CN220348440U - A tongs for snatching two piston callipers - Google Patents

Abstract

The present disclosure relates to a grip for gripping a dual piston caliper having a mounting cavity for receiving a brake pad and a piston mounting portion and a brake pad gripping jaw disposed axially on opposite sides of the mounting cavity, the grip including a first tightening mechanism, a second tightening mechanism, and a driving mechanism; the driving mechanism can drive the first tightening mechanism to move towards the brake pad clamping jaw along the axial direction and prop against the brake pad clamping jaw so as to provide a first tightening force for the brake pad clamping jaw; the second tightening mechanism comprises an ejector rod extending along the axial direction, and the driving mechanism can drive the second tightening mechanism to move towards the piston mounting part along the axial direction so that the ejector rod is propped against the piston mounting part to provide a second tightening force opposite to the first tightening force to the piston mounting part; when the first tightening mechanism abuts against the clamping jaw of the brake block and the ejector rod abuts against the mounting part of the piston, the gripper can grip the double-piston caliper from the inside of the mounting cavity of the double-piston caliper. The utility model relates to a tongs can stably snatch double-piston calliper through the mode that the internal stay was propped tightly.

Description

A tongs for snatching two piston callipers

Technical Field

The utility model relates to the field of grabbing devices, in particular to a gripper for grabbing a double-piston caliper.

Background

The double-piston caliper is also called a double-cylinder caliper and is used for braking an automobile, has certain complexity due to the irregular structure of the double-piston caliper, and has two main piston holes, so that the weight of the double-piston caliper is heavier than that of a single-piston caliper, and in machining, how to grasp the double-piston caliper and place the double-piston caliper on equipment of a working procedure to be machined is a difficult problem.

Disclosure of Invention

The utility model aims to solve the technical problem that a double-piston caliper is not easy to stably grasp. The utility model provides a grip for gripping a double-piston caliper, which can internally prop up and tightly press the double-piston caliper to be placed on equipment to be processed.

In order to solve the technical problems, the embodiment of the utility model discloses a gripper for gripping a double-piston caliper, which is provided with a mounting cavity for accommodating a brake pad, a piston mounting part and a brake pad clamping jaw, wherein the piston mounting part and the brake pad clamping jaw are axially arranged on opposite sides of the mounting cavity; the second tightening mechanism comprises an ejector rod extending along the axial direction, and the driving mechanism can drive the second tightening mechanism to move towards the piston mounting part along the axial direction so that the ejector rod is propped against the piston mounting part to provide a second tightening force opposite to the first tightening force to the piston mounting part; when the first tightening mechanism abuts against the clamping jaw of the brake block and the ejector rod of the second tightening mechanism abuts against the mounting part of the piston, the gripper can grip the double-piston caliper from the inside of the mounting cavity of the double-piston caliper.

By adopting the technical scheme, the double-piston caliper can be stably grabbed by the grip through the mode of propping the inner support, so that the double-piston caliper is placed on equipment to be processed.

According to another embodiment of the utility model, the utility model discloses a gripper for gripping a dual-piston caliper, wherein one end of a push rod, which is close to a piston mounting part, comprises spokes arranged along the circumferential direction and used for abutting against the piston mounting part.

According to another specific embodiment of the utility model, the embodiment of the utility model discloses a grip for gripping a double-piston caliper, wherein a step is arranged on a spoke along the axial direction, and the step can be clamped with the inner wall of a piston mounting part.

According to another embodiment of the utility model, the embodiment of the utility model discloses a grip for gripping a double-piston caliper, a through hole is formed in the first tightening mechanism along the axial direction, and a push rod can pass through the through hole.

According to another embodiment of the present utility model, a grip for gripping a dual piston caliper is disclosed, the second tightening mechanism comprising a guide member provided with an accommodation hole in an axial direction, the accommodation hole being axially aligned with the through hole, the ejector pin being able to pass through the accommodation hole.

According to another embodiment of the present utility model, a grip for gripping a dual piston caliper is disclosed, with a guide removably connected to a carrier bar.

