Special bottom plate protection device for tracked jacking equipment and its usage method

Abstract

This invention relates to the field of tracked jacking equipment technology, specifically disclosing a dedicated bottom plate protection device and its usage method for tracked jacking equipment. The usage method includes installing a rubber protective belt on the upper and lower surfaces of the track using bracket assemblies located on both sides of the jacking equipment, forming a closed-loop transmission rubber protective belt around the track. A jacking cylinder drives the track to rotate, and distance sensors located at both ends of the jacking cylinder measure the jacking distance signal in real time. The jacking distance signal is transmitted to a control system, which determines the jacking speed of the jacking cylinder based on the jacking distance signal and adjusts the rotation speed of the servo drive motor accordingly, so that the rubber protective belt automatically follows and rotates synchronously with the track. This application achieves automatic sensing and automatic following, and the speed can automatically change according to the jacking speed, reducing external force on the rubber belt.

Description

Technical Field

[0001] This invention relates to the technical field of tracked jacking equipment, and particularly to a special bottom plate protection device for tracked jacking equipment and its usage method. Background Technology

[0002] The jacking construction of steel box girders is an important construction method in the field of steel box girder installation, especially suitable for the erection of multi-span continuous beam bridges and overpass bridges. Currently, widely used jacking construction technologies include the ratchet jacking technology and the walking jacking technology. Through a series of studies on steel box girder jacking construction technologies, and combining the advantages and disadvantages of both, a new type of tracked jacking equipment has been developed. For example, patent publication number "CN 115110438 A" discloses a tracked jacking system and jacking construction method for steel box girders. When using this technology, in order to protect the coating of the steel box girder from damage, a rubber sheet needs to be laid between the equipment and the steel box girder. However, the steel box girder is huge, causing the rubber sheet to deform after repeated use. Furthermore, in the high temperatures of summer, it cannot bond with the steel track, resulting in large-scale detachment. The rubber sheet must be replaced manually on-site, which is time-consuming and labor-intensive. Workers must also pay attention to safety during replacement to prevent being caught in the track gaps. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a special bottom plate protection device and a method of using a tracked jacking equipment, so as to solve the problems mentioned in the background art.

[0004] The main objective of this application is to provide a dedicated bottom plate protection device for tracked jacking equipment, comprising:

[0005] A jacking device, which includes at least a jacking cylinder and a track, wherein the jacking cylinder serves as the power to drive the track to rotate;

[0006] Support assemblies are installed on both sides of the pushing device, and one of the support assemblies is equipped with an active roller. A servo drive motor is installed on the side of the support assembly near the active roller.

[0007] A friction drive wheel is provided on the motor shaft of the servo drive motor. The friction drive wheel and the friction passive wheel generate a set positive pressure by pressing against each other to achieve friction transmission. The friction passive wheel and the driving roller are arranged on the same rotating shaft.

[0008] A passive roller is provided on another support assembly;

[0009] Rubber protective strips are laid along the upper and lower surfaces of the track and are installed on the drive roller and driven roller on both sides of the track, respectively.

[0010] A cleaning tensioning mechanism is located on the side near the passive roller. The rubber protective belt passes through the cleaning tensioning mechanism and is tensioned and cleaned by the cleaning tensioning mechanism.

[0011] Distance sensors are respectively installed on both sides of the push cylinder. The distance sensors are used to measure the push distance signal of the push cylinder in real time and transmit the obtained push distance signal to the control system in real time. The control system obtains the push speed of the push cylinder based on the push distance signal, and adjusts the rotation speed of the servo drive motor according to the push speed so that the rubber protective belt automatically follows the track and rotates synchronously.

[0012] Furthermore, the support assembly located on one side of the drive roller is the main support, which is located on the right side of the track and is at the same horizontal position as the track;

[0013] The main support includes a support body, on which a main shaft extends from the outside to the inside of the support body is provided, and the drive roller is provided on the main shaft and located inside the support body;

[0014] The main body of the bracket on the far side of the spindle is fixed to the pushing device by bolts.

[0015] Furthermore, a set of bearing seats on the same axis is provided on the support body, the main shaft is mounted on the bearing seats, and a friction passive wheel is mounted on the side of the support body on the main shaft.

[0016] Furthermore, the support assembly disposed on one side of the passive roller is a passive support, which is disposed on the left side of the track and is at the same horizontal position as the track;

[0017] The passive support includes a passive frame body, on which a passive shaft is provided, extending from the outside to the inside of the passive support body, and the passive roller is provided on the passive shaft and located inside the passive support body.

