Loosening and clamping two-in-one clamp driving device with replaceable clamp head

Abstract

The utility model discloses a loosening and clamping two-in-one clamp driving device with a replaceable clamp head, which comprises a clamp, a first clamp piece and a second clamp piece of the clamp head are respectively connected with a connecting piece, and the connecting piece of the first clamp piece and the connecting piece of the second clamp piece are rotatably connected through a clamp head pin; the connecting piece of the first forceps piece and the connecting piece of the second forceps piece are movably connected with one end of the forceps head push rod through a displacement conversion structure, the other end of the forceps head push rod is detachably connected with one end of the main push rod, and the forceps head push rod is sleeved with a forceps head sleeve. The tong head sleeve is detachably connected with one end of the main push rod outer sleeve through the joint sleeve, and the main push rod outer sleeve is arranged outside the main push rod in a sleeving mode. The tong head push rod reciprocates along with the main push rod in the length direction of the main push rod, so that the tong head is opened or closed. According to the utility model, the tong heads with different specifications can be quickly replaced according to different use requirements; only the clamp head is consumed as a disposable consumable, so that the use cost is reduced; and the structure is simple and the process is easy to realize.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical device accessories, and particularly relates to a clamping forceps driving device with a two-in-one loosening and clamping function and replaceable forceps heads. Background Art

[0002] A ligation clip is a medical device that is safe, reliable, and has a good hemostatic effect. When in use, it needs to be clamped and closed with the help of an applicator forceps. For example, when the ligation position is incorrect or it needs to be removed, a loosening forceps is required to open the ligation clip and remove it. However, the forceps heads of the current applicator forceps and loosening forceps cannot be flexibly replaced, and it is necessary to frequently replace the appropriate specifications of forceps according to the usage scenario. Therefore, it is necessary to prepare a variety of different specifications of forceps, which not only greatly reduces the usage efficiency but also increases the usage cost, bringing a great economic burden. Therefore, it is necessary to design a combined and economical and practical forceps to meet the usage requirements. Summary of the Utility Model

[0003] The purpose of the utility model is to reduce the usage cost and improve the usage efficiency, thereby providing a clamping forceps driving device with a two-in-one loosening and clamping function and replaceable forceps heads, which can quickly and flexibly replace different specifications of forceps heads according to the usage requirements.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A clamping forceps driving device with a two-in-one loosening and clamping function and replaceable forceps heads, comprising a forceps head. The first forceps blade and the second forceps blade of the forceps head are respectively connected to a connecting piece. The connecting piece of the first forceps blade and the connecting piece of the second forceps blade are rotationally connected through a forceps head pin, and the connecting piece of the first forceps blade and the connecting piece of the second forceps blade are arranged in a forceps head sleeve through the forceps head pin; the connecting piece of the first forceps blade and the connecting piece of the second forceps blade are movably connected to one end of a forceps head push rod through a displacement conversion structure. The other end of the forceps head push rod is detachably connected to one end of a main push rod. A forceps head sleeve is sleeved outside the forceps head push rod; the forceps head sleeve is detachably connected to one end of an outer sleeve of the main push rod through a joint sleeve. The outer sleeve of the main push rod is sleeved outside the main push rod; the forceps head push rod reciprocates along the length direction of the main push rod with the main push rod, so that the forceps head opens or closes.

[0006] As described above, the other end of the forceps head push rod is provided with a T-shaped boss, and the side wall of the main push rod is provided with a T-shaped groove. The T-shaped groove is close to one end of the main push rod. The T-shaped boss of the forceps head push rod is consistent with the shape of the T-shaped groove of the main push rod and is matched in size.

[0007] As described above, the joint sleeve is fixedly connected to the outer sleeve of the main push rod. The inner diameter of the joint sleeve is larger than the outer diameter of the forceps head sleeve; the outer diameter of the forceps head sleeve is larger than the inner diameter of the outer sleeve of the main push rod; the forceps head sleeve is detachably connected to the outer sleeve of the main push rod by being inserted into the joint sleeve and abutting against one end of the outer sleeve of the main push rod.

