Head and tail plate bolt unscrewing turn number counting misjudgment prevention mechanism

Abstract

The utility model relates to a head and tail plate bolt unscrewing turn number counting misjudgment prevention mechanism which comprises a pneumatic hammer (7) used for driving a special sleeve (1) arranged at the front end of the pneumatic hammer (7) to rotate, and a counting sensing structure is further arranged at the front end of the pneumatic hammer (7). The special sleeve (1) is provided with a characteristic through hole (8), and the counting sensing structure is used for conducting signal sensing processing on the characteristic through hole (8) and recording the number of turns based on the obtained signal. According to the head and tail plate bolt unscrewing turn number counting misjudgment prevention mechanism, through the arranged counting sensing structure, the number of rotation turns of a pneumatic hammer can be accurately recorded, the problem that under the condition that a nut is still not moved, the nut is misjudged to be rotating by the turn number counting sensor is solved, the misjudgment problem can be effectively solved, and certain application value is achieved.

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, it refers to a mechanism for preventing misjudgment by counting the number of loosening bolt turns of head and tail plates. Background Technology

[0002] In the field of industrial automation, after the prestressed pipe piles are formed, the head plate and tail plate, which are installed on both ends of the pipe piles and are used to assist in the production of the pipe piles, need to be disassembled automatically.

[0003] Both the head plate and the tail plate are connected to the end plates at both ends of the pipe pile by external hexagonal bolts. The specific process is to use a sleeve with internal teeth to fit the nut of the external hexagonal bolt, and then drive the sleeve to rotate by a pneumatic wrench to unscrew the bolt.

[0004] During automated disassembly, the time it takes for the pneumatic wrench to loosen bolts varies significantly due to various factors such as different bolt tightening torques, inconsistent thread wear, and residual slurry seeping into the threads. Furthermore, some bolts may be too tight to be loosened during disassembly. Since the pneumatic wrench generates rotational torque through impact, and a gap inevitably exists between the sleeve and the nut, the sleeve's rotation direction will continue to vibrate even if the nut remains stationary when some bolts are not loosened. If the edge of the sleeve's identification feature happens to be within the sensing position of the rotation count sensor, the sensor will continue to receive signals of feature changes, misinterpreting the sleeve's rotation. This leads to bolts that haven't been loosened being mistakenly identified as loosened, resulting in inaccurate counting. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a mechanism for preventing misjudgment of the number of turns of the head and tail plate bolt loosening.

[0006] To achieve the above objectives, the present invention provides a mechanism for preventing misjudgment in counting the number of loosening bolt turns of the head and tail plate bolts as follows:

[0007] The main feature of this head and tail plate bolt loosening count anti-misjudgment mechanism is that the mechanism includes:

[0008] The air cannon is used to drive a specially designed sleeve at its front end to rotate, and the front end is also equipped with a counting sensor structure.

[0009] The specially designed sleeve is provided with a characteristic through hole, and the counting and sensing structure is used to perform signal sensing and processing on the characteristic through hole, and record the number of rotations of the air gun based on the acquired signal.

[0010] Preferably, the counting sensing structure is a count sensor that is set at a vertical angle.

[0011] Preferably, the feature through hole is disposed in the circumferential rotation direction of the special sleeve and includes a metallic feature thereon.

[0012] Preferably, when the specially designed sleeve is rotated and the characteristic through hole approaches one of the revolution counting sensors, an induction signal is generated;

[0013] When the specially designed sleeve rotates one revolution, two counting sensors, each set at a vertical angle, generate two sensing signals, and the counting sensors complete one revolution to count the number of revolutions.

[0014] Preferably, the lap count sensor with the lower lap count value is used as the final lap count.

[0015] Preferably, the lap count sensor is mounted on a fixed base via a sensor mounting block.

[0016] Preferably, the mounting base is connected to the air gun by connecting screws.

[0017] Preferably, the specially designed sleeve is mounted at the front end of the air gun via a connecting pin.

[0018] The head and tail plate bolt loosening counting anti-misjudgment mechanism of this utility model can accurately record the number of rotations of the blower through the set counting sensing structure, avoiding the problem that the counting sensor will misjudge the nut as rotating when the nut is not moving. It can effectively solve the misjudgment problem and has certain application value. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plate of this utility model.

[0020] Figure 2 This is an exploded view of the anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to this utility model.

[0021] Figure 3 This is a schematic diagram of the counting sensor of the bolt loosening counting mechanism of the head and tail plate of this utility model to prevent misjudgment.

[0022] Figure 4 This is a schematic diagram illustrating the working principle of the counting sensor in the bolt loosening counting mechanism of the head and tail plate of this utility model to prevent misjudgment.

[0023] Figure 5 This is a detailed drawing of the specially made sleeve for the anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plate bolts of this utility model.

[0024] Figure 6 The detailed diagram shows the counting mechanism for preventing misjudgment of bolt loosening on the head and tail plates of this utility model.

[0025] Figure Labels

[0026] 1. Special sleeve

[0027] 2 Sensor mounting block

[0028] 3. Counting Sensor

[0029] 4. Fixture

[0030] 5 Connecting screws

[0031] 6 Connecting pins

[0032] 7. Pneumatic cannons

[0033] 8 Featured Through Holes Detailed Implementation

[0034] To more clearly describe the technical content of this utility model, the following description is provided in conjunction with specific embodiments.

[0035] 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.

[0036] Please see Figure 1 and 2 As shown, the head and tail plate bolt loosening count anti-misjudgment mechanism of this utility model includes:

[0037] The wind cannon 7 is used to drive the special sleeve 1 set at its front end to rotate, and the front end is also equipped with a counting induction structure.

