Hinge type large clamping force sensing function centering forceps

Abstract

The application relates to the technical field of heart centering clamp technology, and particularly relates to a hinge type large clamping force sensing function heart centering clamp. The hinge type large clamping force sensing function heart centering clamp comprises an oil cylinder, a clamp table, a first clamp, a second clamp, a first double-end hinge and a second double-end hinge. The clamp table is arranged on the oil cylinder. The first clamp and the second clamp are movably clamped and connected on the clamp table and are respectively arranged on the two sides of the oil cylinder. The two ends of the first double-end hinge are respectively hingedly connected to the first clamp and a piston shaft of the oil cylinder. The two ends of the second double-end hinge are respectively hingedly connected to the second clamp and the piston shaft of the oil cylinder. The piston shaft can drive the first clamp and the second clamp to simultaneously move away from each other or move towards each other through up-down telescopic movement. The hinge transmission pair is adopted to realize synchronous straight line reciprocating drive of the first clamp and the second clamp, compared with a drive mode of frictional inclined surface contact cooperation, which is helpful to reduce part abrasion and energy loss.

Description

Technical Field

[0001] This application relates to the field of centering caliper technology, specifically to a hinged centering caliper with high clamping force sensing function. Background Technology

[0002] The existing technology uses a ramp engagement method to drive the two clamping platforms. A pull plate is installed on the connecting rod of the pull plate piston shaft, and a ramp drive groove is set inside the pull plate. Ramp drive heads are respectively installed on the two clamping platforms. The ramp drive heads are movably mounted in the ramp drive groove to form a movable locking connection. When the pull plate piston shaft moves upward, it drives the two clamping platforms to separate to both sides. When the pull plate piston shaft moves downward, it drives the two clamping platforms to move towards the middle to clamp the workpiece. Problems exist: the transmission of driving force is completed during the sliding process of the two ramps against each other. The ramp drive efficiency is greatly affected by the coefficient of friction and the energy loss is relatively large. Utility Model Content

[0003] This application provides a hinged, high-clamping-force-sensing mandrel clamp to solve all or part of the technical problems described in the background section of this application.

[0004] The innovative idea of ​​this application is to modify the existing inclined plane engagement drive method to use a hinge transmission mechanism. By utilizing the characteristic of the hinge transmission mechanism to complete the bidirectional conversion between linear motion and rotational motion, the clamp can achieve synchronous reciprocating linear drive of the clamp, reduce energy friction loss, and improve the clamping force of the clamping platform through the transmission of hinge rotation torque.

[0005] The solution provided in this application to resolve its technical problem is as follows:

[0006] A hinged, high-clamping-force-sensing, center-aligning clamp includes a hydraulic cylinder, a clamping platform, a first clamp, and a second clamp; characterized in that it further includes a first double-headed hinge and a second double-headed hinge; the clamping platform is mounted on the hydraulic cylinder; the first clamp and the second clamp are movably engaged and connected to the clamping platform and are respectively located on both sides of the hydraulic cylinder; the two ends of the first double-headed hinge are respectively hinged to the piston shaft of the first clamp and the hydraulic cylinder; the two ends of the second double-headed hinge are respectively hinged to the second clamp and the piston shaft of the hydraulic cylinder; the piston shaft can drive the first clamp and the second clamp to move apart or toward each other simultaneously through up-and-down telescopic movement.

[0007] Preferably, the cylinder has a piston chamber inside; the piston shaft includes a piston portion and a connecting rod portion; the piston portion is disposed within the piston chamber, and the connecting rod portion extends upward out of the piston chamber. Further, the top of the piston chamber is sealed but has a piston rod hole, through which the piston shaft connecting rod portion extends out of the piston chamber.

[0008] Preferably, one end of both the first double-ended hinge and the second double-ended hinge is hinged to the extended end of the connecting rod. Further, both ends of the first double-ended hinge and the second double-ended hinge are provided with mating hinge shaft holes.

[0009] Preferably, the hinged high-clamping-force sensing mandrel further includes a synchronous lifting frame; the synchronous lifting frame is provided with a first lifting hinge position and a second lifting hinge position; the synchronous lifting frame is fixedly mounted on the extended end of the connecting rod; one end of the first double-headed hinge and the second double-headed hinge are respectively hinged within the first lifting hinge position and the second lifting hinge position. Further, hinge shaft holes are provided on both sides of the first lifting hinge position and the second lifting hinge position, and mating hinge shaft holes are provided at the connection points of the first double-headed hinge and the second double-headed hinge; the first double-headed hinge and the second double-headed hinge are both hinged together through the mating of the hinge shaft holes, the mating hinge shaft holes, and the shaft components.