[0008] As described above, a second jaw positioning sleeve limiting ring, a round hole, and a first jaw positioning sleeve limiting ring are sequentially arranged on the upper edge of the joint sleeve in a direction away from the main push rod outer sleeve. The second jaw positioning sleeve limiting ring and the first jaw positioning sleeve limiting ring are located on the outer side wall of the joint sleeve. The round holes penetrate through the side wall of the joint sleeve. There are multiple round holes, and the multiple round holes are arranged circumferentially along the side wall of the joint sleeve. A ball is respectively arranged in each round hole. The diameter of the round hole at the side wall of the joint sleeve is smaller than the diameter of the ball and larger than the radius of the ball. The depth of the round hole is smaller than the radius of the ball. The ball penetrates through the corresponding round hole.

[0009] A plurality of positioning grooves are arranged circumferentially on the outer side wall of the jaw sleeve, and the positions of the positioning grooves correspond to the positions of the round holes. The diameter of the opening of the positioning groove is smaller than the diameter of the ball.

[0010] A jaw positioning sleeve is sleeved outside the joint sleeve. A positioning ring is arranged in the middle of the inner wall of the jaw positioning sleeve. The positioning ring protrudes towards the central axis direction of the jaw positioning sleeve. One side of the positioning ring is connected to the second jaw positioning sleeve limiting ring of the joint sleeve through a jaw spring.

[0011] When the positioning ring of the jaw positioning sleeve abuts against the first jaw positioning sleeve limiting ring only under the action of the thrust of the jaw spring, the ball abuts against both the positioning ring of the jaw positioning sleeve and the positioning groove at the same time. When the jaw positioning sleeve moves towards the direction close to the main push rod outer sleeve, the ball does not abut against the positioning ring of the jaw positioning sleeve.

[0012] As described above, the displacement conversion structure includes a strip-shaped inclined notch arranged on the connecting piece of the first jaw, a strip-shaped inclined notch arranged on the connecting piece of the second jaw, and a transmission pin arranged at one end of the jaw push rod. The transmission pin is slidably connected to both the inclined notch of the first jaw and the inclined notch of the second jaw at the same time. The transmission pin is located between the connecting piece of the first jaw and the connecting piece of the second jaw. In the projection plane perpendicular to the axis of the transmission pin, the projection of the inclined notch of the connecting piece of the first jaw and the projection of the inclined notch of the connecting piece of the second jaw intersect with each other.

[0013] As described above, the jaw is a loose clamping jaw or a clamping jaw.

[0014] When the jaw sleeve as described above is not connected to the main push rod outer sleeve, the jaw sleeve and the jaw are wrapped with a protective shell.

[0015] As described above, the protective shell is made of plastic or rubber or metal.

[0016] The utility model has the following beneficial effects compared with the prior art:

[0017] 1. The utility model can quickly replace the clamping heads of different specifications according to different usage requirements, and can not only complete the clamping operation but also the loosening operation, avoiding the trouble of preparing multiple clamps during use.

[0018] 2. The utility model only needs to replace the clamping head, and only the clamping head is consumed as a disposable consumable, solving the risk of cross-infection caused by repeated use, greatly reducing the use cost, and having good economic benefits.

[0019] 3. The utility model also wraps a protective shell outside the clamping head, which can not only protect the loosening and bumping of the clamping head part but also prevent bacteria from entering.

[0020] 4. The utility model has a simple structure, good effects, low cost, and is easy to be realized by technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The schematic embodiments and descriptions thereof of the present application are used to explain the present application, and do not constitute an improper limitation to the present application.

[0022] Figure 1 It is a schematic assembly diagram of a clamp with a replaceable clamping head for both loosening and clamping;

[0023] Figure 2 It is an exploded view of the clamp driving device of a clamp with a replaceable clamping head for both loosening and clamping;

[0024] Figure 3 It is a sectional view of the whole clamp with a replaceable clamping head for both loosening and clamping;

[0025] Figure 4 It is a partial enlarged view of the clamp driving device of a clamp with a replaceable clamping head for both loosening and clamping, where I represents the enlarged area and the enlarged ratio is 2:1;

[0026] Figure 5a It is a schematic three-dimensional structure diagram of the protective shell arranged behind the clamping head sleeve;

[0027] Figure 5b It is a schematic structure diagram of the protective shell sleeved on the clamping head sleeve;

[0028] Figure 5c It is a sectional view along line A-A of the protective shell sleeved on the clamping head sleeve;

[0029] Figure 6 It is a schematic structure diagram of the connection between the clamping head and the clamping head push rod.