[0018] The passive support body on the far passive axis side is fixed to the jacking device by bolts.

[0019] Furthermore, a set of passive bearing seats on the same axis are provided on the passive support body, and the passive shaft is mounted on the passive bearing seats.

[0020] Furthermore, the cleaning and tensioning mechanism includes at least one set of tensioning wheels, which are used for cleaning and tensioning the rubber protective belt.

[0021] Furthermore, the distance sensors installed on both sides of the push cylinder are configured to only read the push distance signal when the push cylinder extends, and not read the retraction distance signal when the cylinder retracts.

[0022] Furthermore, the servo drive motor drives the friction drive wheel to rotate via the motor shaft. The transmission ratio is set by setting the positive pressure between the friction drive wheel and the friction passive wheel, thereby enabling the friction passive wheel to rotate at the set number of revolutions.

[0023] The present invention also provides a method for using a special bottom plate protection device for tracked jacking equipment, including the above-mentioned special bottom plate protection device for tracked jacking equipment, comprising the following steps:

[0024] The rubber protective belt is installed on the upper and lower surfaces of the track by bracket assemblies set on both sides of the pushing device, and forms a closed transmission rubber protective belt around the track.

[0025] The push cylinder is used as the power to drive the track to rotate, and the push distance signal of the push cylinder is measured in real time by distance sensors installed at the upper and lower ends of the push cylinder.

[0026] The pushing distance signal is transmitted to the control system. The control system obtains the pushing speed of the pushing cylinder based on the pushing distance signal, and adjusts the rotation speed of the servo drive motor according to the pushing speed so that the rubber protective belt automatically follows the track and rotates synchronously.

[0027] Furthermore, the control system calculates the pushing speed based on a set of pushing distance signals measured by distance sensors set at both ends of the pushing cylinder, and can automatically adjust the rubber protective belt in real time according to the pushing speed and working conditions under different speeds and working conditions.

[0028] This invention has the following advantages:

[0029] Since the rubber protective belt described in this application automatically rotates synchronously with the track, it enables synchronous start and stop between the rubber protective belt and the track during the jacking operation of the steel box girder. The speed of the rubber protective belt can be automatically adjusted synchronously according to the jacking process and speed. On the one hand, the rubber protective belt adheres to the track, protecting the coating of the steel box girder from damage. On the other hand, the use of manpower is reduced through automated operation.

[0030] The rubber protective strip is made into a standard part, and the installation and replacement of the rubber protective strip can be completed through the bracket assembly set in this application. At the same time, the equipment has automatic cleaning and automatic tensioning functions to ensure that the rubber protective strip is clean and pre-tightened, and to avoid damage to the paint surface of the box girder.

[0031] This application achieves automatic sensing and automatic following, and the speed can be automatically changed according to the pushing speed, reducing the external force on the rubber belt, increasing its service life, and saving costs.

[0032] During installation, a dedicated base plate protection device for tracked jacking equipment is also installed. When the jacking equipment is operating, the control system reads distance changes via distance sensors mounted on the jacking cylinders, only reading data when the cylinders extend; during cylinder retraction, the servo drive motor remains inactive. Throughout the construction period, workers only need to observe the equipment's operating status. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the installation of a set of bracket components in this invention;

[0035] Figure 3 This is a schematic diagram of the installation of the friction passive wheel and the friction driving wheel in this invention.

[0036] The structural components of this invention are as follows: 1 passive support, 2 passive roller, 3 rubber protective belt, 4 distance sensor, 5 active roller, 6 active support, 7 cleaning tensioning mechanism, 8 control system, 9 friction passive wheel, 10 friction drive wheel, 11 servo drive motor, and 12 jacking device. Detailed Implementation

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] This application discloses a base plate protection device specifically for tracked jacking equipment, including a passive support 1, a passive roller 2, a rubber protective belt 3, an active support 6, an active roller 5, a servo drive motor 11, a friction drive wheel 10, a friction passive wheel 9, a distance sensor 4, a power supply, a control system, and a cleaning and tensioning mechanism 7. The entire device can automatically adjust the rubber protective belt to follow the jacking speed and operating conditions under different speeds and working conditions. Distance sensors are installed at both ends of the jacking cylinder to accurately measure the jacking speed in real time. The control system automatically calculates the drive motor speed based on this data. The servo drive motor 11 is directly connected to the friction drive wheel 10, driving the friction passive wheel 9 through friction. This transmission mechanism avoids damage caused by errors between the motor speed and the actual required speed, such as rubber belt stretching and deformation, or motor overload and burnout. The passive and active supports are bolted to the jacking equipment for easy disassembly and replacement; the passive roller is installed together with the passive support; the active roller is installed together with the active support; and the cleaning and tensioning mechanism is installed at the rear of the equipment for convenient cleaning and tensioning.