[0038] The specially designed sleeve 1 is provided with a feature through hole 8. The counting and sensing structure is used to perform signal sensing and processing on the feature through hole 8, and record the number of rotations of the wind gun 7 based on the acquired signal.

[0039] In a preferred embodiment of this utility model, the counting sensing structure is a counting sensor 3 arranged at a vertical angle.

[0040] In a preferred embodiment of the present invention, the feature through hole 8 is disposed in the circumferential rotation direction of the special sleeve 1, and includes a metal feature thereon.

[0041] In a preferred embodiment of this utility model, when the specially made sleeve 1 is rotated and the feature through hole 8 approaches one of the count sensors 3, an induction signal is generated.

[0042] When the specially designed sleeve 1 rotates one revolution, the counting sensors 3, which are set at a vertical angle, generate two sensing signals, and the counting sensors 3 complete the counting of one revolution.

[0043] In a preferred embodiment of this utility model, the lap count sensor 3 with the lowest lap count value is taken as the final lap count.

[0044] In a preferred embodiment of this utility model, the lap count sensor 3 is mounted on the fixed base 4 via the sensor mounting block 2.

[0045] In a preferred embodiment of this utility model, the fixing base 4 is connected to the air gun 7 by connecting screws 5.

[0046] In a preferred embodiment of this utility model, the specially made sleeve 1 is set at the front end of the air gun 7 via a connecting pin 6.

[0047] like Figures 3 to 6 As shown, this technical solution uses a characteristic through-hole 8 in the rotation direction of the sleeve as a feature for the counting sensor 3 to identify. Since the sleeve needs to rotate at high speed during operation, the characteristic through-hole 8 is designed to meet the dynamic balance requirements. That is, for every rotation of the special sleeve 1, a single sensor obtains two signals, and the diameter of the through-hole meets the minimum sensing size of the sensor. Two counting sensors 3 are designed for sensing, and the angular relationship between them can prevent both counting sensors 3 from simultaneously sensing the identification feature on the special sleeve 1. Only the counting sensor 3 with fewer rotation values ​​is read, thus avoiding misjudgment.

[0048] In practical applications, this mechanism includes: a special sleeve 1, two sensor mounting blocks 2, two count sensors 3, a fixing base 4, four sets of connecting screws 5, a connecting pin 6, and an air gun 7.

[0049] The special sleeve 1 is fixed to the front end 7 of the air gun via a connecting pin 6. Two rotation counting sensors 3 are fixed to a mounting base 4 via two sensor mounting blocks 2. The mounting base 4 is connected to the air gun 7 via connecting screws 5. During operation, the special sleeve 1 rotates under the drive of the air gun 7. The two rotation counting sensors 3 sense the characteristic through-hole 8 on the special sleeve 1. When the characteristic through-hole 8 approaches the rotation counting sensor 3, a signal is sensed. If a metallic feature is sensed within a certain range in front of the sensor, a signal is generated; otherwise, no signal is generated. During the rotation of the sleeve, each time the characteristic through-hole 8 approaches / moves from the front end of the proximity sensor, the proximity counting sensor 3 senses a signal, generating one signal. One rotation of the sleeve generates two signals; that is, every two signals sensed by the proximity sensor represent one rotation of the sleeve, thus achieving the rotation counting function. The lower value from the two rotation counting sensors 3 is used to avoid misjudgment.

[0050] It is understandable that the feature through hole 8 used in this technical solution as an identification feature is actually implemented through arbitrary differentiated structures such as protruding features, which will not be elaborated here.

[0051] Meanwhile, this technical solution uses two sensor mounting blocks 2, one fixing base 4, and four sets of connecting screws 5 as the connecting mechanism. In fact, each of the above components only serves to fix the two count sensors 3 to the main body of the wind gun 7. Therefore, they can also be integrated parts or other forms, which will not be elaborated here.

[0052] The head and tail plate bolt loosening counting anti-misjudgment mechanism of this utility model can accurately record the number of rotations of the blower through the set counting sensing structure, avoiding the problem that the counting sensor will misjudge the nut as rotating when the nut is not moving. It can effectively solve the misjudgment problem and has certain application value.

[0053] 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. A mechanism for preventing misjudgment of the number of turns of loose head and tail plate bolts, characterized in that, The aforementioned institutions include: The air cannon (7) is used to drive the special sleeve (1) set at its front end to rotate, and the front end is also provided with a counting induction structure; The special sleeve (1) is provided with a feature through hole (8). The counting and sensing structure is used to perform signal sensing processing on the feature through hole (8) and record the number of rotations of the wind gun (7) based on the acquired signal.

2. The anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to claim 1, characterized in that, The counting sensing structure is a counting sensor (3) set at a vertical angle.

3. The anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to claim 2, characterized in that, The feature through hole (8) is provided in the circumferential rotation direction of the special sleeve (1) and contains a metal feature.

4. The anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to claim 2, characterized in that, When the specially designed sleeve (1) is rotated and the feature through hole (8) approaches one of the count sensors (3), an induction signal is generated; The specially designed sleeve (1) rotates one revolution and forms a vertical angle. The counting sensors (3) generated two sensing signals, and the counting sensors (3) completed one revolution to count the number of revolutions.

5. The anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to claim 4, characterized in that, The count sensor (3) with the lowest count value is taken as the final count of the air gun (7).

6. The anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to claim 2, characterized in that, The lap count sensor (3) is mounted on the fixed base (4) via the sensor mounting block (2).

7. The anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to claim 6, characterized in that, The mounting base (4) is connected to the air gun (7) by connecting screws (5).

8. The anti-misjudgment mechanism for counting the number of loose bolt turns of the head and tail plates according to claim 1, characterized in that, The specially designed sleeve (1) is set at the front end of the air gun (7) via a connecting pin (6).

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