Weight-adjustable trestle counterweight device and mounting and adjusting method

Abstract

The invention discloses a weight-adjustable trestle counterweight device and a mounting and adjusting method, the weight-adjustable trestle counterweight device at least comprises a main box chamber arranged below a trestle, and the main box chamber is provided with a liquid injection pipe, a breather pipe and a liquid outlet; an infusion pump is arranged at the liquid injection pipe, and valves are arranged at the breather pipe and the liquid outlet. According to the trestle balance weight device, in the construction, maintenance and use processes, balance weight and weight reduction can be carried out on the trestle in a full-automatic mode according to the stress condition of the trestle, and the safety of the trestle structure is improved; the device is convenient to install and attractive in structure, meets the requirement for trestle balance weight and also meets the requirement for beautifying the urban environment.

Description

Technical Field

[0001] The invention belongs to the field of bridge accessory structure design and construction, and particularly relates to a trestle counterweight device with adjustable weight and an installation method. Background Art

[0002] Piers not only provide pedestrian access but also serve as scenic city attractions for tourists to enjoy, becoming increasingly common in today's urban development. Compared to conventional bridges, piers are smaller in width, longer, and lighter in structure. During the pier design process, weighting is often applied to ensure stability and prevent swaying or even overturning. Conventional weighting methods (such as using high-density concrete or grouting steel box girder bridges in closed chambers) may not meet the stability requirements of piers. For one thing, the small cross-section of the pier structure means the weight applied by conventional weighting methods is small and may not meet the design weight requirements. Furthermore, conventional weighting methods are one-time weighting methods, making it impossible to adjust the weight based on the results of regular maintenance inspections. Furthermore, after the pier is put into operation, inspection and maintenance are carried out according to a planned cycle, with long intervals between inspections and maintenance. This makes it difficult to detect and repair sudden structural damage caused by special loads or natural disasters during operation. Therefore, the research on the trestle counterweight device with adjustable weight has practical engineering value. Summary of the Invention

[0003] In response to the above-mentioned problems existing in the counterweight of a trestle, the present invention provides a trestle counterweight device with adjustable weight and an installation method.

[0004] To achieve the above-mentioned object, the present invention provides a weight-adjustable trestle counterweight device, which comprises at least a main box chamber disposed below the trestle, wherein the main box chamber is provided with a liquid injection pipe, a vent pipe, and a liquid discharge port;

[0005] The injection pipe is provided with a liquid pump, and the ventilation pipe and the liquid discharge port are provided with valves.

[0006] Furthermore, a liquid level display device is provided on one side of the main chamber.

[0007] Furthermore, an auxiliary chamber is provided on one side of the main chamber, and a door panel is provided on one side wall of the auxiliary chamber; the liquid level display device is correspondingly located in the auxiliary chamber.

[0008] Furthermore, fixing members are provided below the trestle along the length direction of the trestle, and the main box chamber is fixed below the trestle through the fixing members.

[0009] Furthermore, the cross-section of the fixing piece is L-shaped or inverted T-shaped; an L-shaped or inverted T-shaped slot is correspondingly provided on the upper surface of the main box chamber; and the main box chamber is connected to the fixing piece via the L-shaped or inverted T-shaped slot.

[0010] Furthermore, a rubber pad is provided on the outer surface of the fixing member.

[0011] Furthermore, the main chamber bottom plate is provided with a certain slope in the longitudinal direction of the bridge, and the lowest point of the slope of the main chamber bottom plate in the longitudinal direction of the bridge is at the drain port, so as to facilitate the discharge of the counterweight liquid from the drain port.

[0012] Furthermore, a liquid injection notch is recessed at the bottom of the main chamber, and the liquid injection pipe is arranged in the liquid injection notch.

[0013] Furthermore, a stress and strain monitor is provided on the trestle;

[0014] The liquid injection port is connected to a liquid injection pipe, and a controlled liquid pump is provided on the liquid injection pipe;

[0015] The liquid discharge port is provided with a controlled liquid discharge valve;

[0016] It also includes a control device for controlling the controlled liquid pump to inject water into the main tank chamber or controlling the controlled liquid discharge valve to discharge water from the main tank chamber according to the signal of the stress and strain monitor.

[0017] Furthermore, it also includes a water tank, and the injection pipe is connected to the water tank; the water outlet of the controlled drain valve is provided with a drain pipe, and the water outlet of the drain pipe is connected to the water tank.