According to another embodiment of the utility model, the embodiment of the utility model discloses a grip for gripping a double-piston caliper, the second tightening mechanism comprises a stop piece, the top end of the stop piece is fixedly connected with the guide piece, the stop piece is suspended in the accommodating hole, and an opening is formed in the periphery of the ejector rod and is used for inserting the stop piece.

According to another embodiment of the present utility model, a grip for gripping a dual piston caliper is disclosed, the second tightening mechanism further comprising a spindle rotatably coupled to the guide, and the ejector pin is in clearance fit with the receiving hole, and the stopper is in clearance fit with the opening hole.

According to another embodiment of the utility model, a grip for gripping a dual piston caliper is disclosed, wherein a guide member is sleeved on the circumference of a rotating shaft, the bottom of the rotating shaft has an extension portion extending radially outward along the bottom, and the lower end surface of the guide member is supported by the extension portion.

According to another embodiment of the present utility model, a grip for gripping a dual piston caliper is disclosed, the second tightening mechanism further comprising a connecting member longitudinally positioned between the drive mechanism and the guide member, the connecting member being connected to the drive mechanism and the connecting member being connected to the spindle.

According to another embodiment of the utility model, a gripper for gripping a dual-piston caliper is disclosed, wherein the driving mechanism is a cylinder or a pneumatic gripper.

According to another embodiment of the utility model, a grip for gripping a dual piston caliper is disclosed, wherein the end face of the first tightening mechanism facing the brake pad clamping jaw is provided with at least two adaptive supports.

According to the grip for gripping the double-piston caliper, the grip can stably grip the double-piston caliper in a propping mode through the inner support so as to place the double-piston caliper on equipment to be processed.

Drawings

Fig. 1 shows a schematic view of a dual piston caliper according to the present utility model.

Fig. 2 shows a schematic view of a gripper according to the utility model.

Fig. 3 shows a schematic view of a dual piston caliper with an inner grip stay in place in the present utility model.

Fig. 4 shows a schematic view of the present utility model after the ejector pin and guide are assembled.

Fig. 5 shows a schematic view of the ejector pin in the present utility model.

Fig. 6 shows a schematic view of a first tightening mechanism in the present utility model.

Fig. 7 shows a schematic view of the first tightening mechanism, the guide member and the ejector pin of the present utility model after assembly.

Fig. 8 shows a schematic view of the stop, ejector rod and guide of the present utility model in section along B-B after assembly.

Figure 9 shows a schematic cross-sectional view of the second tightening mechanism along A-A of the present utility model.

Fig. 10 shows a schematic view of a first tightening mechanism of the present utility model fitted with an adaptive support.

Reference numerals illustrate:

a gripper 1 and a double-piston caliper 2;

a first tightening mechanism 11, a second tightening mechanism 12, and a driving mechanism 13;

a through hole 111, a first through hole 111A, a second through hole 111B, an adaptive support 112, a steel ball 1121;

ram 121, first ram 1211, second ram 1212, first spoke 1213, second spoke 1214, first step 1215, second step 1216, first aperture 1217, second aperture 1218;

the guide 122, the accommodation hole 1221, the first accommodation hole 1221A, the second accommodation hole 1221B, the lower end surface 1222;

the stopper 123, the first stopper 1231, the second stopper 1232;

a rotation shaft 124, an extension 1241, a connector 125;

a first base jaw 131, a second base jaw 132;

mounting cavity 21, piston mounting portion 23, first piston mounting portion 231, second piston mounting portion 232, first end surface 2311, second end surface 2321, and brake pad clamping jaw 25.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples. While the description of the utility model will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation. Rather, the purpose of the utility model described in connection with the embodiments is to cover other alternatives or modifications, which may be extended by the claims based on the utility model. The following description contains many specific details for the purpose of providing a thorough understanding of the present utility model. The utility model may be practiced without these specific details. Furthermore, some specific details are omitted from the description in order to avoid obscuring the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

It should be noted that in this specification, like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present embodiment, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "bottom", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present utility model.

The terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1, a double-piston caliper 2, also called a double-cylinder caliper, is used for braking of an automobile, the double-piston caliper 2 has a mounting cavity 21 for accommodating a brake pad (not shown in the drawing), and a piston mounting portion 23 and a brake pad holding jaw 25 disposed on opposite sides of the mounting cavity 21 in an axial direction (AX direction shown in fig. 1), and an end face of the brake pad holding jaw 25 abuts against the brake pad when the automobile is braked. The piston mounting portion 23 includes a first piston mounting portion 231 and a second piston mounting portion 232, and typically, a first end surface 2311 of the first piston mounting portion 231 and a second end surface 2321 of the second piston mounting portion 232 are on the same plane. Due to the irregular structure of the dual piston caliper 2, which has a certain complexity, and the dual piston caliper 2 has a heavier weight than the single piston caliper, in the machining process, a special grip 1 as shown in fig. 2 needs to be designed for clamping and grabbing.

The present embodiment proposes a gripper 1 for gripping a dual-piston caliper 2, comprising a first tightening mechanism 11, a second tightening mechanism 12 and a driving mechanism 13, the driving mechanism 13 being located above the dual-piston caliper 2.

In the present embodiment, referring to fig. 2 and 3, the driving mechanism 13 is a gas claw including a first base claw 131 and a second base claw 132, the first base claw 131 and the second base claw 132 being movable in the axial direction (AX direction shown in fig. 2).

The driving mechanism 13 is connected to the first tightening mechanism 11 through a first base jaw 131, and under the action of the driving mechanism 13, the first tightening mechanism 11 moves toward the brake pad clamping jaw 25 in the axial direction (AX direction shown in fig. 3) and abuts against the brake pad clamping jaw 25, and provides a first tightening force to the brake pad clamping jaw 25. In some embodiments, the first tightening mechanism 11 abuts an end face of the brake pad clamping jaw 25 facing the mounting cavity 21 to provide a first tightening force to the brake pad clamping jaw 25.

Referring to fig. 1, 2, 3 and 4, the second tightening mechanism 12 includes a jack 121 extending in the axial direction (AX direction shown in fig. 3 or 4), specifically, the second tightening mechanism 12 includes a first jack 1211 extending in the axial direction and a second jack 1212 extending in the axial direction, respectively, and the first jack 1211 and the second jack 1212 are disposed symmetrically in the axial direction. The driving mechanism 13 is connected with the second tightening mechanism 12 through the second base claw 132, and under the action of the driving mechanism 13, the second tightening mechanism 12 is driven to move towards the first piston mounting part 231 along the axial direction so that the first ejector rod 1211 abuts against the first piston mounting part 231, specifically the first ejector rod 1211 abuts against the first end face 2311 of the first piston mounting part 231, so as to provide a second tightening force opposite to the first tightening force direction for the first piston mounting part 231; under the action of the driving mechanism 13, the second ejector rod 1212 is also synchronously abutted against the second mounting portion 232, specifically, the second ejector rod 1212 is synchronously abutted against the second end surface 2321 of the second mounting portion 232, so as to provide a second tightening force to the second piston mounting portion 232, which is opposite to the first tightening force.

When the first tightening mechanism 11 abuts against the brake pad clamping jaw 25 and the first ejector rod 1211 of the second tightening mechanism 12 abuts against the first piston mounting portion 231 and the second ejector rod 1212 of the second tightening mechanism 12 abuts against the second piston mounting portion 232, the hand grip 1 can firmly grip the dual-piston caliper 2 from inside the mounting cavity 21 of the dual-piston caliper 2.

In other possible embodiments, the drive mechanism 13 may also be a cylinder (not shown). Similarly, the first tightening mechanism 11 and the second tightening mechanism 12 are respectively connected with the air cylinders, and the first tightening mechanism 11 and the second tightening mechanism 12 are respectively moved in the axial direction under the control of the air cylinders.

The working flow is as follows:

the first tightening mechanism 11 moves axially towards the brake pad clamping jaw 25 under the action of the driving mechanism 13 and abuts against the brake pad clamping jaw 25, providing a first tightening force to the brake pad clamping jaw 25.

