Hydraulic power device and power system for bridge fabrication machine

Abstract

The invention relates to the field of hydraulic units, and discloses a hydraulic power device and a power system for a bridge fabrication machine. Comprising a support, an oil tank, a hydraulic pump, an overflow valve, an oil tank oil filtering mechanism, a control valve and a pump oil filtering mechanism, wherein the oil tank and the hydraulic pump are fixedly mounted on the support; the overflow valve is connected between the oil tank and the hydraulic pump; the pump oil filtering mechanism is additionally arranged between the hydraulic pump and the control valve, oil output by the hydraulic pump can be filtered, and under the condition that an oil filtering channel is not replaced, the oil circulation amount of the channel is continuously and automatically balanced according to the impurity accumulation amount; when the channel cannot be expanded after collecting quantitative impurities, a new oil filtering channel can be quickly switched to an oil flowing path, and the oil filtering channel full of the impurities is cleaned, so that the service life of equipment can be greatly prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of hydraulic units, and more specifically, to a hydraulic power device and a power system for a bridge-building machine. Background Art

[0002] With the continuous development of railway construction and the continuous improvement of intelligent construction level, more and more intelligent cantilever bridge-building machines are used in the cantilever casting of continuous beams of railway bridges.

[0003] The continuous beam intelligent bridge-building machine is composed of a load-bearing structure, a suspension system, an anchoring system, a traveling system, a protection system, and an intelligent control system. The load-bearing structure is the main load-bearing component of the bridge-building machine. It bears the entire weight of the construction equipment and cast-in-place segmental concrete, and transmits the load to the completed beam through the fulcrum and anchoring device. After the pouring is completed, the main beam and track of the bridge-building machine automatically move forward and are fixed to carry out the construction of the next segment, and the cycle continues until the cantilever pouring is completed.

[0004] The hydraulic system is the control core of the continuous beam intelligent bridge-building machine, which includes the control of the walking system, the adjustment of the template, etc., all of which need to be controlled by the hydraulic power system. At present, the hydraulic power core devices of the hydraulic power system are mostly hydraulic units. Common hydraulic units only have impurity filtering mechanisms in the oil tank. However, in the process of conveying oil, the hydraulic pump will produce functional friction loss, thereby generating metal debris impurities, which will flow through various components along the oil channel and then flow back to the oil tank. In this process, the impurities will affect the various components in the entire oil flow path, and there is a probability that the moving stroke accuracy of various structural parts of the bridge-building machine will be affected. Summary of the invention

[0005] The purpose of the present invention is to provide a hydraulic power device and a power system for a bridge-building machine in order to solve the above-mentioned problems.

[0006] The present invention provides a hydraulic power device for a bridge-building machine, comprising a bracket, an oil tank and a hydraulic pump fixedly mounted on the bracket, a relief valve connected between the oil tank and the hydraulic pump, an oil tank oil filter mechanism and a control valve connected to the oil tank, and a pump oil filter mechanism connected between the hydraulic pump and the control valve, wherein the pump oil filter mechanism is used to filter the oil pumped from the hydraulic pump to the control valve; The pump oil filtering mechanism includes an oil transmission component, a spliced ​​oil filter component arranged inside the oil transmission component, a plurality of impurity accumulation detection components arranged on the spliced ​​oil filter component, and an energy storage switching component arranged between the oil transmission component and the spliced ​​oil component; The input end of the oil transmission component is connected to the output end of the hydraulic pump, and its output end is connected to the input end of the control valve. The spliced ​​oil filter component is provided with a plurality of filter channels, and the two ends of the filter channels at the set positions in the oil transmission component are respectively connected to the input end and the output end of the oil transmission component to form a complete oil flow path. The impurity accumulation amount detection component is used to obtain the impurity accumulation amount in the corresponding filter channel in the spliced ​​oil filter component, and the energy storage switching component is used to switch the filter channel in the complete oil flow path.

[0007] As a further optimization scheme of the present invention, the oil transmission component includes a shell, a first oil inlet pipe and a first oil outlet pipe symmetrically connected to the shell, the other end of the first oil inlet pipe is connected to the output end of the hydraulic pump, and the other end of the first oil outlet pipe is connected to the input end of the control valve.