[0018] To achieve the above object, the installation method of the above-mentioned adjustable weight trestle counterweight device of the present invention comprises the following steps:

[0019] (1): Arrange stress and strain monitors on the trestle;

[0020] (2): Determine the shape, size and selected balancing fluid of the trestle balancing device according to the balancing weight requirements of the trestle design and the aesthetic requirements of the landscape;

[0021] (3): The liquid injection tube and the liquid extraction pump are assembled to form a combined component 1;

[0022] (4): The vent pipe and the vent pipe valve are assembled to form a second combined component;

[0023] (5): The liquid discharge port and the liquid discharge port valve, the transition pipe, the liquid level display tube and the liquid level display tube valve are assembled to form a combined component three;

[0024] (6): Holes are opened on the main chamber according to the sizes of the liquid injection pipe, the vent pipe, and the transition pipe, and then the combination component 1, the combination component 2, and the combination component 3 are connected to the main chamber tightly and firmly respectively; the liquid level display tube is firmly connected to the main chamber through a buckle, the main chamber sealing door is connected to the main chamber through a sealing door connector, the auxiliary chamber door panel is connected to the auxiliary chamber through a door panel connector, and the control device is installed in the auxiliary chamber to form the upper structure of the trestle counterweight device;

[0025] (7): The upper structure of the trestle counterweight device is connected to the trestle through a full-length fixed member firmly connected to the lower edge of the trestle and a full-length rubber pad;

[0026] (8): The liquid inlet and outlet of the counterweight device, the liquid inlet and outlet switch of the counterweight device, the vent pipe of the liquid storage tank and the vent pipe valve of the liquid storage tank are firmly connected to form a combined component four;

[0027] (9): The liquid storage tank is connected to the combined component 4 and buried below the ground to form the lower structure of the trestle counterweight device;

[0028] (10): The liquid injection pipe connects the liquid storage box to the liquid injection pipe, and the liquid discharge pipe connects the liquid storage box to the liquid discharge port. Cables connect the control device to the stress and strain monitor, the liquid pump, the vent pipe valve, the liquid discharge port valve, the liquid height display pipe valve, and the liquid storage box vent pipe valve.

[0029] (11): Inject the counterweight liquid from the liquid inlet and outlet of the counterweight device to form a complete trestle counterweight device with adjustable weight.

[0030] (12): The valve of the trestle counterweight device is adjusted by the control device, the liquid pump is started, and the counterweight liquid is extracted from the liquid storage tank into the main box chamber, thereby increasing the trestle counterweight; or the valve of the trestle counterweight device and the liquid pump are adjusted by the control device, and the counterweight liquid is discharged from the main box chamber into the liquid storage tank, thereby reducing the trestle counterweight.

[0031] When the trestle is adding counterweight, the valve of the liquid discharge port is in the closed state, the valve of the vent pipe, the valve of the liquid level display pipe and the valve of the vent pipe of the liquid storage tank are all in the open state, and the liquid pump is running; after the counterweight device of the trestle reaches the required weight, the liquid pump stops running, and the valve of the liquid discharge port, the valve of the vent pipe, the valve of the liquid level display pipe and the valve of the vent pipe of the liquid storage tank should all be in the closed state;

[0032] When the trestle reduces its counterweight, the liquid pump is in a stopped state, the vent pipe valve, the liquid level display pipe valve and the liquid storage tank vent pipe valve are in an open state, and the discharge port valve is open; after the trestle counterweight device has reached the required weight, the discharge port valve, the vent pipe valve, the liquid level display pipe valve and the liquid storage tank vent pipe valve should all be in a closed state.

[0033] To achieve the above object, the method for adjusting the weight-adjustable trestle counterweight device of the present invention comprises the following steps:

[0034] (1) Real-time monitoring of the trestle through stress and strain monitors;

[0035] (2) When the stress and strain data monitored by the stress and strain monitor is less than the minimum stress and strain setting value, the drain valve is closed, the vent valve, the liquid level display valve, and the liquid storage tank vent valve are opened, and the liquid pump is operated to inject a predetermined amount of the weight liquid in the liquid storage tank into the main tank chamber through the injection pipe;

[0036] (3) When the stress and strain data monitored by the stress and strain monitor is greater than the maximum stress and strain setting value, the liquid pump remains in a non-operating state, the vent pipe valve, the liquid height display pipe valve, and the liquid storage tank vent pipe valve are opened, and the drain port valve is opened to discharge a predetermined amount of counterweight liquid in the main chamber into the liquid storage tank through the drain pipe;

[0037] (4) After a predetermined time has passed since step (2) or step (3) was executed once, the process returns to step (1).