[0030] Wherein: 1 - first handle, 2 - second handle, 3 - handle base pin, 4 - push rod seat, 5 - first handle base sealing ring, 6 - second handle base sealing ring, 7 - handle base spring, 8 - handle base spring seat, 9 - main push rod, 10 - handle base limit ring, 11 - rotating head, 12 - liquid injection hole, 13 - liquid injection hole sealing ring, 14 - rubber plug, 15 - main push rod outer sleeve, 16 - jaw positioning sleeve, 17 - jaw spring, 18 - ball, 19 - jaw push rod, 20 - first jaw positioning sleeve limit ring, 21 - jaw sleeve, 22 - first jaw piece, 23 - second jaw piece, 24 - jaw pin, 25 - jaw, 2501 - loose clamping jaw, 2502 - clamping jaw, 26 - transmission pin, 27 - second jaw positioning sleeve limit ring, 28 - joint sleeve, 29 - positioning groove, 30 - protective shell. Detailed implementation mode

[0031] For the convenience of those of ordinary skill in the art to understand and implement the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings in the embodiments. It should be understood that the embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "circumferential direction", "left", "right", "top", "bottom", "inside", "outside", etc. is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the subsystems or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model.

[0033] A clamp driving device with a loose clamping and two-in-one replaceable jaw, including a jaw 25, the jaw 25 being a loose clamping jaw 2501 or a clamping jaw 2502; the jaw 25 includes a first jaw piece 22 and a second jaw piece 23, the first jaw piece 22 and the second jaw piece 23 are respectively connected to a connecting piece, the connecting piece of the first jaw piece 22 and the connecting piece of the second jaw piece 23 are rotationally connected through a jaw pin 24, and the connecting piece of the first jaw piece 22 and the connecting piece of the second jaw piece 23 are arranged in a jaw sleeve 21 through the jaw pin 24;

[0034] The connecting pieces of the first clamping piece 22 and the connecting pieces of the second clamping piece 23 are movably connected to one end of the clamping head push rod 19 through a displacement conversion structure. The other end of the clamping head push rod 19 is detachably connected to one end of the main push rod 9. A clamping head sleeve 21 is sleeved outside the clamping head push rod 19. The clamping head sleeve 21 is detachably connected to one end of the main push rod outer sleeve 15 through a joint sleeve 28. The main push rod outer sleeve 15 is sleeved outside the main push rod 9. The clamping head push rod 19 reciprocates along the length direction of the main push rod 9 with the main push rod 9, so that the clamping head 25 opens or closes. The other end of the main push rod outer sleeve 15 is connected to the push rod seat 4, and the push rod seat 4 is fixedly connected to the first handle 1. The other end of the main push rod 9 sequentially passes through the rotating head 11 and the push rod seat 4 and then is movably connected to the second handle 2. The second handle 2 is rotatably connected to the first handle 1 through a handle base pin 3. By controlling the opening and closing of the first handle 1 and the second handle 2, the main push rod 9 reciprocates along the length direction of the main push rod 9. A liquid injection hole 12 can be arranged on the main push rod outer sleeve 15. The liquid injection hole 12 is communicated with the inner cavity of the main push rod outer sleeve 15. A liquid injection hole sealing ring 13 is arranged on the inner edge of the liquid injection hole 12. The liquid injection hole 12 is detachably connected to a rubber plug 14. The liquid injection hole 12 can be sealed by inserting the rubber plug 14 into the liquid injection hole 12. The connection of the other end of the main push rod outer sleeve 15 to the push rod seat 4 and the control of the movement of the main push rod 9 by the first handle 1 and the second handle 2 are all prior arts.

