Motor anti-overload structure for pulling out head and tail plates

Abstract

The utility model relates to a motor anti-overloading structure for pulling out head and tail plates, which is composed of clamping jaw anti-overloading mechanisms arranged on tubular pile equipment in a bilateral symmetry mode, each clamping jaw anti-overloading mechanism comprises a clamping jaw seat, a clamping jaw head and a sensor installation frame are installed on the clamping jaw seat, the clamping jaw head is used for clamping a workpiece, and the sensor installation frame is used for installing a sensor on the clamping jaw seat. The sensor mounting frame is used for fixing a sensor on the clamping jaw seat and sensing the displacement generated by the clamping jaw head; the clamping jaw head is arranged on the clamping jaw seat, an elastic fastening structure is arranged between the clamping jaw seat and the clamping jaw head, and the sensor senses the displacement change with the clamping jaw head by monitoring the elastic deformation of the elastic fastening structure, so that the pull-out action of equipment is adjusted. By adopting the motor anti-overload structure for pulling out the head plate and the tail plate, whether the head plate and the tail plate cannot be pulled out or not can be sensed in advance through the elastic displacement change under the condition of not increasing extra power requirements, and the conditions of motor overload and the like are prevented.

Description

Technical Field

[0001] This utility model relates to the fields of industrial automation and pipe pile production, and particularly to the field of head and tail plate disassembly, specifically referring to an overload protection structure for the motor pulled out from the head and tail plates. Background Technology

[0002] In the field of industrial automation, after prestressed pipe piles are formed, the head plate and tail plate, which are installed on both ends of the pipe pile for auxiliary production, need to be disassembled automatically. Both the head plate and tail plate are connected to the end plates at both ends of the pipe pile by external hexagonal bolts. During automated disassembly, the head and tail plates must be fixed before all these external hexagonal bolts are removed. After all bolts are removed, the head and tail plates are pulled backward and then placed downward in the designated position. This backward pulling action can be driven by the equipment's forward and backward movement motor. However, in actual working conditions, there may be situations such as missing head and tail plate fixing screws, mold deformation clamping the head and tail plates, or cement leakage and adhesion, preventing the head and tail plates from being pulled out smoothly. If the motor is directly driven in this case, it may cause motor overload and damage to structural components. Meanwhile, conventionally, pneumatic or hydraulic methods are used to pull out the head and tail plates first, but this action has disadvantages such as occupying cycle time, affecting the overall structural integrity and reducing overall rigidity, and occupying a large space. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an overload protection structure for motors pulled out from the head and tail plates.

[0004] To achieve the above objectives, the present invention provides an overload protection structure for a motor pulled out from the head and tail plates, as follows:

[0005] The main feature of this overload protection structure for the motor pulled out by the head and tail plates is that it consists of a gripper overload protection mechanism symmetrically arranged on the left and right sides of the pipe pile equipment. The gripper overload protection mechanism includes:

[0006] A gripper base is provided, on which gripper heads and a sensor mounting bracket are mounted. The gripper heads are used to grip the workpiece, and the sensor mounting bracket is used to fix a sensor on the gripper base to sense the displacement generated by the gripper heads.

[0007] An elastic fastening structure is provided between the gripper base and the gripper head. The sensor detects the displacement change between itself and the gripper head by monitoring the elastic deformation of the elastic fastening structure, thereby adjusting the pull-out action of the device.

[0008] Preferably, the elastic fastening structure includes: a spring, one end of which is connected to the gripper head, and the other end is disposed on the gripper seat through a pressure adjusting block and fixed by an anti-loosening nut.

[0009] Preferably, the sensor is used to monitor the displacement signal generated by the gripper head squeezing the spring, and to control the pulling action of the device when the head and tail plates cannot be pulled out.

[0010] Preferably, the gripper head is provided with a sliding groove for mounting a bearing, and the bearing is connected to the gripper seat by screws. The bearing drives the gripper head to slide back and forth on the gripper seat.

[0011] Preferably, the chute is closed at one end and open at the other end.

[0012] The motor overload prevention structure for pulling out the head and tail plates of this utility model can detect in advance whether the head and tail plates cannot be pulled out without increasing the additional power demand, thus preventing motor overload and other situations. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overload protection structure for the motor pulled out from the head and tail plates according to this utility model.

[0014] Figure 2 This is an exploded view of the overload protection structure for the motor pulled out from the head and tail plates according to this utility model.