[0038] The trestle counterweight device of the present invention is equipped with a stress and strain monitor on the trestle, which can provide real-time feedback on the stress and deformation of the trestle to the control device. The counterweight of the trestle can be dynamically adjusted through the program logic of the control device. This can play a beneficial role in the design, construction, maintenance and commissioning of the trestle, and achieve safe protection of the stress and deformation of the trestle structure. The trestle counterweight device is equipped with a liquid height display tube. According to the principle of communicating vessels, it can accurately understand the volume of the counterweight liquid inside the trestle counterweight device and feedback the volume and converted mass of the counterweight liquid in the main box of the control device. It is equipped with a wireless handheld display corresponding to the control device, and the stress and strain conditions of the trestle and the weight of the trestle counterweight are intuitively displayed to the staff in the form of data through the wireless handheld display corresponding to the control device. The main structure of the trestle counterweight device is connected to the trestle via a full-length fixed member, facilitating its installation, removal, and recycling. Furthermore, the trestle counterweight device monitors the safety of the trestle structure in real time and, through a control device, fully automates the weighting and unweighting of the plank walkway, reducing labor costs. The shape and paint color of the trestle counterweight device can be designed to suit landscape requirements. The device is easy to install and has an aesthetically pleasing structure, meeting the requirements of trestle counterweights and beautifying the urban environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 EE cross-sectional view of Example 1 of the present invention;

[0040] Figure 2 FF cross-sectional view of Example 1 of the present invention;

[0041] Figure 3 This is a GG cross-sectional view of Example 1 of the present invention;

[0042] Figure 4 This is a cross-sectional view taken along line HH of Example 1 of the present invention;

[0043] Figure 5 AA cross-sectional view of Example 1 of the present invention;

[0044] Figure 6 BB cross-sectional view of Example 1 of the present invention;

[0045] Figure 7 This is a CC cross-sectional view of Example 1 of the present invention;

[0046] Figure 8 DD cross-sectional view of Example 1 of the present invention;

[0047] Figure 9 EE and CC cross-sectional views of the composite component 1 in Example 1 of the present invention;

[0048] Figure 10 2 are the GG and BB cross-sectional views of the second composite member in Example 1 of the present invention;

[0049] Figure 11 sectional views II and BB of the composite component 3 in Example 1 of the present invention;

[0050] Figure 12 This is an enlarged detailed view of the fourth composite member in Example 1 of the present invention;

[0051] Figure 13 This is a construction flow chart of a weight-adjustable trestle counterweight device according to embodiment 2 of the present invention;

[0052] In the figure, 1 is the main chamber, 2 is the auxiliary chamber, 2-2 is the auxiliary chamber door panel, 2-3 is the door panel connector, 3 is the liquid injection pipe, 4 is the vent pipe, 5 is the transition pipe, 6 is the liquid discharge port, 7 is the liquid level display tube, 8-1 is the liquid pump, 8-2 is the vent pipe valve, 8-3 is the liquid discharge port valve, 8-4 is the liquid level display tube valve, 9 is the buckle, 10 is the full-length fixing component, 11 is the full-length rubber pad, 12 is the stress and strain monitor, 13 is the control device, 13-2 is the wireless handheld display corresponding to the control device, 14 is the liquid injection pipe, 15 is the liquid discharge pipe, 16 is the liquid storage box, 17 is the liquid inlet and outlet of the counterweight device, 17-2 is the liquid inlet and outlet switch of the counterweight device, 17-3 is the liquid storage box vent pipe, 17-4 is the liquid storage box vent pipe valve, 18 is the counterweight liquid. DETAILED DESCRIPTION

[0053] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0054] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0055] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0056] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0057] Example 1

[0058] The following describes embodiment 1 of the present invention in detail with reference to the accompanying drawings.

[0059] This embodiment provides a trestle counterweight device with adjustable weight.

