Movable walking folding pin puller

Abstract

The invention relates to the technical field of pin pulling, and particularly discloses a movable walking folding pin puller which comprises a walking mechanism, a control mechanism, a driving mechanism and a mounting mechanism and further comprises a pin pulling mechanism, the pin pulling mechanism comprises an automatic telescopic part, a fixing piece, a connecting piece and a driving piece, the automatic telescopic part is connected to the mounting mechanism, and the fixing piece is connected to the connecting piece. The fixing piece is connected with the automatic telescopic part through the connecting piece, the fixing piece can be fixed to a connector at the end of a pin shaft, the driving piece is connected to the connecting piece, the driving piece can drive the connecting piece to be connected with the fixing piece, and when the pin shaft is beaten, the fixing piece can be fixed to the connector at the end of the pin shaft. The driving piece can drive the connecting piece to be separated from the fixing piece; according to the movable walking folding pin puller, the fixing piece and the connecting piece can be separated, so that the situation that after vibration is transmitted to the pin puller, an electric device on the pin puller is damaged is avoided, and a connector at the end of a pin shaft does not need to be repeatedly fixed again.

Description

Technical Field

[0001] The present invention relates to the technical field of pin pulling, and in particular to a mobile walking folding pin puller. Background Art

[0002] With the development of industry, the mechanical equipment used in various projects is becoming more and more diverse and complex. There have emerged many large-scale heavy equipment, which often include multiple large components. These large-scale heavy equipment are large in volume and heavy in weight, making them inconvenient to transport. Usually, these large components need to be transported to the construction site for assembly and application. When the project is completed, the large-scale heavy equipment needs to be disassembled and then transported to another construction site for assembly and application again. In most of the current heavy equipment, the components are generally connected by pin shafts. The pin shafts are usually cylindrical in a T shape, and a connecting head is provided at the end of the pin shaft, and a connecting hole is provided on the connecting head. The pin shafts used in large-scale heavy equipment are also often relatively large in size, which cannot be compared with the pin shafts on general machinery. This makes the disassembly and assembly of these large pin shafts a difficult task and difficult to complete by manpower. Therefore, disassembly equipment is needed to disassemble the pin shafts.

[0003] A Chinese patent document with the publication number of CN110253267B discloses a disassembly device for large pin shafts and its application, including a walking trolley, a hydraulic cylinder pin pulling device, a lifting platform, a lifting device and a console; the bottom of the lifting platform is installed on the walking trolley through a scissor mechanism, and an I-shaped track is provided at the top of the lifting platform; the bottom of the hydraulic cylinder pin pulling device is placed on the I-shaped track through electric rollers; a pin shaft clamping device is connected to the front end of the hydraulic cylinder pin pulling device, and an image recognition and processing device is installed at the end of the hydraulic cylinder pin pulling device.

[0004] During use, the walking trolley is moved to the side of the pin shaft that needs to be disassembled on the hydraulic support through the console. The lifting device is adjusted through the console, and the hook of the lifting device is used to fix the part of the hydraulic support to be disassembled. Then, the CCD camera is started through the console to collect the image information of the pin shaft to be disassembled currently, and the image information is transmitted to the console. The console automatically adjusts the coordinated operation of the walking trolley, the lifting platform, and the electric roller according to the feedback image information. Finally, the L-shaped clamping rod at the front end of the hydraulic cylinder pin pulling device is aligned with the pin shaft to be disassembled. At the same time, the hydraulic cylinder leg extends to fix the entire device. Subsequently, the piston rod of the hydraulic cylinder of the hydraulic cylinder pin pulling device extends outwards, and the front end of the L-shaped clamping rod pushes the pin shaft outwards for a certain distance. The hydraulic cylinder leg retracts, and the walking trolley is moved to the other side of the hydraulic support through the console. The CCD camera collects the image information of the pin shaft to be disassembled currently again and transmits the image information to the console. The console automatically adjusts the coordinated operation of the walking trolley, the lifting platform, and the electric roller again according to the feedback image information. Finally, the L-shaped clamping rod at the front end of the hydraulic cylinder pin pulling device is aligned with the pin shaft. At the same time, the hydraulic cylinder leg extends to fix the entire device. The console controls the micro motor to start, and the two juxtaposed L-shaped clamping rods are opened through the micro motor. The hydraulic cylinder drives the L-shaped clamping rod to reach the pin shaft, and the two L-shaped clamping rods clamp the protruding part of the pin shaft and pull it outwards to complete the disassembly. The pulled-out pin shaft enters the sleeve. When the pin shaft is displaced as a whole to the opening on one side of the sleeve, the pin shaft rolls from the opening to the pin shaft recovery plate under the action of gravity.