The second tightening mechanism 12 drives the first ejector rod 1211 to move axially toward the first piston mounting portion 231 and abut against the first end surface 2311 of the first piston mounting portion 231 under the action of the driving mechanism 13, and the second ejector rod 1212 moves axially toward the second piston mounting portion 232 and abuts against the second end surface 2321 of the second piston mounting portion 232 in synchronization, and the first ejector rod 1211 and the second ejector rod 1212 both provide a second tightening force to the second piston mounting portion 232 opposite to the first tightening force. So that the double-piston caliper 2 is propped up by the inner support, the gripper 1 can clamp and grasp the double-piston caliper 2 from the inside of the installation cavity 21 of the double-piston caliper 2 to place it on the equipment to be processed.

In practical operation, the first bracing mechanism 11 may abut against the brake pad clamping jaw 25, while the first ejector rod 1211 abuts against the first end surface 2311, and the second ejector rod 1212 abuts against the second end surface 2321; the first jack 1211 and the second jack 1212 may respectively abut against the first end surface 2311 and the second end surface 2321 after the first tightening mechanism 11 abuts against the brake pad clamping jaw 25; the first supporting rod 1211 and the second supporting rod 1212 may respectively abut against the first end surface 2311 and the second end surface 2321, and then the first tightening mechanism 11 may abut against the brake pad clamping jaw 25.

In other possible embodiments, referring to fig. 3 and 4, an end of the first rod 1211 adjacent to the first piston mounting portion 231 includes a first spoke 1213 disposed in a circumferential direction (T direction shown in fig. 4), and an end of the second rod 1212 adjacent to the second piston mounting portion 232 includes a second spoke 1214 disposed in the circumferential direction. The number of the first spokes 1213 and the second spokes 1214 in the present embodiment is 3, and in other embodiments, the number of the first spokes 1213 and the second spokes 1214 is not limited to 3, but may be 3 or more. The first jack 1211 and the second jack 1212 are synchronously moved in the axial direction toward the piston mounting portion 23 by the driving mechanism 13, so that the first spoke 1213 abuts against the first piston mounting portion 231 and the second spoke 1214 abuts against the second piston mounting portion 232.

In other possible embodiments, referring to fig. 3 and 5, the first spoke 1213 is provided with a first step 1215 along the axial direction (AX direction shown in fig. 3 or 5), the second spoke 1214 is provided with a second step 1216 along the axial direction, and when the first push rod 1211 and the second push rod 1212 are synchronously moved along the axial direction toward the piston mounting portion 23 under the driving of the driving mechanism 13, the first spoke 1213 abuts against the first piston mounting portion 231, the first step 1215 is engaged with the inner wall of the first piston mounting portion 231, and when the second spoke 1214 abuts against the second piston mounting portion 232, the second step 1216 is engaged with the inner wall of the second piston mounting portion 232. In other words, at least a portion of the first step 1215 and the second step 1216 are located in the piston holes of the first piston mounting portion 231 and the second piston mounting portion 232, respectively, and the end surfaces of the first spoke 1213 and the second spoke 1214 toward the first piston mounting portion 231 and the second piston mounting portion 232 abut the first end surface 2311 and the second end surface 2321, respectively. Due to the arrangement of the first step 1215 and the second step 1216, the first step 1215 provides a supporting force for the first piston mounting portion 231, and the second step 1216 provides a supporting force for the second piston mounting portion 232, so that the first push rod 1211 is not easy to separate from the first piston mounting portion 231, and meanwhile, the second push rod 1212 is not easy to separate from the second piston mounting portion 232, so that the double-piston caliper 2 is more stable to prop up and clamp in the gripper 1.