[0060] See attached Figures 1 to 11 The device of the invention mainly includes: a main chamber 1, an auxiliary chamber 2, an auxiliary chamber door panel 2-2, a door panel connector 2-3, a liquid injection pipe 3, a vent pipe 4, a transition pipe 5, a drain port 6, a liquid level display tube 7, a liquid pump 8-1, a vent pipe valve 8-2, a liquid drain port valve 8-3, a liquid level display tube valve 8-4, a snap 9, a full-length fixing component 10, a full-length rubber pad 11, a stress and strain monitor 12, a control device 13, a wireless handheld display 13-2 corresponding to the control device, a liquid injection pipe 14, a liquid discharge pipe 15, a liquid storage box 16, a liquid inlet and outlet of a counterweight device 17, a liquid inlet and outlet switch 17-2 of a counterweight device, a liquid storage box vent pipe 17-3, a liquid storage box vent pipe valve 17-4, and a counterweight liquid 18.

[0061] Stress and strain monitors 12 are arranged at locations where the stress of the trestle structure is relatively large, where the structure deformation is relatively large (such as the mid-span position of the trestle) and where the cross-section of the trestle changes. Figures 1 to 8 .

[0062] The structural dimensions of the main chamber 1, auxiliary chamber 2 and liquid storage tank 16 are determined based on the design, construction, maintenance and aesthetic considerations of the trestle. The counterweight liquid 18 is made of a liquid material with high density and good fluidity. During the production of the main chamber, a notch is formed at the appropriate position at the bottom to facilitate the concealment of the injection pipe 3. Figure 9 .

[0063] The injection pipe 3 is firmly connected to the liquid extraction pump 8-1 to form a combined component 1. When the liquid extraction pump 8-1 in the combined component 1 is in the working state, the channel of the combined component 1 is open, which will realize the function of extracting the balancing liquid 18 into the main chamber 1; when the liquid extraction pump 8-1 in the combined component 1 is in the non-working state, the channel of the combined component 1 is closed to ensure that the balancing liquid 18 in the main chamber 1 does not leak. The longitudinal and cross-sectional views of the combined component 1 are shown in FIG. Figure 9 .

[0064] The vent pipe 4 is firmly connected to the vent pipe valve 8-2 to form a second assembly. The open state of the second assembly ensures that the air pressure in the main chamber 1 is kept the same as the external ambient pressure. The closed state of the second assembly ensures that the weight liquid 18 in the main chamber 1 does not evaporate and lose. The longitudinal and cross-sectional views of the second assembly are shown in FIG. Figure 10 .

[0065] The drain port 6 and the drain port valve 8-3 are firmly connected to form component A. The open state of component A provides a channel for discharging the balancing liquid 18, and the closed state of component A ensures that the balancing liquid 18 in the main chamber 1 does not leak. The liquid level display tube 7 and the liquid level display tube valve 8-4 are firmly connected to form component B. The open state of component B can query and feedback the capacity of the balancing liquid 18 in the main chamber 1, and the closed state of component B ensures that the balancing liquid 18 in the main chamber 1 does not evaporate and lose. Component A and component B are firmly connected to the transition pipe 5 respectively to form a combined component three. The longitudinal and cross-sectional views of the combined component three are shown in FIG. Figure 11 .

[0066] The control device 13 is installed in the space of the auxiliary box room 2. Figure 1 、 Figure 3 and Figure 6 .

[0067] The main box room 1, the auxiliary box room 2, the combined component 1, the combined component 2, the combined component 3, the auxiliary box room door panel 2-2, the door panel connector 2-3, and the buckle 9 are assembled and connected tightly to form the upper structure of the trestle counterweight device.

[0068] The full-length fixed member 10 is installed at the lower edge of the trestle, and the full-length rubber pad 11 is tightly attached to the fixed member 10. The full-length rubber pad can prevent the displacement of the trestle counterweight device and play a role in shock absorption and seismic isolation. Figures 5 to 8 .

[0069] The upper structure of the trestle counterweight device is moved and inserted into the full-length fixed member 10 to achieve a firm connection between the upper structure of the trestle counterweight device and the trestle. Figures 5 to 8 .

[0070] The counterweight device liquid inlet and outlet 17, the counterweight device liquid inlet and outlet switch 17-2, the liquid storage tank vent pipe 17-3, and the liquid storage tank vent pipe valve 17-4 are firmly connected to form a combined component four, see Figure 12 The surface coating of the liquid inlet and outlet switch 17-2 of the counterweight device is consistent with the color and shape of the ground pavement to ensure beauty.

