Double-section clamping self-adaptive clamping jaw

Abstract

The invention provides a double-section clamping self-adaptive clamping jaw, and relates to the field of clamping jaws. The double-section clamping self-adaptive clamping jaw comprises a fixing frame, sliding clamping blocks are symmetrically connected into the fixing frame in a sliding mode, the fixing frame and the sliding clamping blocks are fixedly connected through an adjusting telescopic mechanism, and a plurality of sets of telescopic rods capable of being adjusted in a telescopic mode independently are arranged in the middles of the sliding clamping blocks. According to the double-section clamping self-adaptive clamping jaw, the sliding clamping blocks can be controlled to move in the opposite directions through the telescopic mechanism, the touch heads stretch out of the sliding clamping blocks in the clamping process, in more ways when the two sliding clamping blocks get close to each other, any one touch head makes contact with a workpiece firstly, the sliding clamping blocks stop getting close to each other, the telescopic rod works, and the two sliding clamping blocks get close to each other; when the workpiece is clamped, the sliding clamping blocks extend outwards so that the touch heads not making contact with the workpiece can make extrusion contact with the workpiece, after the workpiece is extruded by the multiple touch heads, the telescopic mechanism controls the sliding clamping blocks again to move in the opposite direction to clamp the workpiece, and the problem that in the prior art, the workpiece is not clamped tightly is solved.

Description

Technical Field

[0001] The invention relates to the field of clamping jaws, in particular to a double-stage clamping adaptive clamping jaw. Background Art

[0002] Adaptive grippers are highly intelligent and flexible robot components that are widely used in industrial automation, intelligent manufacturing and other fields. They can automatically adjust the gripping force and gripping position according to different object shapes, sizes and weights, thereby achieving stable grasping and operation of various workpieces.

[0003] The existing patent (CN218138133U) discloses an adaptive clamping device, comprising: an air clamp; a clamping assembly, which is arranged below the air clamp and fixedly connected to the air clamp, and clamps or releases the clamped part under the drive of the air clamp. The clamping assembly is two symmetrically arranged clamps, and each clamp comprises: a fixed rod body, which is fixed on the air clamp; a clamping body, which is arranged on the fixed rod body through an elastic body; wherein the clamping body adaptively adjusts the distance between the two clamping jaws in the clamping assembly under the action of the elastic body, so as to facilitate the clamping of special-shaped clamped parts.

[0004] The device enables the clamping claws to fit with the special-shaped clamping parts when clamping them, and has a buffering effect, thereby avoiding wear on the special-shaped clamping parts, and the entire clamping process is firm and stable. A technical solution for clamping with multiple telescopic parts is disclosed, but the clamping force in this technical solution is provided by the telescopic parts, so the clamping force provided is relatively small, and at the same time, it is impossible to determine whether the clamping parts are in contact with the workpiece. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a dual-stage clamping adaptive clamping jaw, which solves the problem in the above background technology that the clamping force is too small to effectively clamp the workpiece.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a double-stage clamping adaptive clamp, comprising a fixed frame, a sliding clamp block is symmetrically and slidably connected inside the fixed frame, the fixed frame and the sliding clamp block are fixedly connected by an adjustable telescopic mechanism, a plurality of groups of adjustable telescopic rods that can be individually telescopic are arranged in the middle of the sliding clamp block, a touch head is fixedly installed at one end of the telescopic rods close to each other, the touch head comprises a shell, a fixed conductive sheet is fixedly installed inside the shell, a sliding plate is slidably connected inside the shell, a sliding conductive sheet is fixedly installed on a side of the sliding plate close to the fixed conductive sheet, the sliding plate and the fixed conductive sheet are fixedly connected by a reset spring, a top head is fixedly installed on one end of the sliding plate away from the reset spring, and the top head extends to the outside of the shell, the telescopic rod comprises a sleeve, a sliding unit is slidably connected inside the sleeve, an extension rod is fixedly installed on one end of the sliding unit, the extension rod extends to the outside of the sleeve, the touch head is fixedly installed on the outer surface of the extension rod, a magnetic ring is fixedly installed on one end of the sliding unit away from the extension rod, and an electromagnet is fixedly installed on one side of the sleeve close to the magnetic ring.