[0008] As a further optimization scheme of the present invention, the spliced ​​oil filter assembly includes a multi-channel filter assembly and a plurality of extended oil filter assemblies arranged on the multi-channel filter assembly, and the plurality of extended oil filter assemblies are evenly distributed on the multi-channel filter assembly.

[0009] As a further optimization scheme of the present invention, the multi-channel filter assembly includes a rotating shaft movably connected at the middle position of the shell, a connecting rod connected to the rotating shaft, an inner ring body and an outer ring body coaxially arranged with the rotating shaft, a plurality of partition plates connected between the outer ring body and the inner ring body, and a fan-shaped filter plate arranged between two adjacent partition plates, sliders are connected to the two side walls of the fan-shaped filter plate, and the partition plates are provided with slide grooves matching the corresponding sliders. The cross-sectional area of ​​the fan-shaped filter plate is larger than the cross-sectional area of ​​the first oil inlet pipe, and a filter channel is formed between the outer ring body, the inner ring body and the two adjacent partition plates. The fan-shaped filter plate in the corresponding filter channel is used to filter the oil flowing through the filter channel.

[0010] As a further optimization scheme of the present invention, the extended oil filter assembly includes a plurality of arc-shaped expansion grooves arranged on the inner circular surface of the outer ring body and an arc-shaped filter plate fixedly connected to the opening of the arc-shaped expansion groove, the plurality of the arc-shaped expansion grooves are evenly distributed, and the arc-shaped expansion grooves are located between two adjacent partition plates, the fan-shaped filter plate is tightly fitted with the arc-shaped filter plate, and the arc-shaped expansion groove is connected to the corresponding filter channel.

[0011] As a further optimization scheme of the present invention, the impurity accumulation detection component includes a telescopic bag and a telescopic spring connected between the slider and the inner wall of the slide groove, a connecting channel provided inside the partition plate and the outer ring body, and a pressure sensor connected to the outer circular surface of the outer ring body. The internal space of the telescopic bag is connected to the pressure sensor through the connecting channel, and the pressure sensor is connected to the control terminal signal.

[0012] As a further optimization scheme of the present invention, the energy storage switching assembly includes a motor connected to the shell, a driving cylinder connected to the output shaft end of the motor, a torsion spring connected between the driving cylinder and the rotating shaft, a fixed cylinder fixedly connected to the inner wall of the shell, a plurality of fixed blades fixedly connected to the inner circular surface of the fixed cylinder, and a plurality of plastic blades fixedly connected to the rotating shaft, a plurality of the fixed blades are equiangularly distributed on the inner circular surface of the fixed cylinder, a plurality of the plastic blades are equiangularly distributed on the outer circular surface of the rotating shaft, and the fixed cylinder and the plastic blades can contact each other.

[0013] As a further optimization scheme of the present invention, an oil recoil cleaning component is provided on the oil transmission component, and the oil recoil cleaning component is used for back-flushing the filter channel switched out from the complete oil flow path.

[0014] As a further optimization scheme of the present invention, the oil recoil cleaning assembly includes a second oil inlet pipe and a second oil outlet pipe symmetrically connected to the shell, the second oil inlet pipe is located below the first oil outlet pipe, and the second oil outlet pipe is located below the first oil inlet pipe.

[0015] A hydraulic power system for a bridge-building machine comprises the hydraulic power device for the bridge-building machine as described above, a plurality of oil pipelines and a plurality of execution units, wherein the plurality of execution units are respectively connected to the hydraulic power device for the bridge-building machine via a plurality of oil pipelines; the execution unit comprises a hydraulic cylinder and a connecting piece connected to the output end of the hydraulic cylinder.