[0015] Figure 3 This is a schematic diagram of the first working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0016] Figure 4 This is a schematic diagram of the second working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0017] Figure 5 This is a schematic diagram of the third working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0018] Figure 6 This is a schematic diagram of the fourth working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0019] Figure 7 This is a schematic diagram of the fifth working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0020] Figure 8 This is a schematic diagram of the sixth working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0021] Figure 9 This is a schematic diagram of the overall structure of the gripper overload prevention mechanism of this utility model.

[0022] Figure 10This is a schematic diagram of the seventh working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0023] Figure 11 This is a schematic diagram of the eighth working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0024] Figure 12 This is a schematic diagram of the ninth working state of the anti-overload structure for the motor pulled out from the head and tail plates of this utility model.

[0025] Figure Labels

[0026] 1. Claw seat

[0027] 2 springs

[0028] 3 Gripper Head

[0029] 4 sensors

[0030] 5 bearings

[0031] 6 screws

[0032] 7 Pressure regulating block

[0033] 8. Anti-loosening nuts

[0034] 9 Sensor mounting bracket Detailed Implementation

[0035] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0036] Before describing the embodiments according to the present invention in detail, it should be noted that, in the following, the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0037] Please see Figure 1 and 2 As shown, the present invention relates to an overload protection structure for a motor pulled out from the head and tail plates, wherein it comprises an overload protection mechanism for grippers symmetrically arranged on the pipe pile equipment. The overload protection mechanism for grippers includes:

[0038] A gripper base 1 is provided, on which gripper heads 3 and sensor mounting brackets 9 are mounted. The gripper heads 3 are used to grip the workpiece, and the sensor mounting brackets 9 are used to fix a sensor 4 onto the gripper base 1, for sensing the displacement generated by the gripper heads 3.

[0039] An elastic fastening structure is provided between the gripper seat 1 and the gripper head 3. The sensor 4 senses the displacement change between itself and the gripper head 3 by monitoring the elastic deformation of the elastic fastening structure, thereby adjusting the pull-out action of the device.

[0040] In a preferred embodiment of this utility model, the elastic fastening structure includes a spring 2, one end of which is connected to the gripper head 3, and the other end is mounted on the gripper 1 via a pressure adjusting block 7 and secured by a lock nut 8. Specifically, the pressure adjusting block 7 is connected to the gripper seat 1 via a thread on its outer ring. By adjusting the thread engagement depth, the preload distance of the spring 2 can be changed, thereby adjusting the preload of the spring 2 to meet different on-site requirements. The greater the pressure adjustment, the greater the pull-out force, but the greater the motor load, and vice versa.

[0041] In a preferred embodiment of this utility model, the sensor 4 is used to monitor the displacement signal generated by the gripper head 3 squeezing the spring 2, and to control the pulling action of the device when the head and tail plates cannot be pulled out.

[0042] In a preferred embodiment of the present invention, the gripper head 3 is provided with a sliding groove for mounting a bearing 5, and the bearing 5 is connected to the gripper seat 1 by a screw 6. The bearing 5 drives the gripper head 3 to slide back and forth on the gripper seat 1.

[0043] In a preferred embodiment of this utility model, the slide is closed at one end and open at the other end.

[0044] like Figure 1 and 2As shown, the overload protection structure consists of two symmetrical gripper overload protection mechanisms. Each gripper overload protection mechanism includes: a gripper base 1, a spring 2, a gripper head 3, a sensor 4, a bearing 5, a screw 6, a pressure adjusting block 7, a lock nut 8, and a sensor mounting bracket 9. The gripper head 3 is used to clamp the workpiece. The gripper head 3 has a sliding groove and can slide back and forth on the gripper base 1 via the bearing 5. The bearing 5 and the gripper base 1 are connected by the screw 6. One end of the sliding groove of the gripper head 3 is closed, and the other end is open for easy installation. In practical applications, the spring 2 pushes backward against the tail of the gripper head 3, ensuring that the gripper head 3 is always in the rearmost position in its free state (definition of forward / backward direction: after the equipment clamps the head and tail plates with the gripper head 3, it moves along the axial direction of the pipe pile to pull out the head and tail plates; the direction of movement at this time is backward, and vice versa). The other end of the spring 2 is connected to the gripper base 1 via the pressure adjusting block 7 and is fixed by the lock nut 8. Sensor 4 is fixed to the gripper base 1 via sensor mounting bracket 9 and is used to sense the displacement of gripper head 3. During operation, gripper head 3 clamps the head and tail plates and moves backward with the entire equipment. If the head and tail plates are successfully pulled backward, gripper head 3 moves backward normally and is placed downward to the designated position. If the head and tail plates cannot be pulled out, gripper head 3 compresses spring 2, causing a change in the position between gripper head 3 and sensor 4. When sensor 4 senses this signal, it feeds back to the system to stop gripper head 3 from moving backward, thereby protecting the front and rear drive motors of the equipment and preventing motor overload.