[0010] Preferably, the synchronous lifting frame is also provided with a longitudinal limiting shaft; a longitudinal limiting groove is provided on the clamping platform; and the longitudinal limiting shaft is movably assembled in the longitudinal limiting groove. The cooperation between the longitudinal limiting shaft and the longitudinal limiting groove helps to increase the stability of the synchronous lifting frame's vertical telescopic movement.

[0011] Preferably, the piston portion is provided with a sealing groove and a magnetic component groove; the sealing groove is used to assemble a sealing ring, and the magnetic component groove is used to assemble a magnetic component.

[0012] Preferably, the first clamp is provided with a first clamp hinge position, and the second clamp is provided with a second clamp hinge position; the other ends of the first double-ended hinge and the second double-ended hinge are respectively hinged within the first clamp hinge position and the second clamp hinge position. Further, hinge shaft holes are provided on both sides of the first clamp hinge position and the second clamp hinge position, and the connecting parts of the first double-ended hinge and the second double-ended hinge are provided with mating hinge shaft holes; the first double-ended hinge and the second double-ended hinge are both hinged together through the mating of the hinge shaft holes, the mating hinge shaft holes, and the shaft components.

[0013] Preferably, the outer surface of the cylinder is also provided with a sensor slot; the sensor slot is used to assemble a sensor capable of sensing magnetic components.

[0014] Preferably, the clamping platform is also equipped with a top dust cover, a first side dust cover, and a second side dust cover.

[0015] Preferably, the clamping platform is provided with a clamping locking structure; both the first clamp and the second clamp are provided with a clamping platform locking structure.

[0016] Furthermore, the clamping and locking structure includes a locking groove mating edge and a locking edge mating groove; the clamping platform locking structure includes a locking groove and a locking edge; the locking groove mating edge and the locking edge are respectively disposed in the locking groove and the locking edge mating groove.

[0017] Furthermore, the cylinder and / or cylinder base are also provided with hydraulic oil passages and ports for conveying hydraulic oil.

[0018] Beneficial technical effects:

[0019] The hinged high-clamping-force sensing core clamp provided in this application achieves synchronous linear reciprocating motion of the first and second clamps through a hinged transmission pair. Compared with the driving method using friction inclined surface contact, this helps reduce component wear, lower energy loss, and increase clamping force. The use of a top dust cover, a first side dust cover, and a second side dust cover helps prevent debris or dust from entering the core clamp and affecting its normal operation. The use of a detection pair consisting of a sensor located outside the cylinder and a magnetic component located inside the cylinder enables online monitoring of the core clamp's working status, facilitating automated control of the core clamp.

[0020] The technical solution and technical effects of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] Figure 1 This application includes a three-dimensional structural diagram of the heart clamp;

[0022] Figure 2 This application includes a schematic diagram of the function of the cardiac clamp;

[0023] Figure 3 This application provides an exploded view of the first-person perspective components of the cardiac clamp.

[0024] Figure 4 This application provides an exploded view of the second-angle component of the cardiac clamp.

[0025] Figure 5 : Existing schematic diagram of the heart clamp structure;

[0026] Icon description:

[0027] 01-Pull-Pan piston shaft, 02-Pull-Pan, 03-Sloping drive groove, 04-Clamping platform, 05-Sloping drive head;

[0028] 1-Hydraulic cylinder; 11-Piston shaft (111-Piston section; 112-Connecting rod section; 113-Sealing groove; 114-Magnetic component groove); 12-Piston chamber; 13-Sensor groove; 14-Hydraulic cylinder seat;

[0029] 2-Clamping platform; 21-Top dust cover; 22-First side dust cover; 23-Second side dust cover; 24-Clamping clamping structure (241-Clamping groove mating edge; 242-Clamping edge mating groove); 25-Longitudinal limiting groove; 26-Lifting frame accommodating position;

[0030] 3-First clamp, 31-First clamp hinge position, 32-Clamping platform locking structure (321-Locking groove, 322-Locking edge).