[0007] Preferably, the telescopic rod includes a fixed cylinder, the interior of the fixed cylinder is slidably connected to a piston rod, the piston rod extends to the outside of the fixed cylinder, a touch head is fixedly installed on the end face of the piston rod, one end of the fixed cylinder is respectively connected to a top conduit and a bottom conduit for circulating hydraulic oil, an electromagnetic control valve is provided in the middle of the top conduit and the bottom conduit, the touch head controls the electromagnetic control valve, and a circulation mechanism is fixedly installed on the outside of the sliding clamp.

[0008] Preferably, the circulation mechanism includes an oil storage tank, which is fixedly mounted on the outside of the sliding clamp, and the oil inlet and outlet ends of the oil storage tank are respectively connected to and penetrated by a circulation pump, and the end of the circulation pump away from the oil storage tank is connected to and penetrated by a multi-way, and the multi-way is connected and penetrated by the top end conduit and the bottom end conduit via a reversing valve.

[0009] Preferably, the reversing valve includes a valve housing, both ends of which are respectively provided with sockets connected to the multi-way and sockets connected to the top conduit and the bottom conduit, a valve core is slidably connected inside the valve housing, an electromagnetic push plate for pushing the valve core to move is provided between the valve core and the valve housing, the valve core includes a direct current tube directly passing through both sides, and a cross-connected flow channel wrapped around the outside of the direct current tube, the flow channel and the direct current tube are alternately connected.

[0010] Preferably, a bearing groove is formed at one end of the sliding clamp blocks away from each other, connecting plates are fixedly installed at the front and rear ends of the outer surface of the telescopic rod, the connecting plate and the telescopic rod are sleeved inside the bearing groove, and a step groove connected to the bearing groove is formed at one end of the sliding clamp blocks close to each other, the sliding clamp blocks and the connecting plate are fixedly connected in the step groove by bolts, and the sliding clamp blocks and the connecting plate are fixedly connected on the other side by a cover plate.

[0011] Preferably, the connecting plate is provided with a plurality of protrusions, and the top end conduit and the bottom end conduit are sleeved inside one of the protrusions.

[0012] Preferably, the adjustable telescopic mechanism is one of an electric telescopic mechanism, a hydraulic telescopic mechanism, an electromagnetic telescopic mechanism or a pneumatic telescopic mechanism.

[0013] Preferably, a limiting guide rail is provided inside the fixing frame, and limiting grooves adapted to the limiting guide rail are provided on both sides of the sliding clamping block.

[0014] Preferably, the liquid inlet end of the oil storage tank is located at the top, and the liquid outlet end of the oil storage tank is located at the bottom on the other side.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The double-stage clamping adaptive clamping jaw can control the sliding clamping blocks to move toward each other through the telescopic mechanism, and make the contact head extend out of the sliding clamping blocks during the clamping process. When the two sliding clamping blocks are approaching each other, any one of the contact heads first contacts the workpiece and the sliding clamping blocks stop approaching each other. At this time, the telescopic rod works and extends outward to make the contact head that is not in contact with the workpiece contact with the workpiece. After the workpiece is squeezed by multiple contact heads, the telescopic mechanism controls the sliding clamping blocks to move toward each other again to complete the clamping of the workpiece, thereby solving the problem of loose clamping of the workpiece in the prior art.