[0045] like Figure 3 The diagram shows the first working state of the structure. At this time, the device moves axially into position and clamps the workpiece through the gripper head 3. Figure 4 This is a schematic diagram showing the gripper head 3 pulling out the head and tail plates. Figure 5 To ensure the equipment is in axial position, the head and tail plates are clamped by gripper head 3. Figure 6 The equipment uses gripper head 3 to pull out the head and tail plates. Figure 7 This is a schematic diagram showing the equipment grippers before they clamp the head and tail plates. Figure 8 This is a schematic diagram showing the gripper head 3 clamping the head and tail plates inwards. Figure 9 This is a schematic diagram of the overall structure of the gripper overload protection mechanism. Figure 10 This is a schematic diagram of gripper head 3 clamping towards the head and tail plates. Figure 11 This is a schematic diagram showing the gripper head 3 in a free state. Figure 12 When the head and tail plates cannot actually be pulled out, the gripper head 3 clamps the head and tail plates and cannot move backward. At this time, the equipment moves backward a certain distance, the spring 2 is compressed, the sensor 4 senses the position change, and then stops the equipment from moving backward further, thus protecting the motor.

[0046] In practical applications, the spring 2 used in this technical solution serves to push out the gripper head 3, and can actually be made of any elastic material. This structure divides a single gripper into two parts: a gripper head and a gripper seat. These parts can move back and forth along the groove on the gripper head 3, and their positional relationship is limited by the spring preload. When the head and tail plates cannot be pulled out, the gripper head 3 cannot move because it is clamped to the head and tail plates. The gripper seat 1 moves backward a certain distance with the equipment. At this time, the spring 2 is compressed, the sensor 4 senses the change in the gripper head position, and feeds back to the system to stop the gripper seat 1 from retracting, thereby protecting the drive motor.

[0047] The motor overload prevention structure for pulling out the head and tail plates of this utility model can detect in advance whether the head and tail plates cannot be pulled out without increasing the additional power demand, thus preventing motor overload and other situations.

[0048] In this specification, the present invention has been described with reference to specific embodiments thereof. However, it will be apparent that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, the specification and drawings should be considered illustrative rather than restrictive.

Claims

1. An overload protection structure for a motor pulled out from the head and tail plates, characterized in that, It consists of a gripper overload protection mechanism symmetrically arranged on the left and right sides of the pipe pile equipment, the gripper overload protection mechanism including: A gripper base (1) is provided with a gripper head (3) and a sensor mounting bracket (9). The gripper head (3) is used to grip the workpiece, and the sensor mounting bracket (9) is used to fix a sensor (4) on the gripper base (1) to sense the displacement generated by the gripper head (3). An elastic fastening structure is provided between the gripper seat (1) and the gripper head (3). The sensor (4) senses the displacement change between itself and the gripper head (3) by monitoring the elastic deformation of the elastic fastening structure, thereby adjusting the pull-out action of the pipe pile equipment.

2. The overload protection structure for the motor pulled out from the head and tail plates according to claim 1, characterized in that, The elastic fastening structure includes a spring (2), one end of which is connected to the gripper head (3), and the other end is set on the gripper seat (1) through a pressure adjusting block (7) and fixed by an anti-loosening nut (8).

3. The overload protection structure for the motor pulled out from the head and tail plates according to claim 2, characterized in that, The sensor (4) is used to monitor the displacement signal generated by the gripper head (3) squeezing the spring (2), and to control the pulling action of the pipe pile equipment when the head and tail plates cannot be pulled out.

4. The overload protection structure for the motor pulled out from the head and tail plates according to claim 1, characterized in that, The gripper head (3) is provided with a sliding groove for mounting a bearing (5), and the bearing (5) is connected to the gripper seat (1) by a screw (6). The bearing (5) drives the gripper head (3) to slide back and forth on the gripper seat (1).

5. The overload protection structure for the motor pulled out from the head and tail plates according to claim 4, characterized in that, The chute is closed at one end and open at the other.

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