[0031] 4-Second clamp; 41-Second clamp hinge position; 42-Clamp pair;

[0032] 5-First double-headed hinge;

[0033] 6-Second double-headed hinge;

[0034] 7-Synchronous lifting frame, 71-First lifting hinge position, 72-Second lifting hinge position, 73-Longitudinal limiting shaft, 74-Connecting rod fixing hole. Detailed Implementation

[0035] Direction convention: In this application, the upper part of the caliper when it is in normal use is referred to as the upward or top direction, and the opposite direction is referred to as the downward or bottom direction.

[0036] Please see Figure 1 and Figure 2 The hinged high-clamping-force sensing mandrel provided in this application includes a hydraulic cylinder 1, a clamping platform 2, a first clamp 3, and a second clamp 4; the clamping platform 2 is fixedly mounted on the hydraulic cylinder 1; the first clamp 3 and the second clamp 4 are movably engaged and connected to the clamping platform 2 and are located on opposite sides of the hydraulic cylinder 1; the piston shaft of the hydraulic cylinder 1 can drive the first clamp 3 and the second clamp 4 to move simultaneously away from each other or towards each other through up-and-down extension and retraction; when moving towards each other, the workpiece is clamped (e.g., ...). Figure 2 (As shown in the dashed box in the middle), the workpiece is released when the separation motion is performed.

[0037] Please see Figure 3 and Figure 4 The hydraulic cylinder 1 includes a piston shaft 11 and a hydraulic cylinder seat 14; the piston shaft 11 includes a piston portion 111 and a connecting rod portion 112; a piston chamber 12 is provided inside the hydraulic cylinder 1; the bottom of the piston chamber 12 is open and sealed by the hydraulic cylinder seat 14; the top of the piston chamber 12 is open but is provided with a piston rod hole; the piston portion 111 of the piston shaft 11 is located inside the piston chamber 12, and the connecting rod portion 112 extends out of the piston chamber 12 through the piston rod hole; a sealing groove 113 is provided on the piston portion 111.

[0038] The clamping table 2 is provided with a clamping engagement structure 24; the clamping engagement structure 24 includes an engagement groove mating edge 241 and an engagement edge mating groove 242; the engagement groove mating edge 241 and the engagement edge mating groove 242 are used to cooperate with the corresponding structures on the first clamp 3 and the second clamp 4 to realize the engagement-type movable connection of the first and second clamps on the clamping table 2.

[0039] The clamping platform 2 has a lifting frame accommodating position 26 in the middle part, which is used to accommodate the synchronous lifting frame 7 and provide lifting space for the synchronous lifting frame 7; the bottom of the clamping platform 2 has a bottom piston rod hole, which extends to the lifting frame accommodating position 26.

[0040] Assembly relationship between hydraulic cylinder 1 and clamping platform 2: clamping platform 2 is fixedly mounted on hydraulic cylinder 1; the protruding end of connecting rod portion 112 of piston shaft 11 extends into lifting frame receiving position 26 through bottom piston rod hole.

[0041] The first clamp 3 is provided with a first clamp hinge position 31, and the second clamp 4 is provided with a second clamp hinge position 41; both the first clamp 3 and the second clamp 4 are also provided with a clamping platform locking structure 32; the clamping platform locking structure 32 includes a locking groove 321 and a locking edge 322; the clamping platform locking structure 32 is used to cooperate with the clamp locking structure 24 on the clamping platform 2 to realize the locking movable connection between the first and second clamps and the clamping platform 2.

[0042] The assembly relationship between the first and second clamps and the clamping table 2: the clamping groove mating edge 241 and the clamping edge 322 are respectively movably set in the clamping groove 321 and the clamping edge mating groove 242; the first clamp 3 and the second clamp 4 are respectively located on both sides of the cylinder piston shaft 11; when the piston shaft 11 moves up and down, the first clamp 3 and the second clamp 4 can move towards each other and away from each other at the same time.

[0043] In a modified embodiment, to improve the smoothness of the reciprocating linear motion of the first and second clamps, a clamping pair 42 is also provided on the first clamp 3 and the second clamp 4; the clamping pair 42 is fixedly disposed on the opposite surfaces of the first clamp 3 and the second clamp 4 and located between the two locking groove mating edges 241 of the clamping table 2; when the second clamp performs linear reciprocating motion, the clamping pair 42 can provide guidance and limitation functions as well as assist in clamping the workpiece.