[0017] 2. The double-stage clamping adaptive gripper adopts hydraulic type. When the telescopic rod adopts hydraulic type, hydraulic oil is supplied to the bottom conduit through the circulating pump. When the circulating pump draws oil outward from the top conduit, the telescopic rod extends outward, and the corresponding pipeline is controlled by the electromagnetic control valve to be connected and disconnected, so that it can be extended to a specified length. By connecting with the circulating pump in the reverse direction, the telescopic rod can be retracted, which solves the problem of the workpiece falling off due to loss of external force during the clamping process in the prior art.

[0018] 3. The double-stage clamping adaptive jaws, the reversing valve includes a valve housing, both ends of the valve housing are respectively provided with a socket connected to a multi-way and a socket connected to the top conduit and the bottom conduit, the interior of the valve housing is slidably connected with a valve core, an electromagnetic push plate for pushing the valve core to move is provided between the valve core and the valve housing, the valve core includes a direct current tube directly passing through both sides, and a cross-connected flow channel wrapped around the outside of the direct current tube, the flow channel and the direct current tube are alternately connected, the flow channel is wrapped around the outer surface of the direct current tube and is not connected to the direct current tube, through such an arrangement, it is convenient to switch the flow direction of the hydraulic oil.

[0019] 4. The double-stage clamping adaptive clamp has a bearing groove at one end where the sliding clamp blocks are away from each other, and connecting plates are fixedly installed at the front and rear ends of the outer surface of the telescopic rod, the connecting plate and the telescopic rod are sleeved inside the bearing groove, and a step groove connected to the bearing groove is opened at one end where the sliding clamp blocks are close to each other, the sliding clamp block and the connecting plate are fixedly connected in the step groove by bolts, and the sliding clamp block and the connecting plate are fixedly connected on the other side by a cover plate. Through such an arrangement, the telescopic rod can be stably connected to the sliding clamp block, while ensuring that the telescopic rod is located inside the sliding clamp block without affecting the clamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the sleeve connection of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection of the touch head of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection of the fixed cylinder of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection of the oil storage tank of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection of the reversing valve of the present invention;

[0026] Figure 7 A half-section schematic diagram of the valve core of the present invention;

[0027] Figure 8 A half-section schematic diagram of a sliding clamp of the present invention;

[0028] Fig. 9 This is a schematic diagram of the connection of the sliding clamp block of the present invention.

[0029] In the figure: 1, fixed frame; 2, sliding clamp; 3, telescopic mechanism; 4, telescopic rod; 5, touch head; 501, housing; 502, fixed conductive sheet; 503, sliding plate; 504, sliding conductive sheet; 505, return spring; 506, top head; 401, sleeve; 402, sliding unit; 403, extension rod; 404, magnetic ring; 405, electromagnet; 406, fixed cylinder; 407, piston rod; 408, top catheter ; 409, bottom end conduit; 410, electromagnetic control valve; 411, circulation mechanism; 412, oil storage tank; 413, circulation pump; 414, multi-way; 415, reversing valve; 416, valve housing; 417, socket; 418, valve core; 419, electromagnetic push plate; 420, DC pipe; 421, flow channel; 6, load-bearing groove; 7, connecting plate; 8, step groove; 9, bolt; 10, cover plate; 11, limit guide rail; 12, limit groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0034] like Figure 1-9As shown, a double-stage clamping adaptive clamp comprises a fixed frame 1, wherein the fixed frame 1 is symmetrically slidably connected to a sliding clamp block 2 inside the fixed frame 1, the fixed frame 1 and the sliding clamp block 2 are fixedly connected via an adjustable telescopic mechanism 3, a plurality of groups of adjustable telescopic rods 4 that can be individually telescoped are arranged in the middle of the sliding clamp block 2, a touch head 5 is fixedly installed at one end of the telescopic rods 4 that are close to each other, the touch head 5 comprises a shell 501, a fixed conductive sheet 502 is fixedly installed inside the shell 501, a sliding plate 503 is slidably connected inside the shell 501, a sliding conductive sheet 504 is fixedly installed on one side of the sliding plate 503 close to the fixed conductive sheet 502, and the sliding plate 503 and the fixed conductive sheet 504 are fixedly installed on the sliding plate 503. The plates 502 are fixedly connected by a return spring 505, a head 506 is fixedly installed at one end of the sliding plate 503 away from the return spring 505, and the head 506 extends to the outside of the housing 501, the telescopic rod 4 includes a sleeve 401, a sliding unit 402 is slidably connected inside the sleeve 401, an extension rod 403 is fixedly installed at one end of the sliding unit 402, and the extension rod 403 extends to the outside of the sleeve 401, the touch head 5 is fixedly installed on the outer surface of the extension rod 403, a magnetic ring 404 is fixedly installed at one end of the sliding unit 402 away from the extension rod 403, and an electromagnet 405 is fixedly installed on one side of the sleeve 401 near the magnetic ring 404. In this technical solution, the extension length of the extension rod 403 can be controlled by controlling the power-on time and power-on current of the electromagnet 405 through the electromagnetic control unit, which has the advantage of fast response speed.