[0071] The liquid storage tank 16 is firmly connected to the combined component 24 and is buried below the ground to form the lower structure of the trestle counterweight device.

[0072] Liquid storage tank 16 is connected to liquid injection pipe 3 via liquid injection pipe 14; liquid storage tank 16 is connected to liquid discharge port 6 via liquid discharge pipe 15. Control device 13 is connected to stress and strain monitor 12, liquid pump 8-1, vent valve 8-2, discharge port valve 8-3, liquid level display valve 8-4, and liquid storage tank vent valve 17-4 via cables.

[0073] Open the liquid inlet and outlet switch 17-2 of the counterweight device and inject the counterweight liquid 18 as required. After the injection of the counterweight liquid 18 is completed, close the liquid inlet and outlet switch 17-2 of the counterweight device. The control device 13 is turned on and the weight-adjustable trestle counterweight device is in operation. The automated trestle counterweight device adjusts the counterweight in real time according to the changes in the stress and strain of the trestle. Figures 1 to 8 .

[0074] The control device 13 can be a PLC or a single-chip microcomputer, etc., and its control content is: the control device 13 can control the operation and stop of the liquid pump 8-1; the control device 13 can control the opening and closing of the vent pipe valve 8-2, the discharge port valve 8-3, the liquid level display tube valve 8-4 and the liquid storage tank vent pipe valve 17-4.

[0075] The control device 13 monitors the deformation and stress of the trestle structure through the stress and strain monitor 12, and can also monitor the liquid level in the main chamber by arranging an electronic liquid level gauge in the box body and convert it into weight.

[0076] The control device 13 runs the program logic:

[0077] (1) Operation of the trestle counterweight device to increase counterweight. When the stress and strain data fed back to the control device 13 via the stress and strain monitor 12 is less than the minimum stress and strain setting, the drain valve 8-3 is closed, the vent valve 8-2, the liquid level indicator valve 8-4, and the liquid storage tank vent valve 17-4 are opened, and the liquid pump 8-1 is operated, injecting the counterweight liquid 18 from the liquid storage tank 16 into the main chamber 1 via the liquid injection pipe 14. When the stress and strain data fed back to the control device 13 by the stress and strain monitor 12 falls within the appropriate range, the trestle counterweight device stops counterweighting, the liquid pump 8-1 stops, and the vent valve 8-2, the liquid level indicator valve 8-4, and the liquid storage tank vent valve 17-4 are closed. The liquid level indicator 7 displays the volume of the counterweight liquid 18 in the main chamber 1 and feeds this back to the control device 13. The control device's corresponding wireless handheld display 13-2 provides real-time information on the trestle's stress and strain data, as well as the liquid volume and converted weight in the main chamber 1.

[0078] (2) The trestle counterweight device operates to reduce counterweight. The stress and strain data fed back to the control device 13 via the stress and strain monitor 12 is greater than the maximum stress and strain setting value. The liquid pump 8-1 remains in an inoperative state, the vent valve 8-2, the liquid level display valve 8-4, and the liquid storage tank vent valve 17-4 are opened, and the drain valve 8-3 is opened, and the counterweight liquid 18 in the main chamber 1 is discharged into the liquid storage tank 16 through the drain pipe 15. When the stress and strain data fed back to the control device 13 by the stress and strain monitor 12 reaches the appropriate range, the trestle counterweight device stops reducing weight, the drain valve 8-3 is closed, and then the vent valve 8-2, the liquid level display valve 8-4, and the liquid storage tank vent valve 17-4 are closed. The liquid level display tube 7 displays the volume of the counterweight liquid 18 in the main chamber 1 and feeds back to the control device 13. The stress and strain data of the trestle and the volume and converted weight of the liquid in the main chamber 1 can be obtained in real time through the wireless handheld display 13-2 corresponding to the control device.

[0079] Example 2

[0080] The following is a detailed description of embodiment 2 of the present invention with reference to the accompanying drawings.

[0081] This embodiment provides a method for installing a trestle counterweight device with adjustable weight, comprising the following steps:

[0082] See Figure 13 :

[0083] Step 1: Arrange stress and strain monitors 12 on the trestle. Arrange stress and strain monitors 12 according to the stress and deformation characteristics of the trestle.