[0039] Specifically, the main objective of this application is to provide a special bottom plate protection device for tracked jacking equipment, comprising: a jacking device 12, wherein the jacking device 12 includes at least a jacking cylinder and a track, and the jacking cylinder serves as the power to drive the track to rotate;

[0040] Support assemblies are set on both sides of the pushing device, and one of the support assemblies is equipped with an active roller. A servo drive motor 11 is set on the side of the support assembly near the active roller.

[0041] A friction drive wheel 10 is provided on the motor shaft of the servo drive motor 11. The friction drive wheel 10 and the friction passive wheel 9 generate a set positive pressure by pressing against each other to achieve friction transmission. The friction passive wheel 9 and the active roller 5 are arranged on the same rotating shaft.

[0042] A passive roller 2 is provided on another support assembly;

[0043] Rubber protective belt 3 is laid along the upper and lower surfaces of the track and is installed on the drive roller 5 and the driven roller 2 on both sides of the track, respectively.

[0044] A cleaning and tensioning mechanism 7 is located on the side near the passive roller. The rubber protective belt passes through the cleaning and tensioning mechanism and is tensioned and cleaned by the mechanism. Distance sensors are respectively installed on both sides of the push cylinder. The distance sensors are used to measure the push distance signal of the push cylinder in real time and transmit the obtained push distance signal to the control system 8 in real time. The control system 8 obtains the push speed of the push cylinder based on the push distance signal and adjusts the rotation speed of the servo drive motor according to the push speed so that the rubber protective belt automatically follows the track and rotates synchronously.

[0045] In the above description, the support assembly located on one side of the drive roller is the main support. The main support is positioned on the right side of the track and is at the same horizontal level as the track. The main support includes a support body, on which a main shaft extends from the outside to the inside. The drive roller is mounted on the main shaft and located inside the support body. The support body on the side furthest from the main shaft is bolted to the pushing device. Furthermore, a set of bearing seats on the same axis is provided on the support body. The main shaft is mounted on the bearing seats, and a friction driven wheel is mounted on the side of the support body, located on the main shaft.

[0046] In the above description, the support assembly located on one side of the driven roller is a passive support. The passive support is positioned on the left side of the track and is at the same horizontal level as the track. The passive support includes a passive frame body, on which a passive shaft extends from the outside to the inside. The driven roller is mounted on the passive shaft and located inside the passive support body. The passive support body on the side furthest from the passive shaft is bolted to the pushing device. A set of passive bearing seats on the same axis is provided on the passive support body, and the passive shaft is mounted on the passive bearing seats.

[0047] It should be noted that the main components of the support structure are two parallel support beams. Through holes for mounting bearing seats are opened on the sides of the support beams. The bearing seats are installed in the through holes, ensuring the two bearing seats are on the same axis. The support beams are installed on the front and rear sides of the pushing device, positioned on the front and rear sides of the track, with the main shaft located on the right side of the track. Similarly, the driven shaft is located on the left side of the track. A rubber protective belt is installed on the upper and lower surfaces of the track, forming a closed-loop transmission rubber protective belt around the track via the driving and driven rollers. The rubber protective belt fits perfectly with the track. The rubber protective belt is made as a standard component, and the installation and replacement of the rubber protective belt are accomplished through the support assembly provided in this application.

[0048] In the above description, the cleaning and tensioning mechanism includes at least one set of tensioning rollers, which are used for cleaning and tensioning the rubber protective belt. In this application, the equipment has automatic cleaning and automatic tensioning functions to ensure the cleanliness and pre-tension of the rubber protective belt, preventing damage to the paint surface of the box girder. To ensure the cleaning work can be completed, a scraper or a rinsing water pipe is provided in the reserved space between the set of tensioning rollers; the choice of method depends on the specific implementation of this application.