[0035] The displacement conversion structure includes a strip-shaped inclined notch arranged on the connecting piece of the first clamping piece 22, a strip-shaped inclined notch arranged on the connecting piece of the second clamping piece 23, and a transmission pin 26 arranged at one end of the clamping head push rod 19. The transmission pin 26 is simultaneously slidably connected to the inclined notch of the first clamping piece 22 and the inclined notch of the second clamping piece 23. The transmission pin 26 is located between the connecting piece of the first clamping piece 22 and the connecting piece of the second clamping piece 23. In the projection plane perpendicular to the axis of the transmission pin 26, the projection of the inclined notch of the connecting piece of the first clamping piece 22 and the projection of the inclined notch of the connecting piece of the second clamping piece 23 intersect with each other. As Figure 6 shown in, when the clamping head push rod 19 drives the transmission pin 26 to slide in the inclined notch, the first clamping piece 22 and the second clamping piece 23 rotate in opposite directions with the clamping head pin 24 as the rotation axis, so as to realize the opening and closing of the first clamping piece 22 and the second clamping piece 23 (that is, the opening or closing of the clamping head 25). The movement directions of the loose clamping head 2501 and the clamping head 2502 are both: when the clamping head push rod 19 moves away from the main push rod outer sleeve 15 with the main push rod 9 (as Figure 4 from right to left in), the first clamping piece 22 and the second clamping piece 23 move away from each other (that is, the clamping head 25 opens); when the clamping head push rod 19 moves closer to the main push rod outer sleeve 15 with the main push rod 9 (as Figure 4 from left to right in), the first clamping piece 22 and the second clamping piece 23 move closer to each other (that is, the clamping head 25 closes).

[0036] In this embodiment, the other end of the jaw push rod 19 is detachably connected to one end of the main push rod 9 through the following structure: a T-shaped boss is provided at the other end of the jaw push rod 19, and a T-shaped groove is provided on the side wall of the main push rod 9 near one end of the main push rod 9. The T-shaped boss of the jaw push rod 19 is identical in shape and matching in size to the T-shaped groove of the main push rod 9. After the T-shaped boss of the jaw push rod 19 is inserted into the T-shaped groove of the main push rod 9, the jaw push rod 19 can reciprocate along the length direction of the main push rod 9 in the same direction as the main push rod 9.

[0037] In this embodiment, the jaw sleeve 21 is detachably connected to one end of the outer sleeve 15 of the main push rod through the engagement sleeve 28, and is specifically realized through the following structure:

[0038] The engagement sleeve 28 is fixedly connected to the outer sleeve 15 of the main push rod. The inner diameter of the engagement sleeve 28 is larger than the outer diameter of the jaw sleeve 21; the outer diameter of the jaw sleeve 21 is larger than the inner diameter of the outer sleeve 15 of the main push rod, so that the jaw sleeve 21 can be inserted into the engagement sleeve 28 and abutted against one end of the outer sleeve 15 of the main push rod;

[0039] On the joint sleeve 28, in the direction away from the main push rod outer sleeve 15, a second jaw positioning sleeve limiting ring 27, a round hole, and a first jaw positioning sleeve limiting ring 20 are sequentially arranged. Among them, the second jaw positioning sleeve limiting ring 27 and the first jaw positioning sleeve limiting ring 20 are located on the outer side wall of the joint sleeve 28. The round hole penetrates the side wall of the joint sleeve 28, and there are multiple round holes, which are arranged circumferentially along the side wall of the joint sleeve 28. A ball 18 is respectively arranged in each round hole. The diameter of the round hole at the side wall of the joint sleeve 28 is smaller than the diameter of the ball 18 and larger than the radius of the ball 18. The depth of the round hole is smaller than the radius of the ball 18. The ball 18 penetrates the corresponding round hole, and the ball 18 can move radially along the joint sleeve 28 within the round hole. On the circumference of the outer side wall of the jaw sleeve 21, multiple positioning grooves 29 are arranged, and the positions of the positioning grooves 29 correspond to the positions of the round holes. The diameter of the opening of the positioning groove 29 is smaller than the diameter of the ball 18. The joint sleeve 28 is externally sleeved with a jaw positioning sleeve 16. In the middle of the inner wall of the jaw positioning sleeve 16, a positioning ring is arranged, and the positioning ring protrudes towards the central axis direction of the jaw positioning sleeve 16. One side of the positioning ring is connected to the second jaw positioning sleeve limiting ring 27 of the joint sleeve 28 through a jaw spring 17. The other side of the positioning ring abuts against the first jaw positioning sleeve limiting ring 20 only when subjected to the thrust of the jaw spring 17. When the positioning ring of the jaw positioning sleeve 16 abuts against the first jaw positioning sleeve limiting ring 20 only under the thrust of the jaw spring 17, the ball 18 abuts against both the positioning ring of the jaw positioning sleeve 16 and the positioning groove 29 at the same time. Thus, the ball 18 is pressed into the positioning groove 29 of the jaw sleeve 21, fixing the position of the jaw sleeve 21. When the jaw positioning sleeve 16 moves towards the direction close to the main push rod outer sleeve 15 (such as Figure 4 from left to right), the ball 18 does not abut against the positioning ring of the jaw positioning sleeve 16, reducing the pressure of the ball 18 on the positioning groove 29. Thus, the jaw sleeve 21 can be withdrawn from the joint sleeve 28, and then the jaw 25 can be replaced;