[0016] The beneficial effects of the present invention are as follows: the present invention adds an oil pump filter mechanism between the hydraulic pump and the control valve, which can filter the oil output by the hydraulic pump, and automatically balance the oil flow rate of the channel according to the amount of impurity accumulation without replacing the oil filter channel. When the channel cannot be expanded after collecting a certain amount of impurities, a new oil filter channel can be quickly switched to the oil flow path, and the oil filter channel filled with impurities can be cleaned, which can greatly improve the service life of the equipment and reduce maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The present invention Figure 1 A partial cross-sectional view of Figure 3 It is a structural schematic diagram of the pump oil filtering mechanism of the present invention; Figure 4 The present invention Figure 3 A magnified view of point A in FIG. Figure 5 The present invention Figure 3 A magnified view of point B in FIG. Figure 6 The present invention Figure 3 A magnified view of point C in FIG. Figure 7 The present invention Figure 3 A cross-sectional view at II in FIG. Figure 8 The present invention Figure 7 Magnified view at D in FIG.

[0018] In the figure: 1. bracket; 2. oil tank; 3. hydraulic pump; 4. oil tank oil filter mechanism; 5. overflow valve; 6. pump oil filter mechanism; 601. shell; 602. first oil inlet pipe; 603. first oil outlet pipe; 604. outer ring body; 605. partition plate; 606. inner ring body; 607. fan-shaped filter plate; 608. slide groove; 609. slider; 610. telescopic capsule; 611. telescopic spring; 612. arc expansion groove; 613. arc filter plate; 614. pressure sensor; 615. motor; 616. drive cylinder; 617. torsion spring; 618. rotating shaft; 619. connecting rod; 620. fixed cylinder; 621. fixed blade; 622. plastic blade; 623. second oil inlet pipe; 624. second oil outlet pipe; 7. control valve. DETAILED DESCRIPTION

[0019] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only intended to enable those skilled in the art to better understand and implement the subject matter described herein. In addition, the features described relative to some examples may also be combined in other examples.

[0020] like Figure 1-Figure 8 As shown, a hydraulic power device for a bridge-building machine comprises a bracket 1, an oil tank 2 and a hydraulic pump 3 fixedly mounted on the bracket 1, an overflow valve 5 connected between the oil tank 2 and the hydraulic pump 3, an oil tank oil filter mechanism 4 and a control valve 7 connected to the oil tank 2, and a pump oil filter mechanism 6 connected between the hydraulic pump 3 and the control valve 7, wherein the pump oil filter mechanism 6 is used to filter the oil pumped from the hydraulic pump 3 to the control valve 7; The pump oil filter mechanism 6 includes an oil transmission component, a spliced ​​oil filter component disposed inside the oil transmission component, a plurality of impurity accumulation detection components disposed on the spliced ​​oil filter component, and an energy storage switching component disposed between the oil transmission component and the spliced ​​oil component; The input end of the oil transmission component is connected to the output end of the hydraulic pump 3, and its output end is connected to the input end of the control valve 7. The spliced ​​oil filter component is provided with a plurality of filter channels, and the two ends of the filter channels at the set positions in the oil transmission component are respectively connected to the input end and the output end of the oil transmission component to form a complete oil flow path. The impurity accumulation amount detection component is used to obtain the impurity accumulation amount in the corresponding filter channel in the spliced ​​oil filter component, and the energy storage switching component is used to switch the filter channel in the complete oil flow path.

[0021] It should be noted that when the hydraulic pump 3 pumps the oil in the oil tank 2 out and delivers it to the control valve 7, the oil is first input from the input end of the oil transmission component, and after flowing through the corresponding spliced ​​oil filter component, it enters the control valve 7 from the output end of the oil transmission component, and the control valve 7 controls the oil to be delivered to the corresponding actuator. During the flow of this oil, the spliced ​​oil filter component self-adjusts the oil to filter it. Under the premise of ensuring that the flow rate and flow velocity remain unchanged, the impurities generated in the hydraulic pump 3 can be fully filtered, effectively preventing the impurities from causing irreversible damage to the actuator and other components during the subsequent oil flow process. damage, thereby effectively improving the service life of the entire unit. When one of the filter channels of the spliced ​​oil filter component is in the oil flow path, the amount of impurities filtered and accumulated in the filter channel can be monitored in real time through the impurity accumulation detection component. When the impurities accumulate too much and may affect the oil flow rate and flow, the spliced ​​oil filter component is quickly switched to the filter channel in the oil flow path through the energy storage switching component. This process needs to be carried out when the unit stops supplying oil. Through the rapid switching of the energy storage switching component, the impurities in the switched filter channel can be effectively reduced from flowing back into the hydraulic pump 3.