[0005] However, there are still the following deficiencies in the above patent document: In order to facilitate the removal of the pin shaft, the pin shaft is often knocked during the disassembly process of the pin shaft to make the pin shaft vibrate and become loose from the connection structure. At this time, because the connection part between the disassembly device and the pin shaft is in contact, the electrical components on the disassembly device are easily damaged due to the vibration transmitted from the pin shaft. For a pin shaft with a T-shaped cylindrical shape, a connection head is provided at the end, and a connection hole is provided on the connection head. In the existing equipment, the method of directly separating the disassembly device from the connection head at the end of the pin shaft can avoid the vibration on the pin shaft being transmitted to the disassembly device. However, after the pin shaft is vibrated, the angle of the connection head at its end is prone to deviation, resulting in the need for the disassembly device to be adjusted again and fixed to the connection head at the end of the pin shaft, which is too complicated to operate. Summary of the Invention

[0006] The present invention provides a mobile walking folding pin puller, aiming to solve the problem that the electrical components at the connection part between the disassembly device and the pin shaft are easily damaged due to the vibration transmitted from the pin shaft in the related technology.

[0007] The mobile walking pin extractor of the present invention includes a walking mechanism, a control mechanism, a driving mechanism, and a mounting mechanism, and further includes a pin extraction mechanism. The pin extraction mechanism includes an automatic telescopic part, a fixing part, a connecting part, and a driving part. The automatic telescopic part is connected to the mounting mechanism. The fixing part is connected to the automatic telescopic part through the connecting part. The fixing part can be fixed to the connecting head at the end of the pin shaft. The driving part is connected to the connecting part. When the driving part drives the connecting part to be connected to the fixing part and knocks on the pin shaft, the driving part can drive the connecting part to be separated from the fixing part.

[0008] Beneficial effects: When disassembling the pin shaft, the control mechanism controls the walking mechanism to move to the set working area. Then, the control mechanism continues to control the driving mechanism and the mounting mechanism to move the pin extraction mechanism to the connecting head at the end of the pin shaft. Subsequently, the automatic telescopic part drives the fixing part, the connecting part, and the driving part to move towards the pin shaft, so that the connecting head at the end of the pin shaft extends into the fixing part, and the fixing part is fixed to the connecting head at the end of the pin shaft. Finally, the automatic telescopic part is started to drive the fixing part, the connecting part, and the driving part to move away from the connecting structure, thereby removing the pin shaft from the connecting structure. When it is necessary to knock on the pin shaft, the driving part drives the connecting part to separate the connecting part from the fixing part, so as to avoid damage to the electrical components on the pin extractor caused by the vibration generated by knocking on the pin shaft, and there is no need to repeatedly fix the connecting head at the end of the pin shaft again.

[0009] Preferably, the fixing part includes a fixing cylinder, a fixing portion, and a first connecting hose. A cavity is provided in the fixing cylinder. A plurality of mounting holes are provided on the inner wall of the fixing cylinder, and the plurality of mounting holes are all communicated with the cavity. The fixing portions are provided in plurality, and the plurality of fixing portions are respectively inserted into the plurality of mounting holes. One end of the first connecting hose is connected to the fixing cylinder, and the other end of the first connecting hose is connected to the driving part.

[0010] The effect is that the driving part can convey gas into the cavity through the first connecting hose to increase the air pressure in the cavity, thereby pushing the fixing portion to move towards the direction of extending out of the mounting hole until the fixing portion passes through the connecting hole on the connecting head at the end of the pin shaft, so as to realize the fixation of the connecting head at the end of the pin shaft, facilitating the subsequent pin extraction operation of the pin shaft. The fixing portion that does not pass through the connecting hole abuts against the connecting head at the end of the pin shaft, thereby assisting in positioning the fixing cylinder to ensure the separation of the connecting part from the fixing part, and after the pin shaft is vibrated, the connecting part can be smoothly reconnected to the fixing part again.

[0011] Preferably, the first connecting hose is in a relaxed state and is communicated with the cavity.

[0012] The effect is that: through the connecting hose one in a relaxed state, the risk of the connecting hose one transmitting vibration to the driving part can be greatly reduced, so as to avoid damage to the driving part due to vibration.

[0013] Preferably, the connecting hose one is made of rubber material.

[0014] Preferably, annular convex parts are arranged at one ends of the inner walls of the mounting holes close to the axis of the fixed cylinder, and the fixing parts pass through the convex parts.