In other possible embodiments, referring to fig. 6 and 7, the first tightening mechanism 11 is provided with a through hole 111 in the axial direction (AX direction shown in fig. 6 or 7), the through hole 111 includes a first through hole 111A and a second through hole 111B, and the first through hole 111A and the second through hole 111B are disposed symmetrically in the axial direction. The first rod 1211 passes through the first through hole 111A, the second rod 1212 passes through the second through hole 111B, and the first tightening mechanism 11 is sleeved on the outer circumferences (T direction shown in fig. 7) of the first rod 1211 and the second rod 1212, so that the first tightening mechanism 11 moves along the outer circumferences of the first rod 1211 and the second rod 1212 under the driving of the driving mechanism 13. The first tightening mechanism 11 is sleeved on the peripheries of the first ejector rod 1211 and the second ejector rod 1212, so that the first ejector rod 1211 and the second ejector rod 1212 are located at the same height, and the first ejector rod 1211 and the second ejector rod 1212 are conveniently located.

In other possible embodiments, referring to fig. 4, the second tightening mechanism 12 further includes a guide 122, the guide 122 is provided with a receiving hole 1221 in an axial direction (AX direction shown in fig. 4), the receiving hole 1221 includes a first receiving hole 1221A and a second receiving hole 1221B, the first receiving hole 1221A and the second receiving hole 1221B are disposed symmetrically in the axial direction, and the first receiving hole 1221A is disposed in axial alignment with the first through hole 111A, and the second receiving hole 1221B is disposed in axial alignment with the second through hole 111B. The alignment does not require the receiving hole 1221 to be as large as the aperture of the through hole 111, but only requires the first receiving hole 1221A to be on the same axis as the center of the first through hole 111A, and also requires the second receiving hole 1221B to be on the same axis as the center of the second through hole 111B. The receiving hole 1221 may extend through the guide 122 in the axial direction, or may not extend through the guide 122 in the axial direction. The first rod 1211 passes through the first receiving hole 1221A, the second rod 1212 passes through the second receiving hole 1221B, and the establishment of the first receiving hole 1221A and the second receiving hole 1221B also facilitates positioning the first rod 1211 and the second rod 1212.

The guide 122 is detachably connected to the first rod 1211 and the guide 122 is detachably connected to the second rod 1212 by a bolt or screw, which is not limited herein.

Specifically, referring to fig. 5 and 8, the second tightening mechanism 12 further includes a stopper 123 extending in the longitudinal direction (the B-B direction shown in fig. 8 or the B-B direction shown in fig. 5), and specifically the second tightening mechanism 12 includes a first stopper 1231 and a second stopper 1232 extending in the longitudinal direction. The top ends of the first and second stoppers 1231 and 1232 are fixedly connected to the guide 122, respectively, such that the first stopper 1231 is suspended in the first receiving hole 1221A and the second stopper 1232 is suspended in the second receiving hole 1221B (see fig. 7). The top end of the first stop member 1231 or the top end of the second stop member 1232 may be fixedly connected to the guide member 122 by a clamping connection or a threaded connection, which is not limited herein. The first ejector rod 1211 has a first opening 1217 on its outer periphery, and the second ejector rod 1212 has a second opening 1218 on its outer periphery, the first opening 1217 being configured to receive the first stopper 1231, and the second opening 1218 being configured to receive the second stopper 1232. The first opening 1217 may extend through the first stem 1211 in the longitudinal direction, or may not extend through the first stem 1211 in the longitudinal direction; the second opening 1218 may extend longitudinally through the second mandrel 1212 or may not extend longitudinally through the second mandrel 1212. At this time, the first push rod 1211 is detachably attached to the guide 122, and likewise, the second push rod 1212 is detachably attached to the guide 122.

Referring to fig. 3, fig. 4, and fig. 5, when the first ejector rod 1211 and the second ejector rod 1212 are driven by the driving mechanism 13 to move synchronously along the direction of the piston mounting portion 23, specifically, the driving mechanism 13 drives the guide member 122 of the second tightening mechanism 12 to move, the guide member 122 drives the first stop member 1231 and the second stop member 1232 to move along the direction of the piston mounting portion 23, the first stop member 1231 drives the first ejector rod 1211 to move along the direction of the first piston mounting portion 231, and the second stop member 1232 drives the second ejector rod 1212 to move along the direction of the second piston mounting portion 232.

