion 321, a first cavity 3201 is defined inside the rod body portion 321, a pull rope 37 is disposed in the first cavity 3201, a second cavity 3202 is defined inside the mounting portion 322, the first cavity 3201 and the second cavity 3202 are interconnected to form a accommodating cavity 320, the opening 32011 is communicated with the first cavity 3201, and the operating port 32021 is communicated with the second cavity 3202. The pull rope 37 is arranged in the first cavity 3201. The shape of the first cavity 3201 can limit the movement path of the pull rope 37, so that the pull rope 37 can realize the movement of the traction connecting member 31 along any movement path and control the first clamping arm 11 and the second clamping arm 12 to clamp or release the object, so that the staff can design the rod body 321 into the required shape to meet the needs of clamping objects in different application scenarios, thereby improving the flexibility of the clamp and expanding the application range of the clamp.

[0059] In this embodiment, the rod body 321 is a linear structure.

[0060] See also Figure 1-Figure 3 The locking mechanism 4 includes a locking wheel 41, a third connecting shaft 42 and a locking member 43; the locking wheel 41 is fixedly connected to the rotating shaft 351, and the locking wheel 41 has a plurality of protrusions 411 distributed around the center of the locking wheel 41, and a locking groove 412 is formed between two adjacent protrusions 411; the third connecting shaft 42 is connected to the mounting member 32; the locking member 43 includes a locking portion 431, a hinge portion 432 and a handle portion 433, the locking portion 431 is clamped in the locking groove 412, and the two ends of the hinge portion 432 are respectively fixedly connected to the locking portion 431 and the handle portion 433, and the hinge portion 432 is connected to the third connecting shaft 42 and can rotate around the third connecting shaft 42. In this way, the staff can operate the handle portion 433 to rotate the hinge portion 432, so as to insert the locking portion 431 into the locking groove 412 and lock the rotating shaft 351, or disengage the locking portion 431 from the locking groove 412 and unlock the rotating shaft 351, which is simple and convenient to operate.

[0061] The locking mechanism 4 further includes a fixing block 44 and a first elastic member 45. The fixing block 44 is fixedly connected to the mounting member 32 and is located on the same side of the locking member 43 as the rotating shaft 351. The two ends of the first elastic member 45 are respectively connected to the fixing block 44 and the handle portion 433. By arranging the fixing block 44 and the rotating shaft 351 on the same side of the locking member 43 and making the two ends of the first elastic member 45 respectively connected to the fixing block 44 and the handle portion 433, when no one operates the locking member 43, the elastic force of the first elastic member 45 will cause the hinge portion 432 to rotate and the locking portion 431 to be stuck in the locking groove 412, thereby completing the automatic locking of the driving mechanism 3 by the locking mechanism 4.

[0062] Embodiment 2

[0063] See also Figure 7 , which is different from the second embodiment, the clamp provided in the second embodiment further includes a guide mechanism 5, which includes a first guide member 51, a first stop member 52, a second guide member 53 and a second stop member 54; the first clamp arm 11 is provided with a first guide slot 111 which penetrates through the first clamp arm 11, the first guide slot 111 is located on the side of the first connecting shaft 13 away from the second connecting shaft 23, the first guide member 51 is penetrated through the first guide slot 111, one end of the first guide member 51 is connected to the bracket 36, and the first stop member 5 2 is connected to the first guide member 51, the first clamp arm 11 is located between the bracket 36 and the first stopper 52; the second clamp arm 12 is provided with a penetrating second guide slot 121, the second guide slot 121 is located on the side of the first connecting shaft 13 away from the second connecting shaft 23, the second guide member 53 is penetrated by the second guide slot 121, one end of the second guide member 53 is connected to the bracket 36, the second stopper 54 is connected to the second guide member 53, and the second clamp arm 12 is located between the bracket 36 and the second stopper 54. The first guide slot 111 and the first guide member 51 can play a guiding role in the movement of the first clamp arm 11, and the second guide slot 121 and the second guide member 53 can play a guiding role in the movement of the second clamp arm 12.

[0064] By using the first stopper 52 to place the first clamp arm 11 between the bracket 36 and the first stopper 52, it is possible to ensure that the first guide member 51 does not separate from the first guide slot 111, so that the first guide member 51 can guide the first clamp arm 11. By using the second stopper 54 to place the second clamp arm between the bracket 36 and the second stopper, it is possible to ensure that the second guide member 53 does not separate from the second guide slot 121, so that the second guide member 53 can guide the second clamp arm 12.