[0015] The effect is that: through the convex parts, the fixing parts can be prevented from completely disengaging from the mounting holes.

[0016] Preferably, an installation cavity is arranged at one end of the fixed cylinder close to the connecting part, and an annular blocking part is arranged at one end of the inner wall of the installation cavity close to the connecting part.

[0017] The effect is that: through the installation cavity and the blocking part, it is convenient for the connecting part to be connected with the fixed cylinder.

[0018] Preferably, the connecting part includes a mounting seat, a connecting part and a connecting hose two. The mounting seat is connected to the telescopic end of the automatic telescopic part. A cavity is arranged at one end of the interior of the mounting seat close to the fixed cylinder. Through holes are arranged on the inner wall of the cavity. The connecting part is inserted into the two through holes.

[0019] The effect is that: when the pin shaft needs to be knocked, before knocking the pin shaft, start the driving part to extract the air in the cavity through the connecting hose two, so that the connecting part extends into the cavity. At this time, the blocking part no longer blocks the connecting part. Then start the automatic telescopic part to drive the mounting seat to separate from the fixed cylinder, so as to avoid the vibration generated during the knocking of the pin shaft from being transmitted to the connecting part.

[0020] Preferably, one end of the connecting hose two is connected to the mounting seat, the other end of the connecting hose two is connected to the driving part, and the connecting hose two is communicated with the cavity.

[0021] Preferably, the driving part includes an air pump one and an air pump two. The air pump one and the air pump two are both connected to the mounting seat. The air pump one is connected to the connecting hose one, and the air pump two is connected to the connecting hose two.

[0022] The effect is that: through the air pump one, gas can be conveyed into the cavity through the connecting hose one, or the gas in the cavity can be extracted. Through the air pump two, gas can be conveyed into the cavity through the connecting hose two, or the gas in the cavity can be extracted.

[0023] Preferably, the installation mechanism includes an installation frame, an installation cylinder and a driving part. The installation frame is connected to the driving mechanism. The installation cylinder is connected in the installation frame in a limited sliding manner. One end of the driving part is hinged to the installation cylinder, and the other end of the driving part is hinged to the installation frame. The automatic telescopic part is connected in the installation cylinder.

[0024] Its effect is that the installation cylinder can block the removed pin shaft. Once the pin shaft falls off the pin pulling mechanism, the installation cylinder will support and store the pin shaft to prevent the pin shaft falling off the pin pulling mechanism from directly falling on the ground, enhancing the safety during the disassembly of the pin shaft.

[0025] The beneficial effects of the present invention are: 1. When it is necessary to strike the pin shaft, before striking the pin shaft, start the driving part to extract the air in the chamber, so that the connecting part extends into the chamber. At this time, the blocking part no longer blocks the connecting part. Then start the automatic telescopic part to drive the mounting seat to separate from the fixed cylinder. At this time, the first connecting hose is still in a relaxed state. When the pin shaft is struck at this time, the vibration generated by the pin shaft will not be transmitted to the connecting piece, and the first connecting hose is still in a relaxed state to avoid damage to the electrical components on the pin puller caused by the vibration generated by the pin shaft during striking, and there is no need to fix the connector at the end of the pin shaft repeatedly. For a pin shaft with a T-shaped cylindrical shape, a connector is provided at the end, and a connecting hole is provided on the connector. Compared with the prior art method of directly separating the pin puller from the connecting hole on the connecting part at the end of the pin shaft, the pin puller in the present application does not need to be adjusted multiple times and aligned and connected with the connecting hole on the connecting part at the end of the pin shaft again, improving the pin pulling efficiency of the pin puller for the pin shaft.

[0026] 2. The installation cylinder can block the removed pin shaft. Once the pin shaft falls off the pin pulling mechanism, the installation cylinder will support and store the pin shaft to prevent the pin shaft falling off the pin pulling mechanism from directly falling on the ground, enhancing the safety during the disassembly of the pin shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 2 is a planar structural schematic diagram of the present invention.

[0029] Figure 3 is a planar structural schematic diagram of the installation mechanism and the pin pulling mechanism of the present invention.

[0030] Figure 4 is a planar structural schematic diagram of the pin pulling mechanism of the present invention.

[0031] Figure 5 is a cross-sectional structural schematic diagram of the pin pulling mechanism of the present invention.

[0032] Figure 6 is of the present invention Figure 5 enlarged structural schematic diagram at A.