[0022] In one embodiment of the present invention, Figure 3 As shown, the oil transmission component includes a housing 601, a first oil inlet pipe 602 and a first oil outlet pipe 603 symmetrically connected to the housing 601, the other end of the first oil inlet pipe 602 is connected to the output end of the hydraulic pump 3, and the other end of the first oil outlet pipe 603 is connected to the input end of the control valve 7.

[0023] It should be noted that when the hydraulic pump 3 is operating, the oil pumped out from the oil tank 2 is output from the output end of the hydraulic pump 3, flows through the first oil inlet pipe 602, one of the filter channels on the spliced ​​oil filter assembly and the first oil outlet pipe 603 in sequence, and then enters the control valve 7. The specific delivery path of the oil is controlled by the control valve 7 to control one or more execution units to work.

[0024] In one embodiment of the present invention, Figure 3-Figure 4 as well as Figure 6-Figure 7As shown, the spliced ​​oil filter assembly includes a multi-channel filter assembly and a plurality of extended oil filter assemblies arranged on the multi-channel filter assembly, and the plurality of extended oil filter assemblies are evenly distributed on the multi-channel filter assembly.

[0025] The multi-channel filter assembly includes a rotating shaft 618 movably connected at the middle position of the shell 601, a connecting rod 619 connected to the rotating shaft 618, an inner ring body 606 and an outer ring body 604 coaxially arranged with the rotating shaft 618, a plurality of partition plates 605 connected between the outer ring body 604 and the inner ring body 606, and a fan-shaped filter plate 607 arranged between two adjacent partition plates 605, sliders 609 are connected to the two side walls of the fan-shaped filter plate 607, and the partition plate 605 is provided with a slide groove 608 that matches the corresponding slider 609. The cross-sectional area of ​​the fan-shaped filter plate 607 is larger than the cross-sectional area of ​​the first oil inlet pipe 602. A filter channel is formed between the outer ring body 604, the inner ring body 606 and the two adjacent partition plates 605. The fan-shaped filter plate 607 in the corresponding filter channel is used to filter the oil flowing through the filter channel.

[0026] The extended oil filter assembly includes a plurality of arc-shaped extension grooves 612 provided on the inner circular surface of the outer ring body 604 and an arc-shaped filter plate 613 fixedly connected to the opening of the arc-shaped extension grooves 612. The plurality of arc-shaped extension grooves 612 are evenly distributed, and the arc-shaped extension grooves 612 are located between two adjacent partition plates 605. The fan-shaped filter plate 607 is tightly fitted with the arc-shaped filter plate 613, and the arc-shaped extension grooves 612 are connected to the corresponding filter channels.

[0027] It should be noted that, as mentioned above, when the oil is stably filtered through the spliced ​​oil filter assembly, after the oil enters from the first oil inlet pipe 602, it flows through the filter channel formed by the outer ring body 604, the inner ring body 606 and the two adjacent partition plates 605, and is fully filtered by the fan-shaped filter plate 607 in the filter channel. The filtered impurities are in the area between the fan-shaped filter plate 607 and the first oil inlet pipe 602. As the accumulation amount increases, the oil impact force on the fan-shaped filter plate 607 gradually increases. At this time, Under the action of the impact force, the fan-shaped filter plate 607 continuously moves toward the direction of the first oil outlet pipe 603. At this time, the fan-shaped filter plate 607 moves to the area of ​​the arc filter plate 613. The oil can flow into the arc expansion groove 612 from the area of ​​the arc filter plate 613 between the fan-shaped filter plate 607 and the first oil inlet pipe 602. The oil flowing through the arc expansion groove 612 flows out from the area of ​​the arc filter plate 613 between the fan-shaped filter plate 607 and the first oil outlet pipe 603, and enters the control valve 7 from the first oil outlet pipe 603. As the flow of oil stops, the fan-shaped filter plate 607 can be reset to a certain extent under the rebound action of the impurity accumulation detection component, and the arc expansion groove 612 in the area between the fan-shaped filter plate 607 and the first oil inlet pipe 602 can be scraped and cleaned, thereby further improving its filtering efficiency. Until when the impurity accumulation detection component detects that the amount of impurity accumulation between the fan-shaped filter plate 607 and the first oil inlet pipe 602 reaches a set value during the oil circulation process, the hydraulic pump 3 is stopped at this time, and the energy storage switching component drives the rotating shaft 618 to rotate quickly by 90°, so that the filter channel with excessive accumulation is switched out of the oil circulation path, and the filter channel without impurities is switched to the oil circulation path, thereby continuing to achieve stable filtering processing.