[0065] Embodiment 3

[0066] See also Figure 8, which is different from the second embodiment, the shape of the rod body 321 of the clamp provided in the third embodiment is different from the shape of the rod body 321 of the clamp provided in the second embodiment.

[0067] Specifically, the rod body 321 provided in the second embodiment is a linear structure. The rod body 321 provided in the third embodiment includes a first part 3211, a second part 3212 and a third part 3213 connected in sequence, the first part 3211 is a linear structure, the mounting part 322 is connected to the first part 3211, the second part 3212 is an arc-shaped structure, and the third part 3213 is a linear structure. The extension direction of the first part 3211 and the extension direction of the second part 3212 intersect. The use of the rod body 321 provided in the third embodiment can make it possible for the staff to not face the clamped object directly, and when clamping and fixing objects in some specific application scenarios, such as the need to clamp unstable dangerous objects from the box, etc., it is safer.

[0068] In some other embodiments, the rod body 321 may also be in any other shape, such as a right-angle structure, an acute-angle structure, and an obtuse-angle structure, which is not limited here.

[0069] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A clamp, characterized in that: include: A clamping mechanism (1), the clamping mechanism (1) comprising a first clamping arm (11), a second clamping arm (12) and a first connecting shaft (13), the first clamping arm (11) and the second clamping arm (12) being hingedly connected via the first connecting shaft (13), and the first clamping arm (11) and the second clamping arm (12) being arranged in a cross-shaped manner; A connecting rod mechanism (2), the connecting rod mechanism (2) comprising a first connecting rod (21), a second connecting rod (22) and a second connecting shaft (23), the second connecting shaft (23) being located on one side of the first connecting shaft (13), the first connecting rod (21) having a first connecting end (211) and a second connecting end (212) opposite to each other, the first connecting end (211) and an end of the first clamping arm (11) close to the second connecting shaft (23) being hinged to each other, the second connecting rod (22) having a third connecting end (221) and a fourth connecting end (222) opposite to each other, the third connecting end (221) and an end of the second clamping arm (12) close to the second connecting shaft (23) being hinged to each other, the second connecting end (212) and the fourth connecting end (222) being hinged to each other via the second connecting shaft (23); a driving mechanism (3), the driving mechanism (3) being connected to the second connecting shaft (23) and being capable of driving the second connecting shaft (23) to move closer to or farther from the first connecting shaft (13); A locking mechanism (4), wherein the locking mechanism (4) is connected to the driving mechanism (3); The locking mechanism (4) is capable of locking the driving mechanism (3) to fix the second connecting shaft (23) at a preset position.

2. The clamp according to claim 1, characterized in that The driving mechanism (3) comprises a connecting member (31), a mounting member (32), a rack (33), a first gear (34) and an operating member (35); the connecting member (31) is connected to the second connecting shaft (23); the mounting member (32) is located on a side of the second connecting shaft (23) away from the first connecting shaft (13); the rack (33) is movably connected to the mounting member (32); the rack (33) and the connecting member (31) are fixedly connected; the first gear (34) and the rack (33) cooperate with each other; the operating member (35) is connected to the mounting member (32); and the locking mechanism (4) is respectively connected to the mounting member (32) and the operating member (35); The operating member (35) is capable of driving the first gear (34) to rotate around the central axis of the first gear (34) so ​​as to drive the rack (33) to move along the mounting member (32).

3. The clamp according to claim 2, characterized in that The driving mechanism (3) further comprises a bracket (36) and a pull rope (37); the bracket (36) and the mounting member (32) are fixedly connected; the first connecting shaft (13) and the bracket (36) are fixedly connected; and the rack (33) is fixedly connected to the connecting member (31) via the pull rope (37).

4. The clamp according to claim 3, characterized in that The operating member (35) comprises a rotating shaft (351), a second gear (352) and a crank (353); the rotating shaft (351) is rotatably connected to the mounting member (32); the second gear (352) is sleeved and fixed on the rotating shaft (351) and cooperates with the first gear (34); the crank (353) and the rotating shaft (351) are fixedly connected and can drive the rotating shaft (351) to rotate around the central axis of the rotating shaft (351); and the locking mechanism (4) is connected to the rotating shaft (351).