[0033] Figure 7 is a state diagram of the pin pulling mechanism and the pin shaft of the present invention.

[0034] Reference numerals: 1. Traveling mechanism; 11. Installation platform; 12. Traveling wheels; 13. Stopping member; 2. Control mechanism; 3. Driving mechanism; 4. Installation mechanism; 41. Installation frame; 42. Installation cylinder; 43. Driving part; 5. Pin pulling mechanism; 51. Automatic telescopic part; 52. Fixing member; 521. Fixing cylinder; 522. Cavity; 523. Installation hole; 524. Fixing part; 525. Installation cavity; 526. Protruding part; 527. Blocking part; 528. Connecting hose 1; 53. Connecting member; 531. Installation seat; 532. Chamber; 533. Connecting part; 534. Connecting hose 2; 54. Driving member; 541. Air pump 1; 542. Air pump 2. Detailed implementation manners

[0035] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0036] As Figures 1 to 7 shown, the mobile traveling and folding pin puller of the present invention includes a traveling mechanism 1, a control mechanism 2, a driving mechanism 3, an installation mechanism 4, and a pin pulling mechanism 5. The control mechanism 2 and the driving mechanism 3 are both connected to the traveling mechanism 1. The installation mechanism 4 is connected to the driving mechanism 3. The pin pulling mechanism 5 is installed on the installation mechanism 4. The control mechanism 2 can control the operation of the traveling mechanism 1, the driving mechanism 3, the installation mechanism 4, and the pin pulling mechanism 5. The traveling mechanism 1 is used to drive the pin pulling mechanism 5 to move to a set working area. The driving mechanism 3 is used to align the pin pulling mechanism 5 with the end of the pin shaft. The installation mechanism 4 is used to provide installation for the pin pulling mechanism 5. The pin pulling mechanism 5 can disassemble the pin shaft so that the pin shaft is separated from the connection structure. When the pin shaft is struck to cause the pin shaft to vibrate and become loose from the connection structure, the pin pulling mechanism 5 can be disassembled, thereby blocking the transmission of the vibration of the pin shaft, so that the vibration on the pin shaft cannot be transmitted to the electrical components on the pin puller, and further avoiding damage to the electrical components on the pin puller. For a T-shaped cylindrical pin shaft with a connecting head at the end and a connecting hole on the connecting head, compared with the prior art method of directly separating the pin puller from the connecting hole on the connecting part at the end of the pin shaft, the pin puller in this application does not need to be adjusted multiple times and aligned and connected with the connecting hole on the connecting part at the end of the pin shaft again, improving the pin pulling efficiency of the pin puller for the pin shaft.

[0037] During use, first start the traveling mechanism 1 to move the entire pin puller to the set working area. Then start the driving mechanism 3 to drive the mounting mechanism 4 and the pin pulling mechanism 5 to move, so that the pin pulling mechanism 5 moves to the end of the pin shaft. The end of the pin shaft has a connection head that can be connected to the pin pulling mechanism 5, and a connection hole is provided on the connection head. Then drive the pin pulling mechanism 5 to be fixed to the connection head at the end of the pin shaft. Finally, start the pin pulling mechanism 5 to move in a direction away from the pin shaft, thereby pulling out the pin shaft.

[0038] As Figure 1 and Figure 2 shown, the traveling mechanism 1 includes a mounting table 11, traveling wheels 12 and a stopping member 13. The control mechanism 2 and the driving mechanism 3 are both mounted on the mounting table 11. Four traveling wheels 12 are provided, and the four traveling wheels 12 are respectively connected to the four ends of the bottom of the mounting table 11. The control mechanism 2 can control the operation of the four traveling wheels 12 to realize the automatic movement of the traveling mechanism 1. The stopping member 13 is connected to the mounting table 11, and the stopping member 13 can abut against the ground after the four traveling wheels 12 stop running to enhance the stability of the pin puller during operation.

[0039] The control mechanism 2 starts the four traveling wheels 12, and drives the mounting table 11 to move through the operation of the four traveling wheels 12 until the pin puller moves to the set working area.

[0040] As Figures 1 to 3 shown, the mounting mechanism 4 includes a mounting frame 41, a mounting cylinder 42 and a driving part 43. The mounting frame 41 is connected to the driving mechanism 3. The mounting cylinder 42 is connected in the mounting frame 41 in a limited sliding manner. The driving part 43 is a cylinder. One end of the driving part 43 is hinged to the mounting cylinder 42, and the other end of the driving part 43 is hinged to the mounting frame 41. The pin pulling mechanism 5 is connected in the mounting cylinder 42. Starting the driving part 43 can drive the mounting cylinder 42 to slide in a limited way on the mounting frame 41, which can increase the moving stroke of the pin pulling mechanism 5 when the pin shaft is too long, so as to ensure that the pin shaft can be disassembled, so as to avoid the situation that the pin shaft cannot be removed because the length of the pin shaft is greater than the maximum moving length of the pin pulling mechanism 5.