[0049] In the above, the distance sensors on both sides of the push cylinder are configured to read only the push distance signal when the push cylinder extends, and not the retraction distance signal when the cylinder retracts. Specifically, a data acquisition module is set in the control system. This data acquisition module has a first acquisition unit and a second acquisition unit. The first acquisition unit is configured to couple with the distance sensor at one end of the push cylinder and read the real-time push distance signal measured by the distance sensor at one end of the push cylinder. The second acquisition unit is configured to couple with the distance sensor at the other end of the push cylinder and read the real-time push distance signal measured by the distance sensor at the other end of the push cylinder. A control module is set in the control system. The control module is configured to couple to the first acquisition unit and the second acquisition unit, and to shield the reading of the push distance signal already read by the first and second acquisition units when the cylinder retracts through a reverse signal shielding unit set in the control module, and only read the push distance signal when the push cylinder extends. It should be noted that the reverse signal shielding unit is also coupled to the first acquisition unit and the second acquisition unit respectively. When the push cylinder extends, the reverse signal shielding unit is disconnected from the first acquisition unit and the second acquisition unit. At this time, the control module can receive the push distance signal that has been read in real time through the first acquisition unit and the second acquisition unit. When the cylinder retracts, the reverse signal shielding unit is connected to the first acquisition unit and the second acquisition unit. At this time, the reverse signal shielding unit shields the push distance signal that has been read by the first acquisition unit and the second acquisition unit when the cylinder retracts.

[0050] It should be noted that, in this application, the control module is further provided with a preprocessing unit. The preprocessing unit is used to receive a set of pushing distance signals already read by the first acquisition unit and the second acquisition unit, and to determine whether the pushing cylinder extends or retracts based on the set of pushing distance signals. The judgment result of the preprocessing unit is used to control the reverse signal shielding unit to read and shield the signals of the first acquisition unit and the second acquisition unit.

[0051] The servo drive motor drives the friction drive wheel to rotate via its motor shaft. The transmission ratio is set by adjusting the positive pressure between the friction drive wheel and the friction driven wheel, allowing the friction driven wheel to rotate at the set speed. This transmission mechanism avoids damage caused by discrepancies between the motor speed and the required speed, such as rubber belt deformation or motor overload. Simultaneously, it maintains a stable output by ensuring the transmission ratio between the friction drive wheel and the friction driven wheel is maintained.

[0052] The present invention also provides a method for using a special bottom plate protection device for tracked jacking equipment, including the above-mentioned special bottom plate protection device for tracked jacking equipment, comprising the following steps:

[0053] The rubber protective belt is installed on the upper and lower surfaces of the track by bracket assemblies set on both sides of the pushing device, and forms a closed transmission rubber protective belt around the track.

[0054] The push cylinder is used as the power to drive the track to rotate, and the push distance signal of the push cylinder is measured in real time by distance sensors installed at the upper and lower ends of the push cylinder.

[0055] The pushing distance signal is transmitted to the control system. The control system obtains the pushing speed of the pushing cylinder based on the pushing distance signal, and adjusts the rotation speed of the servo drive motor according to the pushing speed so that the rubber protective belt automatically follows the track and rotates synchronously.

[0056] The control system calculates the pushing speed based on a set of pushing distance signals measured by distance sensors set at both ends of the pushing cylinder. It can automatically adjust the rubber protective belt in real time according to the pushing speed and working conditions under different speeds and working conditions.

[0057] In the above,

[0058] Since the rubber protective belt described in this application automatically rotates synchronously with the track, it enables synchronous start and stop between the rubber protective belt and the track during the jacking operation of the steel box girder. The speed of the rubber protective belt can be automatically adjusted synchronously according to the jacking process and speed. On the one hand, the rubber protective belt adheres to the track, protecting the coating of the steel box girder from damage. On the other hand, the use of manpower is reduced through automated operation.

[0059] This application achieves automatic sensing and automatic following, and the speed can be automatically changed according to the pushing speed, reducing the external force on the rubber belt, increasing its service life, and saving costs.

[0060] During installation, a dedicated base plate protection device for tracked jacking equipment is also installed. When the jacking equipment is operating, the control system reads distance changes via distance sensors mounted on the jacking cylinders, only reading data when the cylinders extend; during cylinder retraction, the servo drive motor remains inactive. Throughout the construction period, workers only need to observe the equipment's operating status.