[0040] This design facilitates the quick replacement of the jaw 25 and does not require repeated disassembly and installation of the jaw positioning sleeve 16. As Figure 4 shown, when replacing the new jaw 25, first, the main push rod 9 is used to push the jaw push rod 19 in the direction away from the main push rod outer sleeve 15 (such as Figure 4 from right to left), so that the jaw push rod 19 extends out. The T-shaped boss of the jaw push rod 19 is inserted into the T-shaped groove of the main push rod 9. Then, the jaw positioning sleeve 16 is pushed towards the main push rod outer sleeve 15 (such as Figure 4From left to right), the ball 18 is not in contact with the positioning ring of the jaw positioning sleeve 16. Insert the jaw sleeve 21 into the engagement sleeve 28, and then release the jaw positioning sleeve 16. The jaw positioning sleeve 16 moves away from the main push rod outer sleeve 15 under the action of the jaw spring 17. Furthermore, the positioning ring of the jaw positioning sleeve 16 presses down on the ball 18 to form self-locking, achieving the function of fixing the jaw sleeve 21. When disassembling the jaw 25, first push the jaw positioning sleeve 16 towards the main push rod outer sleeve 15 (as Figure 4 From left to right), the ball 18 is not in contact with the positioning ring of the jaw positioning sleeve 16, and then the main push rod 9 pushes the jaw push rod 19 to move away from the main push rod outer sleeve 15 (as Figure 4 From right to left), and the T-shaped boss of the jaw push rod 19 is withdrawn from the T-shaped groove in the main push rod 9.

[0041] To prevent bacteria from adhering to the surface of the jaw 25 and to prevent the parts inside the jaw sleeve 21 (such as the jaw push rod 19 and the jaw pin 24) from loosening or being knocked, when the jaw sleeve 21 is not connected to the main push rod outer sleeve 15, a protective shell 30 is wrapped around the jaw sleeve 21 and the jaw 25. The protective shell 30 is made of plastic or rubber or metal. The protective shell 30 is fixed outside the jaw sleeve 21 only by the tension of the protective shell 30 itself or the friction between the protective shell 30 and the jaw sleeve 21.

[0042] The main body materials of the jaw 25 and the jaw sleeve 21 are made of ABS plastic (acrylonitrile-butadiene-styrene copolymer), which has good comprehensive properties, including extremely high impact toughness, good mechanical properties, simple structure, and low cost.

[0043] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A clamp driving device with a replaceable clamp head that combines loosening and clamping, including a clamp head (25), characterized in that, The first jaw piece (22) and the second jaw piece (23) of the jaw head (25) are respectively connected to a connecting piece. The connecting piece of the first jaw piece (22) and the connecting piece of the second jaw piece (23) are rotationally connected by a jaw head pin (24), and the connecting piece of the first jaw piece (22) and the connecting piece of the second jaw piece (23) are arranged inside a jaw head sleeve (21) through the jaw head pin (24); the connecting piece of the first jaw piece (22) and the connecting piece of the second jaw piece (23) are movably connected to one end of a jaw head push rod (19) through a displacement conversion structure. The other end of the jaw head push rod (19) is detachably connected to one end of a main push rod (9). A jaw head sleeve (21) is sleeved outside the jaw head push rod (19); the jaw head sleeve (21) is detachably connected to one end of an outer sleeve (15) of the main push rod through a joint sleeve (28). The outer sleeve (15) of the main push rod is sleeved outside the main push rod (9); the jaw head push rod (19) reciprocates along the length direction of the main push rod (9) with the main push rod (9), so that the jaw head (25) opens or closes.

2. The clamping drive device with a replaceable clamp head that combines loosening and clamping according to claim 1, characterized in that, A T-shaped boss is provided at the other end of the jaw head push rod (19). A T-shaped groove is provided on the side wall of the main push rod (9). The T-shaped groove is close to one end of the main push rod (9). The T-shaped boss of the jaw head push rod (19) has the same shape and size as the T-shaped groove of the main push rod (9).