Referring to fig. 9, the second tightening mechanism 12 further includes a rotation shaft 124 rotatably connected to the guide 122, and in combination with fig. 7, the first push rod 1211 is in clearance fit with the first receiving hole 1221A, and the second push rod 1212 is in clearance fit with the second receiving hole 1221B, that is, the rod diameter of the first push rod 1211 is smaller than the aperture of the first receiving hole 1221A, and the rod diameter of the second push rod 1212 is smaller than the aperture of the second receiving hole 1221B. For example, the first and second ejector pins 1211 and 1212 have a pin diameter of 20mm, and the first and second accommodation holes 1221A and 1221B have a hole diameter of 21mm. Referring again to fig. 5, the first stop 1231 is in clearance fit with the first aperture 1217 and the second stop 1232 is in clearance fit with the second aperture 1218, i.e., the diameter of the first stop 1231 is smaller than the aperture of the first aperture 1217 and the diameter of the second stop 1232 is smaller than the aperture of the second aperture 1218. For example, the apertures of the first opening 1217 and the second opening 1218 are 9mm, and the diameters of the first stopper 1231 and the second stopper 1232 are 8mm.

The benefit of this design of the second tightening mechanism 12 is that it solves the following difficulties encountered in operation:

in a normal case, the first end surface 2311 of the first piston attachment portion 231 is on the same plane as the second end surface 2321 of the second piston attachment portion 232. However, even when there is a design error in the dual-piston caliper 2, the first end surface 2311 of the first piston attachment portion 231 and the second end surface 2321 of the second piston attachment portion 232 cannot be located on the same plane.

In this case, in the process that the first ejector rod 1211 and the second ejector rod 1212 are driven by the driving mechanism 13 to synchronously move along the axial direction towards the piston mounting portion 23, the first ejector rod 1211 and the first end surface 2311 are often contacted and tightly pressed, and the second ejector rod 1212 and the second end surface 2321 are not contacted, so that the gripper 1 cannot support the dual-piston caliper 2; or when the second push rod 1212 and the second end surface 2321 have contacted and pressed tightly, but the first push rod 1211 and the first end surface 2311 have not contacted, the grip 1 cannot support the dual-piston caliper 2.

For example, when the first jack 1211 moves in the axial direction toward the first piston mounting portion 231 and abuts against the first end surface 2311, the second jack 1212 has not abutted against the second end surface 2321 yet. However, due to the existence of the rotation shaft 124, the first ejector rod 1211 is in clearance fit with the first accommodating hole 1221A, the second ejector rod 1212 is in clearance fit with the second accommodating hole 1221B, the first stopper 1231 is in clearance fit with the first opening 1217, and the second stopper 1232 is in clearance fit with the second opening 1218, the second ejector rod 1212 may continue to move axially toward the second piston portion 232 until the second ejector rod 1212 abuts against the second end surface 2321 under the action of the driving mechanism 13, and at the same time, the guide member 122, the first stopper 1231 and the second stopper 1232 perform synchronous rotational movement, so that the second ejector rod 1212 may also abut against the second piston mounting portion 232.

Alternatively, when the second ram 1212 moves in the axial direction toward the second piston mounting portion 232 and abuts against the second end surface 2321, the first ram 1211 does not abut against the first end surface 2311 yet, and the grip 1 cannot grip the dual-piston caliper 2. However, due to the existence of the rotation shaft 124, the first ejector rod 1211 is in clearance fit with the first accommodating hole 1221A, the second ejector rod 1212 is in clearance fit with the second accommodating hole 1221B, the first stopper 1231 is in clearance fit with the first opening 1217, and the second stopper 1232 is in clearance fit with the second opening 1218, the first ejector rod 1211 may continue to move axially toward the first piston portion until the first ejector rod 1211 abuts against the first end surface 2311 under the action of the driving mechanism 13, and at the same time, the guide 122, the first stopper 1231 and the second stopper 1232 synchronously perform rotational movement, so that the first ejector rod 1211 also abuts against the first piston mounting portion 231.