[0041] After the pin pulling mechanism 5 is fixed to the connection head at the end of the pin shaft, continue to start the pin pulling mechanism 5 to pull the pin shaft. When the pin pulling mechanism 5 moves to the maximum stroke, if the pin shaft is not completely separated from the connection structure, at this time start the driving part 43 to drive the mounting cylinder 42 to move in a direction away from the connection structure, thereby driving the pin pulling mechanism 5 to continue to move. The pin pulling mechanism 5 continues to pull the pin shaft to move until the pin shaft is completely separated from the connection structure. At the same time, the disassembled pin shaft is received in the mounting cylinder 42, and the pin shaft does not contact the inner wall of the mounting cylinder 42. The mounting cylinder 42 shields the pin shaft. Once the pin shaft falls off the pin pulling mechanism 5, the mounting cylinder 42 supports and receives the pin shaft to prevent the pin shaft falling off the pin pulling mechanism 5 from directly falling on the ground, enhancing the safety during the disassembly of the pin shaft.

[0042] As Figure 1 、 Figures 3 to 7 shown, the pin pulling mechanism 5 includes an automatic telescoping part 51, a fixing part 52, a connecting part 53 and a driving part 54. The automatic telescoping part 51 is a cylinder. The automatic telescoping part 51 is connected inside the mounting cylinder 42, and the telescoping end of the automatic telescoping part 51 does not contact the mounting cylinder 42. The fixing part 52 is connected to the telescoping end of the automatic telescoping part 51 through the connecting part 53. The driving part 54 is connected to the connecting part 53 and is used to drive the fixing part 52 and the connecting part 53 to operate. When the driving part 54 drives the fixing part 52, it can fix the fixing part 52 to the connecting head at the end of the pin shaft, so as to facilitate the pin pulling operation on the pin shaft. When the driving part 54 drives the connecting part 53, it can connect the fixing part 52 to the connecting part 53. The automatic telescoping part 51 can pull the connecting part 53 to move away from the connecting structure, and the connecting part 53 drives the fixing part 52 to move away from the connecting structure, so that the fixing part 52 pulls the pin shaft and separates from the connecting structure. After the pin shaft is completely separated from the connecting structure, the driving mechanism 3 drives the pin pulling mechanism 5 to move down to a low position. At this time, the fixing part 52 releases the fixed connection with the pin shaft, and then the pin shaft can be removed.

[0043] Start the driving mechanism 3 to drive the pin pulling mechanism 5 to move so that the fixing part 52 is aligned with the connecting head at the end of the pin shaft. Then start the automatic telescoping part 51 to drive the connecting part 53, the fixing part 52 and the driving part 54 to approach the connecting head at the end of the pin shaft. Subsequently, start the driving part 54 to start the fixing part 52 so that the fixing part 52 is fixedly connected to the connecting head at the end of the pin shaft. At the same time, start the automatic telescoping part 51 to drive the connecting part 53, the fixing part 52 and the driving part 54 to move away from the connecting structure. Before the pin shaft needs to be knocked, start the driving part 54 to drive the connecting part 53 to release the connection between the connecting part 53 and the fixing part 52, and the automatic telescoping part 51 drives the connecting part 53 to separate from the fixing part 52, so that the vibration generated after the pin shaft is knocked will not be transmitted to the electrical components on the pin pulling mechanism 5, thereby ensuring that the electrical components on the pin pulling mechanism 5 can be used normally.