[0028] In one embodiment of the present invention, Figure 3 As shown, the impurity accumulation detection component includes a telescopic bag 610 and a telescopic spring 611 connected between the slider 609 and the inner wall of the slide groove 608, a connecting channel arranged inside the partition plate 605 and the outer ring body 604, and a pressure sensor 614 connected to the outer circular surface of the outer ring body 604. The internal space of the telescopic bag 610 is connected to the pressure sensor 614 through the connecting channel, and the pressure sensor 614 is connected to the control terminal signal.

[0029] It should be noted that, as mentioned above, as the fan-shaped filter plate 607 moves toward the direction of the first oil outlet pipe 603, it can drive the slider 609 slidably connected in the slide groove 608 to move in the same direction and distance. As the slider 609 moves, the telescopic sac 610 connected between the slide groove 608 and the inner wall of the telescopic sac 610 is continuously compressed, its internal volume is reduced, the gas or liquid inside is gradually compressed, and the pressure component increases. The internal pressure value can be monitored in real time by the pressure sensor 614. When the pressure value reaches the set value, it means that the moving stroke of the slider 609 has reached the limit position. At this time, the energy storage switching component can be used to drive the rotating shaft 618 to rotate quickly 90°, thereby realizing the switching of the filter channel.

[0030] In one embodiment of the present invention, Figure 3 , Figure 5-Figure 8 As shown, the energy storage switching assembly includes a motor 615 connected to a housing 601, a driving cylinder 616 connected to an output shaft end of the motor 615, a torsion spring 617 connected between the driving cylinder 616 and a rotating shaft 618, a fixed cylinder 620 fixedly connected to the inner wall of the housing 601, a plurality of fixed blades 621 fixedly connected to the inner circular surface of the fixed cylinder 620, and a plurality of plastic blades 622 fixedly connected to the rotating shaft 618, wherein the plurality of fixed blades 621 are equiangularly distributed on the inner circular surface of the fixed cylinder 620, and the plurality of plastic blades 622 are equiangularly distributed on the outer circular surface of the rotating shaft 618, and the fixed cylinder 620 and the plastic blades 622 may contact each other.

[0031] It should be noted that when the rotating shaft 618 is driven to rotate 90° quickly, the driving cylinder 616 is driven by the motor 615 to rotate the set angle. As the driving cylinder 616 rotates, the torsion spring 617 connected between the driving cylinder 616 and the rotating shaft 618 applies a rotational torque to the rotating shaft 618. However, at this time, the rotating shaft 618 is limited by the plastic blade 622 and the fixed blade 621. When the torque generated by the deformation of the torsion spring 617 does not cause sufficient deformation of the plastic blade 622, the rotating shaft 618 is stable. It is in a small angle of rotation, and the filter channel is not switched at this time until the torque generated by the torsion spring 617 drives the deformation of the plastic blade 622 to be sufficient to make the plastic blade 622 slide over the corresponding contacting fixed blade 621. At this time, the driving cylinder 616 is in a stable state, and the rotating shaft 618 quickly rotates 90° under the reset energy release action of the torsion spring 617, so that the filter channel is quickly switched, which can effectively prevent the impurities from being pushed back into the hydraulic pump 3 when the telescopic spring 611 is reset.

[0032] In one embodiment of the present invention, Figure 3 As shown, an oil backwash cleaning component is provided on the oil transmission component, and the oil backwash cleaning component is used for backwashing the filter channel switched out from the complete oil flow path.