[0061] The above description is only part of the embodiments of the present application and does not limit the patent scope of the present application. All equivalent structural transformations made by using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect application in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A special bottom plate protection device for tracked jacking equipment, characterized in that, include: A jacking device, which includes at least a jacking cylinder and a track, wherein the jacking cylinder serves as the power to drive the track to rotate; Support assemblies are set on both sides of the pushing device, and one of the support assemblies is equipped with an active roller. A servo drive motor is set on the side of the support assembly near the active roller. A friction drive wheel is provided on the motor shaft of the servo drive motor. The friction drive wheel and the friction passive wheel generate a set positive pressure by pressing against each other to achieve friction transmission. The friction passive wheel and the driving roller are arranged on the same rotating shaft. A passive roller is provided on another support assembly; Rubber protective strips are laid along the upper and lower surfaces of the track and are installed on the drive roller and driven roller on both sides of the track, respectively. A cleaning tensioning mechanism is located on the side near the passive roller. The rubber protective belt passes through the cleaning tensioning mechanism and is tensioned and cleaned by the cleaning tensioning mechanism. Distance sensors are respectively installed on both sides of the push cylinder. The distance sensors are used to measure the push distance signal of the push cylinder in real time and transmit the obtained push distance signal to the control system in real time. The control system obtains the push speed of the push cylinder based on the push distance signal, and adjusts the rotation speed of the servo drive motor according to the push speed so that the rubber protective belt automatically follows the track and rotates synchronously.

2. The special bottom plate protection device for tracked jacking equipment according to claim 1, characterized in that, The support assembly located on one side of the drive roller is the main support, which is located on the right side of the track and is at the same horizontal position as the track. The main support includes a support body, on which a main shaft extends from the outside to the inside of the support body is provided, and the drive roller is provided on the main shaft and located inside the support body; The main body of the bracket on the far side of the spindle is fixed to the pushing device by bolts.

3. The special bottom plate protection device for tracked jacking equipment according to claim 2, characterized in that, A set of bearing seats on the same axis is provided on the main body of the bracket. The main shaft is mounted on the bearing seats, and a friction passive wheel is mounted on the side of the main body of the bracket on the main shaft.

4. The special bottom plate protection device for tracked jacking equipment according to claim 1, characterized in that, The support assembly located on one side of the passive roller is a passive support, which is located on the left side of the track and is at the same horizontal position as the track; The passive support includes a passive frame body, on which a passive shaft is provided, extending from the outside to the inside of the passive support body, and the passive roller is provided on the passive shaft and located inside the passive support body. The passive support body on the far passive axis side is fixed to the jacking device by bolts.

5. The special bottom plate protection device for tracked jacking equipment according to claim 4, characterized in that, A set of passive bearing seats on the same axis is provided on the passive support body, and the passive shaft is mounted on the passive bearing seats.

6. The special bottom plate protection device for tracked jacking equipment according to claim 1, characterized in that, The cleaning and tensioning mechanism includes at least one set of tensioning wheels, which are used for cleaning and tensioning the rubber protective belt.

7. The special bottom plate protection device for tracked jacking equipment according to claim 1, characterized in that, The distance sensors installed on both sides of the push cylinder are configured to only read the push distance signal when the push cylinder extends, and not read the retraction distance signal when the cylinder retracts.

8. The special bottom plate protection device for tracked jacking equipment according to claim 1, characterized in that, The servo drive motor drives the friction drive wheel to rotate via the motor shaft. The transmission ratio is set by setting the positive pressure between the friction drive wheel and the friction driven wheel, so that the friction driven wheel can rotate at the set number of revolutions.

9. A method of using a special bottom plate protection device for tracked jacking equipment, comprising the special bottom plate protection device for tracked jacking equipment as described in any one of claims 1-8, characterized in that, Includes the following steps: The rubber protective belt is installed on the upper and lower surfaces of the track by bracket assemblies set on both sides of the pushing device, and forms a closed transmission rubber protective belt around the track. The push cylinder is used as the power to drive the track to rotate, and the push distance signal of the push cylinder is measured in real time by distance sensors set at the upper and lower ends of the push cylinder. The pushing distance signal is transmitted to the control system. The control system obtains the pushing speed of the pushing cylinder based on the pushing distance signal, and adjusts the rotation speed of the servo drive motor according to the pushing speed so that the rubber protective belt automatically follows the track and rotates synchronously.

10. The method of using the special bottom plate protection device for tracked jacking equipment according to claim 9, characterized in that, The control system calculates the pushing speed based on a set of pushing distance signals measured by distance sensors set at both ends of the pushing cylinder. It can automatically adjust the rubber protective belt in real time according to the pushing speed and working conditions under different speeds and working conditions.

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