[0035] The telescopic rod 4 includes a fixed cylinder 406, which is internally slidably connected to a piston rod 407, which extends to the outside of the fixed cylinder 406, and a touch head 5 is fixedly installed on the end face of the piston rod 407. The two ends of one side of the fixed cylinder 406 are respectively connected to a top conduit 408 and a bottom conduit 409 for circulating hydraulic oil. An electromagnetic control valve 410 is provided in the middle of the top conduit 408 and the bottom conduit 409. The touch head 5 controls the electromagnetic control valve 410, and a circulation mechanism 411 is fixedly installed on the outside of the sliding clamp 2. Sufficient clamping force can be maintained through such hydraulic control, and even if the external power source temporarily fails, the clamped workpiece will not fall off.

[0036] The circulation mechanism 411 includes an oil storage tank 412, which is fixedly installed on the outside of the sliding clamp 2. The oil inlet end and the oil outlet end of the oil storage tank 412 are respectively connected to and penetrated by a circulation pump 413. The end of the circulation pump 413 away from the oil storage tank 412 is connected to and penetrated by a multi-port 414. The multi-port 414 is connected to the top end conduit 408 and the bottom end conduit 409 via a reversing valve 415 and penetrates the circulation pump 413, which is used to extract and recover the hydraulic oil respectively.

[0037] The reversing valve 415 includes a valve housing 416, and the two ends of the valve housing 416 are respectively provided with a socket 417 connected to the multi-way 414 and a socket 417 connected to the top conduit 408 and the bottom conduit 409. The interior of the valve housing 416 is slidably connected with a valve core 418, and an electromagnetic push plate 419 is provided between the valve core 418 and the valve housing 416 to push the valve core 418 to move. The valve core 418 includes a direct current tube 420 that directly passes through both sides, and a flow channel 421 that is wrapped around the outside of the direct current tube 420 and cross-connected. The flow channel 421 and the direct current tube 420 are alternately connected, and the flow channel 421 is wrapped around the outer surface of the direct current tube 420 and is not connected to the direct current tube 420. Through such an arrangement, it is convenient to switch the flow direction of the hydraulic oil.

[0038] A bearing groove 6 is provided at one end of the sliding clamp 2 that is away from each other, and connecting plates 7 are fixedly installed at the front and rear ends of the outer surface of the telescopic rod 4. The connecting plate 7 and the telescopic rod 4 are sleeved in the inside of the bearing groove 6, and a step groove 8 connected to the bearing groove 6 is provided at one end of the sliding clamp 2 that is close to each other. The sliding clamp 2 and the connecting plate 7 are fixedly connected in the step groove 8 by bolts 9, and the sliding clamp 2 and the connecting plate 7 are fixedly connected on the other side by a cover plate 10. Through such an arrangement, the telescopic rod 4 can be stably connected to the sliding clamp 2, while ensuring that the telescopic rod 4 is located inside the sliding clamp 2 without affecting the clamping.