In one possible embodiment, referring to fig. 9, the guide member 122 is sleeved on the circumference of the rotating shaft 124, the bottom of the rotating shaft 124 has an extension part 1241 extending radially outwards along the bottom, and the lower end surface 1222 of the guide member 122 is supported by the extension part 1241, so as to facilitate the rotation of the guide member 122 around the rotating shaft 124.

In one possible embodiment, referring to fig. 3 and 9, the second tightening mechanism 12 further includes a connecting member 125, the connecting member 125 being longitudinally located between the driving mechanism 13 and the guide 122, the connecting member 125 being connected to the driving mechanism 13, and the connecting member 125 being connected to the rotation shaft 124. In the present embodiment, the connecting member 125 is connected to the driving mechanism 13 in the longitudinal direction (A-A direction shown in fig. 9), specifically, the connecting member 125 and the driving mechanism 13 may be fixed together by bolts (not shown in the drawings), but the connection manner of the connecting member 125 and the driving mechanism 13 is not limited to the bolt connection, and the connecting member 125 is connected to the rotating shaft 124 in the longitudinal direction, and illustratively, the rotating shaft 124 is partially clamped with the connecting member 125.

In summary, although the first end surface 2311 of the first piston mounting portion 231 and the second end surface 2321 of the second piston mounting portion 232 cannot be located on the same plane due to the design error of the dual-piston caliper 2. However, due to the presence of the rotation shaft 124, the first ejector rod 1211 being in a clearance fit with the first receiving hole 1221A, the second ejector rod 1212 being in a clearance fit with the second receiving hole 1221B, and the first stopper 1231 being in a clearance fit with the first opening 1217, the second stopper 1232 being in a clearance fit with the second opening 1218, it may still occur that in this case the first tightening mechanism 11 abuts against the brake pad clamping jaw 25 and the first ejector rod 1211 of the second tightening mechanism 12 abuts against the first piston mounting portion 231, the second ejector rod 1212 of the second tightening mechanism 12 abuts against the second piston mounting portion 232, the gripper 1 may likewise grasp the dual-piston caliper 2 having this error from inside the mounting cavity 21 of the dual-piston caliper 2.

The working flow is as follows:

the first tightening mechanism 11 moves towards the brake pad clamping jaw 25 along the axial direction under the action of the driving mechanism 13, and abuts against the brake pad clamping jaw 25;

when the first ram 1211 and the second ram 1212 are driven by the driving mechanism 13 to move in the axial direction toward the piston mounting portion 23 synchronously, and the first ram 1211 and the first piston mounting portion 231 are tightly pushed, the second ram 1212 can continue to move toward the second piston mounting portion 232 under the driving of the driving mechanism 13, and the second ram 1212 moves toward the second piston mounting portion 232 while the guide 122, the first stopper 1231 and the second stopper 1232 synchronously perform a rotational movement, so that the second ram 1212 and the second piston mounting portion 232 are tightly pushed.

Or, the first tightening mechanism 11 moves towards the brake pad clamping jaw 25 along the axial direction under the action of the driving mechanism 13, and abuts against the brake pad clamping jaw 25;

when the second ram 1212 is pressed against the second piston mounting portion 232 while the first ram 1211 and the second ram 1212 are synchronously moved in the axial direction toward the piston mounting portion 23 under the driving of the driving mechanism 13, the first ram 1211 may continue to move toward the first piston mounting portion 231 under the driving of the driving mechanism 13, and the guide 122, the first stopper 1231, and the second stopper 1232 synchronously perform a rotational movement while the first ram 1211 moves toward the first piston mounting portion 231, so as to press the first ram 1211 against the first piston mounting portion 231.

In a possible embodiment, the end face of the first tightening mechanism 11 facing the brake pad holding jaw 25 is provided with an adaptive support 112.