[0044] Continue to refer to Figure 1 、 Figures 3 to 7As shown, the fixing member 52 includes a fixing cylinder 521, a fixing portion 524, and a first connecting hose 528. A cavity 522 is formed in the fixing cylinder 521. A plurality of mounting holes 523 are provided on the inner wall of the fixing cylinder 521, and the plurality of mounting holes 523 communicate with the cavity 522. The fixing portions 524 are provided in plurality, and the plurality of fixing portions 524 are respectively inserted into the plurality of mounting holes 523. The fixing portion 524 is in a T shape. One end of the first connecting hose 528 is connected to the fixing cylinder 521, and the other end of the first connecting hose 528 is connected to the driving member 54. The first connecting hose 528 is in a relaxed state and communicates with the cavity 522. The first connecting hose 528 is made of rubber material. Starting the driving member 54 can convey gas into the cavity 522 through the first connecting hose 528, so that the air pressure in the cavity 522 increases, thereby pushing the fixing portion 524 to move in the direction of protruding from the mounting hole 523 until the fixing portion 524 passes through the connecting hole on the connector at the end of the pin shaft, thus realizing the fixation of the connector at the end of the pin shaft, facilitating the subsequent pin extraction operation of the pin shaft. The fixing portion 524 that does not pass through the connecting hole abuts against the connector at the end of the pin shaft, thereby assisting in positioning the fixing cylinder 521 to ensure the separation of the connecting member 53 from the fixing member 52. And after the pin shaft is vibrated, the connecting member 53 can be smoothly reconnected to the fixing member 52 again. Annular protrusions 526 are provided at one end of the inner walls of the plurality of mounting holes 523 close to the axis of the fixing cylinder 521. The fixing portion 524 passes through the protrusion 526, and the protrusion 526 can prevent the fixing portion 524 from completely detaching from the mounting hole 523. An installation cavity 525 is provided at one end of the fixing cylinder 521 close to the connecting member 53. An annular blocking portion 527 is provided at one end of the inner wall of the installation cavity 525 close to the connecting member 53. Through the installation cavity 525 and the blocking portion 527, it is convenient for the connecting member 53 to be connected to the fixing cylinder 521.

[0045] After the connector at the end of the pin shaft extends into the fixing cylinder 521, start the driving member 54 to convey gas into the cavity 522, so that the air pressure in the cavity 522 increases. The air pressure inside the cavity 522 pushes the plurality of fixing portions 524 to move in the direction close to the connector, so that some of the fixing portions 524 pass through the connecting holes on the connector, and the remaining fixing portions 524 that do not pass through the connecting holes abut against the connector, thereby assisting in fixing the fixing cylinder 521.

[0046] Continue to refer to Figure 1 、 Figures 3 to 7As shown in the figure, the connecting member 53 includes a mounting base 531, a connecting portion 533, and a second connecting hose 534. The mounting base 531 is connected to the telescopic end of the automatic telescopic portion 51. A chamber 532 is provided at one end of the mounting base 531 close to the fixed cylinder 521. Two through holes are provided on the inner wall of the chamber 532. The connecting portion 533 is provided in two. The two connecting portions 533 are respectively inserted into the two through holes. One end of the second connecting hose 534 is connected to the mounting base 531, and the other end of the second connecting hose 534 is connected to the driving member 54. The second connecting hose 534 is communicated with the chamber 532. The driving member 54 can convey gas into the chamber 532 through the second connecting hose 534, so that the air pressure in the chamber 532 increases. The air pressure inside the chamber 532 pushes the connecting portion 533 to move in the direction of extending out of the chamber 532, so that the connecting portion 533 extends into the mounting cavity 525. When the automatic telescopic portion 51 drives the connecting member 53 to move towards the direction close to the pin shaft, the fixed cylinder 521 on the fixing member 52 is directly pushed by the mounting base 531 to move the fixing member 52 towards the direction close to the pin shaft. When the automatic telescopic portion 51 drives the connecting member 53 to move away from the connecting structure, the connecting portion 533 on the connecting member 53 is blocked by the blocking portion 527. The connecting portion 533 on the connecting member 53 pulls the blocking portion 527 and drives the fixed cylinder 521 to move, so that the fixing member 52 pulls the pin shaft to move away from the connecting structure. The outer diameter of the part of the mounting base 531 extending into the mounting cavity 525 is smaller than the inner diameter of the blocking portion.