[0084] Step 2: Design the dimensions of the trestle counterweight system and select the counterweight liquid 18. Calculate and determine the cross-sectional dimensions and lengths of the main chamber 1, auxiliary chamber 2, and liquid storage tank 16. Create a notch at the bottom of the main chamber 1 for connecting the liquid injection pipe 3 and ensure an aesthetically pleasing appearance. Select the appropriate counterweight liquid 18.

[0085] Step 3: Assemble the combined component 1. Assemble the liquid injection pipe 3 and the liquid extraction pump 8-1. After the assembly is completed, check the connection tightness of the combined component 1. The inspection result must be qualified.

[0086] Step 4: Assemble the second assembly component. Assemble the vent pipe 4 and the vent pipe valve 8-2. After the assembly is completed, check the airtightness of the second assembly component. The inspection result must be qualified.

[0087] Step 5: Assemble component three. Assemble drain port 6 and drain port valve 8-3, and securely connect them to transition pipe 5. Assemble liquid level indicator tube 7 and liquid level indicator tube valve 8-4, and securely connect them to transition pipe 5. After assembly, inspect component three for leaks; the inspection must be satisfactory.

[0088] Step 6: Connect the components to form the upper structure of the trestle counterweight device. Make a hole in the notch of the main chamber 1 according to the cross-sectional size of the liquid injection pipe 3, and then firmly connect the composite component 1 to the main chamber 1; make a hole on the side panel of the main chamber 1 according to the cross-sectional size of the ventilation pipe 4, and then firmly connect the composite component 2 to the main chamber 1; make a hole on the side panel of the main chamber 1 according to the cross-sectional size of the transition pipe 5, and then firmly connect the composite component 3 to the main chamber 1, set the buckle 9, and fix the liquid level display tube 7 to the upper side panel of the main chamber 1; firmly connect the auxiliary chamber 2 to the main chamber 1; place the control device 13 at a suitable position in the auxiliary chamber 2; connect the auxiliary chamber door panel 2-2 to the auxiliary chamber 2 through the door panel connector 2-3 to realize the opening and closing function of the auxiliary chamber door panel 2-2.

[0089] Step 7: Connect the trestle counterweight system upper structure to the trestle. Securely connect the full-length fixed member 10 to the lower edge of the trestle, and place the full-length rubber pad 11 snugly against the full-length fixed member 10. Connect the trestle counterweight system upper structure to the trestle via the full-length fixed member 10 and the full-length rubber pad 11.

[0090] Operation 8: Assemble component 4. Assemble the counterweight device liquid inlet and outlet 17, the counterweight device liquid inlet and outlet switch 17-2, the liquid storage tank vent pipe 17-3, and the liquid storage tank vent pipe valve 17-4. After assembly, check the airtightness of component 4. The inspection result must be qualified.

[0091] Operation 9: Connect the components to form the lower structure of the trestle counterweight device. Connect the combined component 4 to the liquid storage tank 16 firmly.

[0092] Operation 10: Connect the upper and lower structures of the trestle counterweight system via pipes, and connect the control device and various control components via cables. The liquid injection pipe 14 connects the liquid storage tank 16 to the liquid injection pipe 3; the liquid discharge pipe 15 connects the liquid storage tank 16 to the liquid discharge port 6. Cables connect the control device 13 to the stress and strain monitor 12, the liquid pump 8-1, the vent valve 8-2, the liquid discharge port valve 8-3, the liquid level display valve 8-4, and the liquid storage tank vent valve 17-4.

[0093] Operation 11: Injecting the balancing liquid. Inject the required balancing liquid 18 through the balancing device liquid inlet and outlet switch 17-2.

[0094] Step 12: Automatically Increase Counterweight Operation—When the monitoring data from the automated trestle counterweight device falls below the warning value, the counterweight increase program is executed. The stress and strain data fed back to the control device 13 via the stress and strain monitor 12 is less than the minimum stress and strain setting, the drain valve 8-3 closes, the vent valve 8-2, the liquid level indicator valve 8-4, and the liquid storage tank vent valve 17-4 open, and the liquid pump 8-1 operates, injecting the counterweight liquid 18 from the liquid storage tank 16 into the main chamber 1 via the liquid injection pipe 14. When the stress and strain data fed back to the control device 13 by the stress and strain monitor 12 falls within the appropriate range, the trestle counterweight device ceases counterweight operation, the liquid pump 8-1 stops, and the vent valve 8-2, the liquid level indicator valve 8-4, and the liquid storage tank vent valve 17-4 close. The liquid level indicator 7 displays the volume of the counterweight liquid 18 in the main chamber 1 and feeds this back to the control device 13. The stress and strain data of the trestle and the volume and converted weight of the liquid in the main chamber 1 can be obtained in real time through the wireless handheld display 13-2 corresponding to the control device.