Referring to fig. 10, a rotatable steel ball 1121 is disposed in the adaptive support 112, and the top of the steel ball 1121 (the top is understood to be the surface where the steel ball 1121 contacts the end surface of the brake pad clamping jaw 25) is flattened to adapt to the end surface of the brake pad clamping jaw 25, so that the steel ball 1121 can rotate to make the top of the steel ball 1121 completely contact the end surface of the brake pad clamping jaw 25, and the grip 1 is enabled to grip the dual-piston caliper 2 more stably.

The grip 1 provided by the utility model can stably grip the double-piston caliper 2 in a propping mode by the inner support so as to place the double-piston caliper on equipment to be processed.

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the utility model with reference to specific embodiments, and it is not intended to limit the practice of the utility model to those descriptions. Various changes in form and detail may be made therein by those skilled in the art, including a few simple inferences or alternatives, without departing from the spirit and scope of the present utility model.

Claims (12)

1. A gripper for gripping a dual-piston caliper is characterized in that the dual-piston caliper is provided with a mounting cavity for accommodating a brake pad, a piston mounting part and a brake pad clamping jaw, wherein the piston mounting part and the brake pad clamping jaw are axially arranged on opposite sides of the mounting cavity, the gripper comprises a first tightening mechanism, a second tightening mechanism and a driving mechanism,

the driving mechanism can drive the first tightening mechanism to move towards the brake pad clamping jaw along the axial direction and prop against the brake pad clamping jaw so as to provide a first tightening force for the brake pad clamping jaw;

the second tightening mechanism comprises an ejector rod extending along the axial direction, and the driving mechanism can drive the second tightening mechanism to move towards the piston mounting part along the axial direction so that the ejector rod abuts against the piston mounting part to provide a second tightening force to the piston mounting part, wherein the second tightening force is opposite to the first tightening force;

when the first tightening mechanism abuts against the clamping jaw of the brake block and the ejector rod of the second tightening mechanism abuts against the mounting portion of the piston, the gripper can grip the dual-piston caliper from the inside of the mounting cavity of the dual-piston caliper.

2. Grip for gripping a dual piston caliper according to claim 1, characterized in that the end of the carrier rod adjacent the piston mounting includes circumferentially arranged spokes for abutment against the piston mounting.

3. Grip for gripping a dual piston caliper according to claim 2, characterized in that the spokes are provided with steps in the axial direction, which steps can be snapped with the inner wall of the piston mounting.

4. Grip for gripping a dual piston caliper according to claim 1, characterized in that said first tightening means is provided with a through hole in the axial direction, through which said ejector rod can pass.

5. Grip for gripping a dual piston caliper according to claim 4, characterized in that said second tightening mechanism includes a guide member provided with an axially receiving hole axially aligned with said through hole, said ejector pin being able to pass through said receiving hole.

6. Grip for gripping a dual piston caliper according to claim 5, said guide being removably connected to said carrier rod.

7. The grip for gripping a dual piston caliper as claimed in claim 6, wherein said second tightening mechanism includes a stopper, a top end of said stopper is fixedly connected to said guide member such that said stopper is suspended in said receiving hole, and an opening is provided in an outer periphery of said push rod, said opening being for insertion of said stopper.

8. The grip for gripping a dual piston caliper as claimed in claim 7, wherein said second tightening mechanism further includes a spindle rotatably coupled to said guide, and said carrier rod is clearance-fitted to said receiving hole, and said stopper is clearance-fitted to said opening hole.

9. Grip for gripping a dual piston caliper according to claim 8, said guide being fitted around the circumference of said rotary shaft, the bottom of said rotary shaft having an extension extending radially outwardly, and the lower end surface of said guide being supported by said extension.

10. Grip for gripping a dual piston caliper according to claim 9, further including a connector longitudinally between said drive mechanism and said guide, said connector being connected to said drive mechanism and said connector being connected to said spindle.

11. Grip for gripping a dual piston caliper according to claim 1, characterized in that the drive mechanism is a cylinder or a pneumatic gripper.

12. Grip for gripping a dual piston caliper according to claim 1, characterized in that said first tightening means is provided with at least two adaptive supports on the end face facing said brake pad clamping jaw.