[0047] When disassembling the pin shaft, the fixing member 52 is fixedly connected to the connecting head at the end of the pin shaft. The automatic telescopic portion 51 is started to drive the connecting member 53 to move away from the connecting structure. At this time, the connecting portion 533 on the connecting member 53 is blocked by the blocking portion 527. The connecting portion 533 on the connecting member 53 pulls the blocking portion 527 and drives the fixed cylinder 521 to move, so that the fixing member 52 pulls the pin shaft to move away from the connecting structure, thereby disassembling the pin shaft from the connecting structure. During the process of disassembling the pin shaft, when it is necessary to strike the pin shaft, before striking the pin shaft, start the driving member 54 to extract the air in the chamber 532 through the second connecting hose 534, so that the connecting portion 533 extends into the chamber 532. At this time, the blocking portion 527 no longer blocks the connecting portion 533. Then start the automatic telescopic portion 51 to drive the mounting seat 531 to separate from the fixed cylinder 521. At this time, the first connecting hose 528 is still in a relaxed state. When the pin shaft is struck at this time, the vibration generated by the pin shaft will not be transmitted to the connecting member 53. And at this time, because the first connecting hose 528 is in a relaxed state, the risk of the first connecting hose 528 transmitting the vibration to the driving member 54 can be greatly reduced, so as to avoid damage to the driving member 54 due to vibration. For a pin shaft with a T-shaped cylindrical shape, a connecting head is provided at the end, and a connecting hole is provided on the connecting head. Compared with the prior art method of directly separating the pin extractor from the connecting hole on the connecting portion at the end of the pin shaft, the pin extractor in this application does not need to be adjusted multiple times and aligned and connected with the connecting hole on the connecting portion at the end of the pin shaft again, improving the pin extraction efficiency of the pin extractor for the pin shaft.

[0048] Continue to refer to Figure 1 、 Figures 3 to 7 As shown, the driving member 54 includes a first air pump 541 and a second air pump 542. Both the first air pump 541 and the second air pump 542 are connected to the mounting seat 531. The first air pump 541 is connected to the first connecting hose 528. The first air pump 541 can transport gas into the cavity 522 through the first connecting hose 528, or extract the gas in the cavity 522. The second air pump 542 is connected to the second connecting hose 534. The second air pump 542 can transport gas into the chamber 532 through the second connecting hose 534, or extract the gas in the chamber 532.

[0049] Working principle: Start the traveling mechanism 1 to move the entire pin extractor to the set working area. Then start the driving mechanism 3 to drive the mounting mechanism 4 and the pin extraction mechanism 5 to move until the fixed cylinder 521 is aligned with the connecting head at the end of the pin shaft.

[0050] Start the automatic telescopic portion 51 to drive the connecting member 53, the fixing member 52 and the driving member 54 close to the connecting head at the end of the pin shaft until the connecting head at the end of the pin shaft extends into the fixed cylinder 521.

[0051] Start the first air pump 541 to transport gas into the cavity 522 through the first connecting hose 528, so that the air pressure in the cavity 522 increases, thereby pushing the fixing portion 524 to move in the direction of extending out of the mounting hole 523 until the fixing portion 524 passes through the connecting hole on the connecting head at the end of the pin shaft, thereby realizing the fixation of the connecting head at the end of the pin shaft, facilitating the subsequent pin extraction operation of the pin shaft. The fixing portion 524 that does not pass through the connecting hole abuts against the connecting head at the end of the pin shaft, thereby assisting in positioning the fixed cylinder 521.

[0052] The starting air pump two 542 conveys air into the chamber 532 through the connecting hose two 534, so as to increase the air pressure in the chamber 532. The air pressure inside the chamber 532 pushes the connecting part 533 to move in the direction of extending out of the chamber 532, so that the connecting part 533 extends into the installation cavity 525.

[0053] When the automatic telescopic part 51 drives the connecting piece 53 to move towards the direction close to the pin shaft, the mounting seat 531 directly pushes the fixed cylinder 521 on the fixing piece 52 to move, so that the fixing piece 52 moves towards the direction close to the pin shaft. When the automatic telescopic part 51 drives the connecting piece 53 to move away from the connecting structure, the connecting part 533 on the connecting piece 53 is blocked by the blocking part 527. The connecting part 533 on the connecting piece 53 pulls the blocking part 527 and drives the fixed cylinder 521 to move, so that the fixing piece 52 pulls the pin shaft to move away from the connecting structure.

[0054] When the pin shaft needs to be knocked, before knocking the pin shaft, start the driving part 54 to extract the air in the chamber 532, so that the connecting part 533 extends into the chamber 532. At this time, the blocking part 527 no longer blocks the connecting part 533. Then start the automatic telescopic part 51 to drive the mounting seat 531 to separate from the fixed cylinder 521. At this time, the connecting hose one 528 is still in a relaxed state. When knocking the pin shaft at this time, the vibration generated by the pin shaft will not be transmitted to the connecting piece 53, and the connecting hose one 528 is still in a relaxed state.

[0055] After knocking the pin shaft, start the air pump two 542 again to convey air into the chamber 532 through the connecting hose two 534, so as to increase the air pressure in the chamber 532. The air pressure inside the chamber 532 pushes the connecting part 533 to move in the direction of extending out of the chamber 532, so that the connecting part 533 extends into the installation cavity 525 to realize the reconnection between the connecting piece 53 and the fixing piece 52. Finally, continue to start the automatic telescopic part 51, and the automatic telescopic part 51 drives the connecting piece 53, the fixing piece 52 and the driving part 54 to move away from the connecting structure until the pin shaft is removed.