[0095] Step 13: Automatic Counterweight Reduction Operation - The automated trestle counterweight device monitors data exceeding the warning value, and initiates the counterweight reduction program. The stress and strain data fed back to the control device 13 via the stress and strain monitor 12 exceeds the maximum stress and strain setting. The liquid pump 8-1 remains inactive, the vent valve 8-2, the liquid level indicator valve 8-4, and the liquid storage tank vent valve 17-4 are opened, and the drain valve 8-3 is opened, draining the counterweight liquid 18 in the main chamber 1 into the liquid storage tank 16 via the drain pipe 15. When the stress and strain data fed back to the control device 13 by the stress and strain monitor 12 falls within the appropriate range, the trestle counterweight device ceases weight reduction operations, the drain valve 8-3 closes, and then the vent valve 8-2, the liquid level indicator valve 8-4, and the liquid storage tank vent valve 17-4 close. The liquid level indicator 7 displays the volume of counterweight liquid 18 in the main chamber 1 and provides feedback to the control device 13. The stress and strain data of the trestle and the volume and converted weight of the liquid in the main chamber 1 can be obtained in real time through the wireless handheld display 13-2 corresponding to the control device.

[0096] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0097] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A trestle counterweight device with adjustable weight, characterized in that: It at least comprises a main chamber arranged below the trestle, wherein the main chamber is provided with a liquid injection pipe, a vent pipe and a liquid discharge port; The injection pipe is provided with a liquid pump, and the ventilation pipe and the liquid discharge port are provided with valves.

2. The weight-adjustable trestle counterweight device according to claim 1, characterized in that: A liquid level display device is provided on one side of the main chamber.

3. The weight-adjustable trestle counterweight device according to claim 1, characterized in that: An auxiliary chamber is provided on one side of the main chamber, and a door panel is provided on one side wall of the auxiliary chamber; the liquid level display device is correspondingly located in the auxiliary chamber.

4. The weight-adjustable trestle counterweight device according to claim 1, wherein: A fixing piece is provided below the trestle along the length direction of the trestle, and the main box chamber is fixed below the trestle through the fixing piece; The cross section of the fixing piece is L-shaped or inverted T-shaped; an L-shaped or inverted T-shaped slot is correspondingly provided on the upper surface of the main box chamber; the main box chamber is connected to the fixing piece via the L-shaped or inverted T-shaped slot; A rubber pad is provided on the outer surface of the fixing piece.

5. The weight-adjustable trestle counterweight device according to claim 1, characterized in that: The main chamber bottom plate is provided with a certain slope in the longitudinal direction of the bridge, and the lowest point of the slope of the main chamber bottom plate in the longitudinal direction of the bridge is at the drain port, so as to facilitate the discharge of the counterweight liquid from the drain port.

6. The weight-adjustable trestle counterweight device according to claim 1, characterized in that: A liquid injection notch is concavely provided at the bottom of the main chamber, and the liquid injection pipe is arranged in the liquid injection notch.

7. The weight-adjustable trestle counterweight device according to claim 1, characterized in that: A stress and strain monitor is provided on the trestle; The liquid injection port is connected to a liquid injection pipe, and a controlled liquid pump is provided on the liquid injection pipe; The liquid discharge port is provided with a controlled liquid discharge valve; It also includes a control device for controlling the controlled liquid pump to inject water into the main tank chamber or controlling the controlled liquid discharge valve to discharge water from the main tank chamber according to the signal of the stress and strain monitor.

8. The weight-adjustable trestle counterweight device according to claim 7, characterized in that: It also includes a water tank, and the injection pipe is connected to the water tank; the water outlet of the controlled drain valve is provided with a drain pipe, and the water outlet of the drain pipe is connected to the water tank.