[0033] The oil recoil cleaning assembly includes a second oil inlet pipe 623 and a second oil outlet pipe 624 symmetrically connected to the housing 601 . The second oil inlet pipe 623 is located below the first oil outlet pipe 603 , and the second oil outlet pipe 624 is located below the first oil inlet pipe 602 .

[0034] It should be noted that, as mentioned above, the filter channel switched to a state of connection with the second oil inlet pipe 623 and the second oil outlet pipe 624 can, in the case of reverse flushing, be combined with the resetting of the telescopic spring 611 to effectively clean up the impurities in the area between the fan-shaped filter plate 607 and the second oil outlet pipe 624, thereby allowing the filter channel to be recycled.

[0035] In one embodiment of the present invention, a hydraulic power system for a bridge-building machine includes the hydraulic power device for the bridge-building machine as described above, a plurality of oil pipelines and a plurality of execution units, wherein the plurality of execution units are respectively connected to the hydraulic power device for the bridge-building machine through a plurality of oil pipelines; the execution unit includes a hydraulic cylinder and a connecting piece connected to the output end of the hydraulic cylinder.

[0036] It should be noted that the hydraulic cylinder and other components are directly connected to the corresponding components of the bridge-building machine through connecting parts, such as the side form demoulding system. The outer sliding beam is hoisted to the exact position inside the side form frame (generally at the vertical center of the side form), and the front end of the sliding beam is made to extend beyond the end face of the outer form by a certain length. The sliding beam is then properly fixed, and the outer form and the outer sliding beam are lifted together. After hoisting into place, the lifting hydraulic cylinder at the lower end of the outer sliding beam and the lateral translation hydraulic cylinder are installed. Repeat the above method to install the other side of the side form and the outer sliding beam. The oil pipeline controls the extension and retraction of the hydraulic cylinder. The hydraulic cylinder extends when oil is introduced and shortens when oil is returned.

[0037] The present embodiment is described above, but the present embodiment is not limited to the above-mentioned specific implementation manner. The above-mentioned specific implementation manner is merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, which are all within the protection of the present embodiment.

Claims

1. A hydraulic power device for a bridge-building machine, characterized in that: The invention comprises a bracket (1), an oil tank (2) and a hydraulic pump (3) fixedly mounted on the bracket (1), an overflow valve (5) connected between the oil tank (2) and the hydraulic pump (3), an oil tank oil filter mechanism (4) and a control valve (7) connected to the oil tank (2), and a pump oil filter mechanism (6) connected between the hydraulic pump (3) and the control valve (7), wherein the pump oil filter mechanism (6) is used to filter the oil pumped by the hydraulic pump (3) to the control valve (7); The pump oil filtering mechanism (6) comprises an oil transmission component, a spliced ​​oil filtering component arranged inside the oil transmission component, a plurality of impurity accumulation amount detection components arranged on the spliced ​​oil filtering component, and an energy storage type switching component arranged between the oil transmission component and the spliced ​​oil component; The input end of the oil transmission component is connected to the output end of the hydraulic pump (3), and the output end is connected to the input end of the control valve (7). The spliced ​​oil filter component is provided with a plurality of filter channels, and the two ends of the filter channels at set positions in the oil transmission component are respectively connected to the input end and the output end of the oil transmission component to form a complete oil flow path. The impurity accumulation amount detection component is used to obtain the impurity accumulation amount in the corresponding filter channel in the spliced ​​oil filter component, and the energy storage type switching component is used to switch the filter channel in the complete oil flow path.

2. A hydraulic power device for a bridge-building machine according to claim 1, characterized in that: The oil transmission component comprises a housing (601), a first oil inlet pipe (602) and a first oil outlet pipe (603) symmetrically connected to the housing (601), the other end of the first oil inlet pipe (602) being connected to the output end of the hydraulic pump (3), and the other end of the first oil outlet pipe (603) being connected to the input end of the control valve (7).

3. A hydraulic power device for a bridge-building machine according to claim 2, characterized in that: The spliced ​​oil filter assembly comprises a multi-channel filter assembly and a plurality of extended oil filter assemblies arranged on the multi-channel filter assembly, and the plurality of extended oil filter assemblies are evenly distributed on the multi-channel filter assembly.