[0056] When the pin pulling mechanism 5 moves to the maximum stroke and the pin shaft is not completely separated from the connecting structure, start the driving part 43 to drive the mounting cylinder 42 to move away from the connecting structure, so as to drive the pin pulling mechanism 5 to continue to move away from the connecting structure. The pin pulling mechanism 5 continues to pull the pin shaft to move until the pin shaft is completely separated from the connecting structure.

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A mobile, folding pin puller, comprising a traveling mechanism (1), a control mechanism (2), a driving mechanism (3) and a mounting mechanism (4), characterized in that: The invention also comprises a pin pulling mechanism (5), the pin pulling mechanism (5) comprising an automatic telescopic part (51), a fixing part (52), a connecting part (53) and a driving part (54), wherein the automatic telescopic part (51) is connected to the mounting mechanism (4), the fixing part (52) is connected to the automatic telescopic part (51) via the connecting part (53), the fixing part (52) can be fixed to a connecting head at the end of a pin shaft, the driving part (54) is connected to the connecting part (53), the driving part (54) can drive the connecting part (53) to connect with the fixing part (52), and when the pin shaft is struck, the driving part (54) can drive the connecting part (53) to separate from the fixing part (52).

2. The mobile, foldable pin puller according to claim 1, characterized in that: The fixing member (52) comprises a fixing cylinder (521), a fixing portion (524) and a connecting hose (528); a cavity (522) is provided in the fixing cylinder (521); a plurality of mounting holes (523) are provided on the inner wall of the fixing cylinder (521); the plurality of mounting holes (523) are all in communication with the cavity (522); a plurality of fixing portions (524) are provided; the plurality of fixing portions (524) are respectively plugged into the plurality of mounting holes (523); one end of the connecting hose (528) is connected to the fixing cylinder (521); and the other end of the connecting hose (528) is connected to the driving member (54).

3. The mobile, foldable pin puller according to claim 2, characterized in that: The connecting hose 1 (528) is in a relaxed state, and the connecting hose 1 (528) is in communication with the cavity (522).

4. The mobile, foldable pin puller according to claim 3, characterized in that: The connecting hose 1 (528) is made of rubber material.

5. The mobile, foldable pin puller according to claim 3, characterized in that: An annular protrusion (526) is provided at one end of the inner wall of the mounting hole (523) close to the axis of the fixing cylinder (521), and the fixing portion (524) passes through the protrusion (526).

6. The mobile, foldable pin puller according to claim 3, characterized in that: An installation cavity (525) is provided at one end of the fixing cylinder (521) close to the connecting piece (53), and an annular blocking portion (527) is provided on an inner wall of the installation cavity (525) close to one end of the connecting piece (53).

7. The mobile, foldable pin puller according to claim 3, characterized in that: The connecting member (53) comprises a mounting seat (531), a connecting portion (533) and a second connecting hose (534); the mounting seat (531) is connected to the telescopic end of the automatic telescopic portion (51); a chamber (532) is provided at one end of the mounting seat (531) close to the fixing tube (521); through holes are provided on the inner wall of the chamber (532); and the connecting portion (533) is plugged into the two through holes.

8. The mobile, foldable pin puller according to claim 7, characterized in that: One end of the second connecting hose (534) is connected to the mounting seat (531), the other end of the second connecting hose (534) is connected to the driving member (54), and the second connecting hose (534) is in communication with the chamber (532).

9. The mobile, foldable pin puller according to claim 8, characterized in that: The driving member (54) comprises an air pump 1 (541) and an air pump 2 (542), both of which are connected to a mounting seat (531), the air pump 1 (541) being connected to a connecting hose 1 (528), and the air pump 2 (542) being connected to a connecting hose 2 (534).

10. The mobile, foldable pin puller according to any one of claims 1 to 9, characterized in that: The mounting mechanism (4) comprises a mounting frame (41), a mounting cylinder (42) and a driving portion (43); the mounting frame (41) is connected to the driving mechanism (3); the mounting cylinder (42) is limitedly slidably connected in the mounting frame (41); one end of the driving portion (43) is hinged to the mounting cylinder (42); the other end of the driving portion (43) is hinged to the mounting frame (41); and the automatic telescopic portion (51) is connected in the mounting cylinder (42).

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