[0039] The connecting plate 7 is provided with a plurality of protrusions, and the top end conduit 408 and the bottom end conduit 409 are sleeved inside one of the protrusions. Such a setting can fix the top end conduit 408 and the bottom end conduit 409 at the edge.

[0040] The adjusting telescopic mechanism 3 is one of an electric telescopic mechanism, a hydraulic telescopic mechanism, an electromagnetic telescopic mechanism or a pneumatic telescopic mechanism. Such a setting can ensure that the adjusting telescopic mechanism 3 can drive the sliding clamps 2 to approach each other.

[0041] A limiting guide rail 11 is arranged inside the fixed frame 1 , and limiting grooves 12 adapted to the limiting guide rail 11 are arranged on both sides of the sliding clamp block 2 . Such an arrangement can ensure the sliding stability of the sliding clamp block 2 .

[0042] The liquid inlet end of the oil storage tank 412 is located at the top, and the liquid outlet end of the oil storage tank 412 is located at the bottom of the other side. This arrangement can facilitate the entry and discharge of hydraulic oil.

[0043] When in use, the telescopic mechanism 3 can control the sliding clamps 2 to move toward each other, and in the process of clamping, the contact heads 5 are extended out of the sliding clamps 2. When the two sliding clamps 2 are approaching each other, any one of the contact heads 5 first contacts the workpiece and the sliding clamps 2 stop approaching each other. At this time, the telescopic rod 4 works by extending outward so that the contact heads 5 that are not in contact with the workpiece are squeezed and touched with the workpiece. After the workpiece is squeezed by multiple contact heads 5, the telescopic mechanism 3 controls the sliding clamps 2 to move toward each other again to complete the clamping of the workpiece, thereby solving the problem of loose clamping of the workpiece in the prior art.

[0044] When the telescopic rod 4 is hydraulic, hydraulic oil is supplied to the bottom conduit 409 through the circulating pump 413. When the circulating pump 413 draws oil outward from the top conduit 408, the telescopic rod 4 extends outward, and the corresponding pipeline is controlled by the electromagnetic control valve 410 to be connected and disconnected, so that it can be extended to a specified length. By connecting with the circulating pump 413 in the reverse direction, the telescopic rod 4 can be retracted, which solves the problem of the workpiece falling off due to the loss of external force during the clamping process in the prior art.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0046] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double-stage clamping adaptive clamping jaw, comprising a fixed frame (1), wherein the fixed frame (1) is internally slidably connected to a sliding clamping block (2), and the fixed frame (1) and the sliding clamping block (2) are fixedly connected via an adjustable telescopic mechanism (3), characterized in that: A plurality of groups of independently extendable and adjustable telescopic rods (4) are arranged in the middle of the sliding clamp block (2), and a contact head (5) is fixedly mounted on one end of the telescopic rods (4) close to each other; The touch head (5) comprises a shell (501), a fixed conductive sheet (502) is fixedly installed inside the shell (501), a sliding plate (503) is slidably connected inside the shell (501), a sliding conductive sheet (504) is fixedly installed on a side of the sliding plate (503) close to the fixed conductive sheet (502), the sliding plate (503) and the fixed conductive sheet (502) are fixedly connected via a return spring (505), a top head (506) is fixedly installed on one end of the sliding plate (503) away from the return spring (505), and the top head (506) extends to the outside of the shell (501); The telescopic rod (4) comprises a sleeve (401), the interior of the sleeve (401) is slidably connected to a sliding unit (402), one end of the sliding unit (402) is fixedly mounted with an extension rod (403), the extension rod (403) extends to the outside of the sleeve (401), the touch head (5) is fixedly mounted on the outer surface of the extension rod (403), one end of the sliding unit (402) away from the extension rod (403) is fixedly mounted with a magnetic ring (404), and a side of the sleeve (401) close to the magnetic ring (404) is fixedly mounted with an electromagnet (405).