[0044] Please see Figure 3 and Figure 4 The hinged high clamping force sensing center clamp also includes a first double-headed hinge 5, a second double-headed hinge 6, and a synchronous lifting frame 7.

[0045] Both ends of the first double-headed hinge 5 and the second double-headed hinge 6 are provided with mating hinge shaft holes.

[0046] The synchronous lifting frame 7 is provided with a first lifting hinge position 71, a second lifting hinge position 72, and a connecting rod fixing hole 74; hinge shaft holes are provided on both sides of the first and second lifting hinge positions.

[0047] Assembly relationship between synchronous lifting frame 7 and clamping table 2: synchronous lifting frame 7 is longitudinally movably arranged in lifting frame accommodating position 26 on clamping table, and is fastened to the protruding end of connecting rod of piston shaft 11 through connecting rod fixing hole 74.

[0048] Assembly relationship between the first and second double-headed hinges and the first and second clamps: One end of the first double-headed hinge 5 and the second double-headed hinge 6 are respectively hinged to the first clamp hinge position 31 and the second clamp hinge position 41 through the hinge shaft hole, the mating hinge shaft hole and the shaft component.

[0049] Assembly relationship of the first and second double-headed hinges and synchronous lifting frame 7: The other ends of the first double-headed hinge 5 and the second double-headed hinge 6 are respectively hinged to the first lifting hinge position 71 and the second lifting hinge position 72 through the hinge shaft hole, the fitting hinge shaft hole and the shaft component.

[0050] The cylinder 1 is also equipped with relevant oil circuits and ports for hydraulic oil delivery.

[0051] Principle and Effect Explanation: Hydraulic oil is supplied to the piston chamber 12 from the upper part of the piston section of the piston shaft 11 through the oil port and oil passage; the piston shaft 11 drives the synchronous lifting frame 7 to retract downwards; the first double-headed hinge 5 and the second double-headed hinge 6 rotate simultaneously in opposite directions under the pull of the synchronous lifting frame 7; the first clamp 3 and the second clamp 4 clamp the workpiece by moving in opposite linear directions under the action of the first double-headed hinge 5 and the second double-headed hinge 6 respectively; thus, the vertical lifting motion is first converted into hinge rotation motion, and then the hinge rotation motion is converted into horizontal linear motion of the first and second clamps; the synchronous drive of the first and second clamps is achieved by using a hinge rotating pair connection instead of friction surface contact. The steps and principles for releasing the workpiece are similar and will not be described in detail.

[0052] In a modified embodiment of this application, to increase the stability of the heart clamp operation, a longitudinal limiting groove 25 is also provided on the clamping platform 2, and a longitudinal limiting shaft 73 is also provided on the synchronous lifting frame 7; the longitudinal limiting shaft 73 is movably disposed within the longitudinal limiting groove 25. The cooperation between the longitudinal limiting shaft 73 and the longitudinal limiting groove 25 helps to increase the smoothness of the up-and-down telescopic movement of the synchronous lifting frame 7.

[0053] In another embodiment of this application, the clamping platform 2 is further provided with a top dust cover 21, a first side dust cover 22, and a second side dust cover 23. The top dust cover 21 is used to prevent debris or dust from entering from the top of the lifting frame accommodating position 26; the first side dust cover 22 and the second side dust cover 23 are respectively used to prevent debris or dust from entering from the longitudinal limiting grooves 25 on the front and rear sides of the clamping platform 2.

[0054] In another embodiment of this application, a magnetic component groove 114 is further provided on the piston portion 111 of the piston shaft 11; a sensor groove 13 is further provided on the outer surface of the cylinder 1 and / or cylinder seat 14; a magnetic component is provided in the magnetic component groove 114, and a sensor, such as a Hall sensor, is provided in the sensor groove 13 that can cooperate with the magnetic component to complete the detection work.

[0055] The sensor located outside the cylinder 1 can form a detection pair with the magnetic component located on the piston part 111. In practical applications, multiple Hall sensors can be set to detect the working status of the clamp. For example, a release position sensor SENS01 is set at the upper part of the cylinder 1, and a clamping position sensor SENS02 is set at the bottom of the cylinder 1. When the magnetic component on the piston part 111 reaches the SENS01 position, a stop signal is generated to prevent over-releasing. When the magnetic component on the piston part 111 reaches the SENS02 position, a stop signal is generated to prevent over-clamping.