3. The clamping drive device with a replaceable clamp head that combines loosening and clamping according to claim 1, characterized in that, The joint sleeve (28) is fixedly connected to the outer sleeve (15) of the main push rod. The inner diameter of the joint sleeve (28) is larger than the outer diameter of the jaw head sleeve (21); the outer diameter of the jaw head sleeve (21) is larger than the inner diameter of the outer sleeve (15) of the main push rod; the jaw head sleeve (21) is detachably connected to the outer sleeve (15) of the main push rod by being inserted into the joint sleeve (28) and abutting against one end of the outer sleeve (15) of the main push rod.

4. The clamp driving device with a replaceable jaw for both loosening and clamping according to claim 3, characterized in that, A second jaw head positioning sleeve limiting ring (27), a round hole and a first jaw head positioning sleeve limiting ring (20) are sequentially arranged on the joint sleeve (28) along the direction away from the outer sleeve (15) of the main push rod. The second jaw head positioning sleeve limiting ring (27) and the first jaw head positioning sleeve limiting ring (20) are located on the outer side wall of the joint sleeve (28). The round hole penetrates through the side wall of the joint sleeve (28). There are multiple round holes, and the multiple round holes are arranged circumferentially on the side wall of the joint sleeve (28). A ball (18) is respectively arranged in each round hole. The diameter of the round hole at the side wall of the joint sleeve (28) is smaller than the diameter of the ball (18) and larger than the radius of the ball (18). The depth of the round hole is smaller than the radius of the ball (18). The ball (18) penetrates through the corresponding round hole. A plurality of positioning grooves (29) are arranged circumferentially on the outer side wall of the jaw head sleeve (21), and the positions of the positioning grooves (29) correspond to the positions of the round holes. The diameter of the opening of the positioning groove (29) is smaller than the diameter of the ball (18). A jaw head positioning sleeve (16) is sleeved outside the joint sleeve (28). A positioning ring is arranged in the middle of the inner wall of the jaw head positioning sleeve (16). The positioning ring protrudes towards the central axis direction of the jaw head positioning sleeve (16). One side of the positioning ring is connected to the second jaw head positioning sleeve limiting ring (27) of the joint sleeve (28) through a jaw head spring (17). When the positioning ring of the jaw positioning sleeve (16) is only under the thrust of the jaw spring (17) and thus abuts against the first jaw positioning sleeve limiting ring (20), the ball (18) abuts against both the positioning ring of the jaw positioning sleeve (16) and the positioning groove (29) at the same time; when the jaw positioning sleeve (16) moves towards the main push rod outer sleeve (15), the ball (18) does not abut against the positioning ring of the jaw positioning sleeve (16).

5. The clamp driving device with a replaceable clamp head integrating loosening and clamping according to claim 1, characterized in that, The displacement conversion structure includes a strip-shaped inclined notch provided on the connecting piece of the first jaw piece (22), a strip-shaped inclined notch provided on the connecting piece of the second jaw piece (23), and a transmission pin (26) provided at one end of the jaw push rod (19); the transmission pin (26) is slidably connected to both the inclined notch of the first jaw piece (22) and the inclined notch of the second jaw piece (23). The transmission pin (26) is located between the connecting piece of the first jaw piece (22) and the connecting piece of the second jaw piece (23). In the projection plane perpendicular to the axis of the transmission pin (26), the projections of the inclined notches of the connecting piece of the first jaw piece (22) and the projections of the inclined notches of the connecting piece of the second jaw piece (23) intersect with each other.

6. The clamp driving device with a replaceable clamp head integrating loosening and clamping according to claim 1, characterized in that, The jaw (25) is a loose clamping jaw (2501) or a clamping jaw (2502).

7. The clamp driving device with a replaceable jaw that combines loosening and clamping according to claim 1, characterized in that, When the jaw sleeve (21) is not connected to the main push rod outer sleeve (15), the jaw sleeve (21) and the jaw (25) are wrapped by a protective shell (30).

8. The clamping drive device with a replaceable clamp head that combines loosening and clamping according to claim 7, characterized in that, The protective shell (30) is made of plastic or rubber or metal.

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