5. The clamp according to claim 4, characterized in that The locking mechanism (4) comprises a locking wheel (41), a third connecting shaft (42) and a locking member (43); The locking wheel (41) is fixedly connected to the rotating shaft (351), and the locking wheel (41) has a plurality of protrusions (411) distributed around the center of the locking wheel (41), and a locking groove (412) is formed between two adjacent protrusions (411); The third connecting shaft (42) is connected to the mounting member (32); The locking member (43) comprises a locking portion (431), a hinge portion (432) and a handle portion (433); the locking portion (431) is clamped in the locking groove (412); two ends of the hinge portion (432) are respectively fixedly connected to the locking portion (431) and the handle portion (433); the hinge portion (432) is connected to the third connecting shaft (42) and can rotate around the third connecting shaft (42).

6. The clamp according to claim 5, characterized in that The locking mechanism (4) further comprises a fixing block (44) and a first elastic member (45); the fixing block (44) is fixedly connected to the mounting member (32) and is located on the same side of the locking member (43) as the rotating shaft (351); and two ends of the first elastic member (45) are respectively connected to the fixing block (44) and the handle portion (433).

7. The clamp according to any one of claims 4 to 6, characterized in that: The driving mechanism (3) also includes a second elastic member (39); the connecting member (31) includes a first connecting portion (311), a limiting portion (312) and a second connecting portion (313); the two ends of the limiting portion (312) are respectively connected to the first connecting portion (311) and the second connecting portion (313); the first connecting portion (311) is connected to the second connecting shaft (23); the second connecting portion (313) is fixedly connected to one end of the pull rope (37) away from the rack (33); the second elastic member (39) is sleeved on the second connecting portion (313), and the two ends of the second elastic member (39) are respectively in contact with the mounting member (32) and the limiting portion (312).

8. The clamp according to claim 7, characterized in that The mounting member (32) has an accommodating cavity (320) formed therein, an end of the mounting member (32) close to the bracket (36) has an opening (32011) in communication with the accommodating cavity (320), and the mounting member (32) has an operating port (32021) in communication with the accommodating cavity (320); The rack (33), the first gear (34) and the second gear (352) are arranged in the accommodating cavity (320); The second connecting portion (313) has a first end (3131) and a second end (3132) opposite to each other, the first end (3131) is located in the accommodating cavity (320) and is fixedly connected to the pull rope (37), and the second end (3132) extends to the outside of the accommodating cavity (320) through the opening (32011) and is fixedly connected to the limiting portion (312); The crank (353) has a third end (3531) and a fourth end (3532) opposite to each other, the third end (3531) is fixedly connected to the rotating shaft (351), and the fourth end (3532) extends to the outside of the accommodating cavity (320) through the operating port (32021).

9. The clamp according to claim 8, characterized in that The driving mechanism (3) further comprises a stopper (38), wherein the stopper (38) has a stopper end (381); The accommodating cavity (320) has a first inner side wall (32012), and the rack (33) and the first inner side wall (32012) are slidably connected and are located between the first gear (34) and the first inner side wall (32012); One end of the rack (33) facing the first inner side wall (32012) is recessed in a direction away from the first inner side wall (32012) to form a limiting groove (331). The stop member (38) is fixedly connected to the mounting member (32), and the stop end (381) is located in the limiting groove (331).

10. The clamp according to any one of claims 3 to 6, characterized in that: It also includes a guiding mechanism (5), wherein the guiding mechanism (5) includes a first guiding member (51), a first limiting member (52), a second guiding member (53) and a second limiting member (54); The first clamp arm (11) is provided with a first guide slot (111) penetrating therethrough, the first guide slot (111) being located on a side of the first connecting shaft (13) away from the second connecting shaft (23), the first guide member (51) being inserted into the first guide slot (111), one end of the first guide member (51) being connected to the bracket (36), the first stop member (52) being connected to the first guide member (51), and the first clamp arm (11) being located between the bracket (36) and the first stop member (52); The second clamping arm (12) is provided with a penetrating second guide slot (121), the second guide slot (121) is located on the side of the first connecting shaft (13) away from the second connecting shaft (23), the second guide member (53) is penetrated by the second guide slot (121), one end of the second guide member (53) is connected to the bracket (36), the second limiting member (54) is connected to the end of the second guide member (53) away from the bracket (36), and the second clamping arm (12) is located between the bracket (36) and the second limiting member (54).

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