[0056] The technical solutions and effects of this application have been described in detail above with reference to the accompanying drawings and specific embodiments. It should be noted that those skilled in the art can develop other embodiments based on this. Any simple modifications and equivalent substitutions that do not depart from the innovative concept of this application are covered by this application and fall within the protection scope of this patent.

Claims

1. A hinged, high-clamping-force-sensing, mandrel clamp, comprising a hydraulic cylinder (1), a clamping platform (2), a first clamp (3), and a second clamp (4); characterized in that: It also includes a first double-headed hinge (5) and a second double-headed hinge (6); The clamping platform (2) is mounted on the hydraulic cylinder (1); The first clamp (3) and the second clamp (4) are both movably engaged on the clamping table (2) and are located on both sides of the oil cylinder (1); The two ends of the first double-headed hinge (5) are respectively hinged to the first clamp (3) and the piston shaft (11) of the oil cylinder (1); The two ends of the second double-headed hinge (6) are respectively hinged to the second clamp (4) and the piston shaft (11) of the oil cylinder (1); The piston shaft (11) can drive the first clamp (3) and the second clamp (4) to move away from each other or towards each other through up-and-down telescopic movement.

2. The hinged high-clamping-force sensing centering pliers according to claim 1, characterized in that: The cylinder (1) has a piston chamber (12) inside. The piston shaft (11) includes a piston portion (111) and a connecting rod portion (112). The piston portion (111) is disposed in the piston chamber (12), and the connecting rod portion (112) extends upward out of the piston chamber (12).

3. The hinged high-clamping-force sensing centering pliers according to claim 2, characterized in that: One end of the first double-headed hinge (5) and the second double-headed hinge (6) are both hinged to the extended end of the connecting rod (112).

4. The hinged high-clamping-force sensing centering pliers according to claim 3, characterized in that: The hinged large clamping force sensing function centering clamp also includes a synchronous lifting frame (7). The synchronous lifting frame (7) is provided with a first lifting hinge position (71) and a second lifting hinge position (72). The synchronous lifting frame (7) is fixedly mounted on the extended end of the connecting rod (112); One end of the first double-headed hinge (5) and the second double-headed hinge (6) are respectively hinged in the first lifting hinge position (71) and the second lifting hinge position (72).

5. The hinged high-clamping-force sensing centering pliers according to claim 4, characterized in that: The synchronous lifting frame (7) is also provided with a longitudinal limiting shaft (73). The clamping table (2) is provided with a longitudinal limiting groove (25); The longitudinal limiting shaft (73) is movably fitted into the longitudinal limiting groove (25).

6. The hinged high-clamping-force sensing centering pliers according to claim 2, characterized in that: The piston part (111) is provided with a sealing groove (113) and a magnetic component groove (114). The sealing groove (113) is used to assemble the sealing ring, and the magnetic component groove (114) is used to assemble the magnetic component.

7. The hinged high-clamping-force sensing centering pliers according to claim 1, characterized in that: The first clamp (3) is provided with a first clamp hinge position (31), and the second clamp (4) is provided with a second clamp hinge position (41). The other ends of the first double-headed hinge (5) and the second double-headed hinge (6) are respectively hinged in the first clamp hinge position (31) and the second clamp hinge position (41).

8. The hinged high-clamping-force sensing centering pliers according to claim 1, characterized in that: The outer surface of the oil cylinder (1) is also provided with a sensor groove (13); The sensor slot (13) is used to assemble a sensor capable of sensing magnetic components.

9. The hinged high-clamping-force sensing mandrel according to claim 1, characterized in that: The clamping platform (2) is also equipped with a top dust cover (21), a first side dust cover (22), and a second side dust cover (23).

10. The hinged high-clamping-force sensing centering pliers according to claim 1, characterized in that: The clamping table (2) is provided with a clamping and locking structure (24); Both the first clamp (3) and the second clamp (4) are provided with clamping platform structures (32); The clamping and locking structure (24) includes a locking groove mating edge (241) and a locking edge mating groove (242). The clamping structure (32) includes a clamping groove (321) and a clamping edge (322); The locking groove mating edge (241) and locking edge (322) are respectively set in the locking groove (321) and locking edge mating groove (242).

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