4. A hydraulic power device for a bridge-building machine according to claim 3, characterized in that: The multi-channel filter assembly comprises a rotating shaft (618) movably connected to the middle of the housing (601), a connecting rod (619) connected to the rotating shaft (618), an inner ring body (606) and an outer ring body (604) coaxially arranged with the rotating shaft (618), a plurality of partition plates (605) connected between the outer ring body (604) and the inner ring body (606), and a fan-shaped filter plate (607) arranged between two adjacent partition plates (605), wherein the fan-shaped filter plate (607) Slide blocks (609) are connected to both side walls of the filter housing, a slide groove (608) matching the corresponding slide block (609) is provided on the partition plate (605), the cross-sectional area of ​​the fan-shaped filter plate (607) is larger than the cross-sectional area of ​​the first oil inlet pipe (602), a filter channel is formed between the outer ring body (604), the inner ring body (606) and two adjacent partition plates (605), and the fan-shaped filter plate (607) in the corresponding filter channel is used to filter the oil flowing through the filter channel.

5. A hydraulic power device for a bridge-building machine according to claim 4, characterized in that: The extended oil filter assembly comprises a plurality of arc-shaped extension grooves (612) arranged on the inner circular surface of the outer ring body (604) and an arc-shaped filter plate (613) fixedly connected to the opening of the arc-shaped extension grooves (612); the plurality of arc-shaped extension grooves (612) are evenly distributed, and the arc-shaped extension groove (612) is located between two adjacent partition plates (605); the fan-shaped filter plate (607) is tightly fitted with the arc-shaped filter plate (613); and the arc-shaped extension groove (612) is connected to a corresponding filter channel.

6. A hydraulic power device for a bridge-building machine according to claim 5, characterized in that: The impurity accumulation detection component comprises a telescopic capsule (610) and a telescopic spring (611) connected between the slider (609) and the inner wall of the slide groove (608), a communicating channel provided inside the partition plate (605) and the outer ring body (604), and a pressure sensor (614) connected to the outer circumferential surface of the outer ring body (604); the internal space of the telescopic capsule (610) is connected to the pressure sensor (614) through the communicating channel, and the pressure sensor (614) is connected to the control terminal signal.

7. A hydraulic power device for a bridge-building machine according to claim 6, characterized in that: The energy storage switching assembly comprises a motor (615) connected to a housing (601), a driving cylinder (616) connected to an output shaft end of the motor (615), a torsion spring (617) connected between the driving cylinder (616) and a rotating shaft (618), a fixed cylinder (620) fixedly connected to the inner wall of the housing (601), a plurality of fixed blades (621) fixedly connected to the inner circumferential surface of the fixed cylinder (620), and a plurality of plastic blades (622) fixedly connected to the rotating shaft (618), wherein the plurality of fixed blades (621) are equiangularly distributed on the inner circumferential surface of the fixed cylinder (620), and the plurality of plastic blades (622) are equiangularly distributed on the outer circumferential surface of the rotating shaft (618), and the fixed cylinder (620) and the plastic blades (622) can contact each other.

8. A hydraulic power device for a bridge-building machine according to claim 7, characterized in that: The oil transmission component is provided with an oil backwash cleaning component, and the oil backwash cleaning component is used for backwashing the filter channel switched out from the complete oil flow path.

9. A hydraulic power device for a bridge-building machine according to claim 8, characterized in that: The oil recoil cleaning assembly comprises a second oil inlet pipe (623) and a second oil outlet pipe (624) symmetrically connected to the housing (601); the second oil inlet pipe (623) is located below the first oil outlet pipe (603); and the second oil outlet pipe (624) is located below the first oil inlet pipe (602).

10. A hydraulic power system for a bridge-building machine, characterized in that: It comprises a hydraulic power device for a bridge-building machine as described in any one of claims 1 to 9, a plurality of oil pipelines and a plurality of execution units, wherein the plurality of execution units are respectively connected to the hydraulic power device for a bridge-building machine through a plurality of oil pipelines; the execution unit comprises a hydraulic cylinder and a connecting piece connected to the output end of the hydraulic cylinder.

Images