2. The dual-stage clamping adaptive clamping jaw according to claim 1, characterized in that: The telescopic rod (4) comprises a fixed cylinder (406), the interior of the fixed cylinder (406) is slidably connected with a piston rod (407), the piston rod (407) extends to the outside of the fixed cylinder (406), the contact head (5) is fixedly installed on the end surface of the piston rod (407), the ends of one side of the fixed cylinder (406) are respectively connected with a top conduit (408) and a bottom conduit (409) for circulating hydraulic oil, the middle parts of the top conduit (408) and the bottom conduit (409) are both provided with an electromagnetic control valve (410), the contact head (5) controls the electromagnetic control valve (410), and a circulation mechanism (411) is fixedly installed on the outside of the sliding clamp (2).

3. The dual-stage clamping adaptive clamping jaw according to claim 2, characterized in that: The circulation mechanism (411) comprises an oil storage tank (412), the oil storage tank (412) being fixedly mounted on the outside of the sliding clamp (2), the oil inlet end and the oil outlet end of the oil storage tank (412) being respectively connected to and penetrated by a circulation pump (413), the end of the circulation pump (413) away from the oil storage tank (412) being connected to and penetrated by a multi-port (414), the multi-port (414) being connected to and penetrated by a top end conduit (408) and a bottom end conduit (409) via a reversing valve (415).

4. The dual-stage clamping adaptive clamping jaw according to claim 3, characterized in that: The reversing valve (415) comprises a valve housing (416), and both ends of the valve housing (416) are respectively provided with a socket (417) connected to the multi-way (414) and a socket (417) connected to the top conduit (408) and the bottom conduit (409). The valve housing (416) is slidably connected with a valve core (418) inside, and an electromagnetic push plate (419) is provided between the valve core (418) and the valve housing (416) to push the valve core (418) to move. The valve core (418) comprises a direct current tube (420) that directly passes through both sides, and a flow channel (421) that is wrapped around the outside of the direct current tube (420) and cross-connected, and the flow channel (421) and the direct current tube (420) are alternately connected.

5. A dual-stage clamping adaptive clamp according to any one of claims 1 to 4, characterized in that: The ends of the sliding clamps (2) that are away from each other are provided with a bearing groove (6); the outer surfaces of the telescopic rods (4) are fixedly provided with connecting plates (7) at both ends thereof; the connecting plates (7) and the telescopic rods (4) are sleeved inside the bearing groove (6); the ends of the sliding clamps (2) that are close to each other are provided with a stepped groove (8) that is communicated with the bearing groove (6); the sliding clamps (2) and the connecting plates (7) are fixedly connected in the stepped groove (8) by bolts (9); and the sliding clamps (2) and the connecting plates (7) are fixedly connected on the other side by a cover plate (10).

6. The dual-stage clamping adaptive clamping jaw according to claim 5, characterized in that: The connecting plate (7) is provided with a plurality of protrusions, and the top end conduit (408) and the bottom end conduit (409) are sleeved inside one of the protrusions.

7. The dual-stage clamping adaptive clamping jaw according to claim 6, characterized in that: The adjustable telescopic mechanism (3) is one of an electric telescopic mechanism, a hydraulic telescopic mechanism, an electromagnetic telescopic mechanism or a pneumatic telescopic mechanism.

8. The dual-stage clamping adaptive clamping jaw according to claim 1, characterized in that: A limiting guide rail (11) is arranged inside the fixed frame (1), and limiting grooves (12) adapted to the limiting guide rail (11) are arranged on both sides of the sliding clamp block (2).

9. The dual-stage clamping adaptive clamping jaw according to claim 3, characterized in that: The liquid inlet end of the oil storage tank (412) is located at the top, and the liquid outlet end of the oil storage tank (412) is located at the bottom on the other side.

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