9. A method for installing the weight-adjustable trestle counterweight device according to any one of claims 1 to 8, characterized in that: The method comprises the following steps, (1): Arrange stress and strain monitors on the trestle; (2): Determine the shape, size and selected balancing fluid of the trestle balancing device according to the balancing weight requirements of the trestle design and the aesthetic requirements of the landscape; (3): The liquid injection tube and the liquid extraction pump are assembled to form a combined component 1; (4): The vent pipe and the vent pipe valve are assembled to form a second combined component; (5): The liquid discharge port and the liquid discharge port valve, the transition pipe, the liquid level display tube and the liquid level display tube valve are assembled to form a combined component three; (6): Holes are opened on the main chamber according to the sizes of the liquid injection pipe, the vent pipe, and the transition pipe, and then the combination component 1, the combination component 2, and the combination component 3 are connected to the main chamber tightly and firmly respectively; the liquid level display tube is firmly connected to the main chamber through a buckle, the main chamber sealing door is connected to the main chamber through a sealing door connector, the auxiliary chamber door panel is connected to the auxiliary chamber through a door panel connector, and the control device is installed in the auxiliary chamber to form the upper structure of the trestle counterweight device; (7): The upper structure of the trestle counterweight device is connected to the trestle through a full-length fixed member firmly connected to the lower edge of the trestle and a full-length rubber pad; (8): The liquid inlet and outlet of the counterweight device, the liquid inlet and outlet switch of the counterweight device, the vent pipe of the liquid storage tank and the vent pipe valve of the liquid storage tank are firmly connected to form a combined component four; (9): The liquid storage tank is connected to the combined component 4 and buried below the ground to form the lower structure of the trestle counterweight device; (10): The liquid injection pipe connects the liquid storage box and the liquid injection pipe, and the liquid discharge pipe connects the liquid storage box and the liquid discharge port; the cables connect the control device to the stress and strain monitor, the liquid pump, the vent pipe valve, the liquid discharge port valve, the liquid height display pipe valve, and the liquid storage box vent pipe valve respectively; (11): Inject the balancing liquid from the liquid inlet and outlet of the balancing device to form a complete trestle balancing device with adjustable weight; (12): The valve of the trestle counterweight device is adjusted by the control device, and the liquid pump is started to extract the counterweight liquid from the liquid storage tank into the main box chamber, thereby increasing the trestle counterweight; or the valve of the trestle counterweight device and the liquid pump are adjusted by the control device to discharge the counterweight liquid from the main box chamber into the liquid storage tank, thereby reducing the trestle counterweight; When the trestle is adding counterweight, the valve of the liquid discharge port is in the closed state, the valve of the vent pipe, the valve of the liquid level display pipe and the valve of the vent pipe of the liquid storage tank are all in the open state, and the liquid pump is running; after the counterweight device of the trestle reaches the required weight, the liquid pump stops running, and the valve of the liquid discharge port, the valve of the vent pipe, the valve of the liquid level display pipe and the valve of the vent pipe of the liquid storage tank should all be in the closed state; When the trestle reduces its counterweight, the liquid pump is in a stopped state, the vent pipe valve, the liquid level display pipe valve and the liquid storage tank vent pipe valve are in an open state, and the discharge port valve is open; after the trestle counterweight device has reached the required weight, the discharge port valve, the vent pipe valve, the liquid level display pipe valve and the liquid storage tank vent pipe valve should all be in a closed state.

10. A method for adjusting a weight-adjustable trestle counterweight device, characterized in that: The method includes: (1) Real-time monitoring of the trestle through stress and strain monitors; (2) When the stress and strain data monitored by the stress and strain monitor is less than the minimum stress and strain setting value, the drain valve is closed, the vent valve, the liquid level display valve, and the liquid storage tank vent valve are opened, and the liquid pump is operated to inject a predetermined amount of the weight liquid in the liquid storage tank into the main tank chamber through the injection pipe; (3) When the stress and strain data monitored by the stress and strain monitor is greater than the maximum stress and strain setting value, the liquid pump remains in a non-operating state, the vent pipe valve, the liquid height display pipe valve, and the liquid storage tank vent pipe valve are opened, and the drain port valve is opened to discharge a predetermined amount of counterweight liquid in the main chamber into the liquid storage tank through the drain pipe; (4) After a predetermined time has passed since step (2) or step (3) was executed once, the process returns to step (1).

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