Hydraulic system and self-climbing reaction frame

Abstract

The utility model provides a hydraulic system and a self-climbing reaction frame, and particularly relates to the technical field of detection equipment reaction frames, the hydraulic system comprises an oil conveying assembly, a two-position three-way valve connected with the oil conveying assembly, a jacking cylinder connected with one position of the two-position three-way valve through a jacking loop, and a loading cylinder connected with the other position of the two-position three-way valve through a loading loop; according to the self-climbing reaction frame adopting the hydraulic system, the ascending and descending work of the cross beam and the stretching and retracting work of the loading cylinder can be realized; wherein the jacking cylinder is matched with the hydraulic system to realize the ascending and descending work of the cross beam, and the ascending or descending of the cross beam can synchronously adjust the position of the loading cylinder, so that the equipment can carry out loading test on objects with different heights, and the applicability of the equipment is improved; compared with a lead screw, the mode that the jacking cylinder drives the cross beam to ascend and descend is adopted, the cost is low, meanwhile, the jacking cylinder and the loading cylinder share the same oil source, and the cost of the device is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a hydraulic system and a self-climbing reaction frame. Background Art

[0002] The reaction frame mainly consists of a cross beam, columns, a base, a lifting system, a hydraulic system, adjusting pads, etc. It is mainly used for the calibration of jacks and can also be used for the compressive testing of various materials such as large concrete components and large workpieces;

[0003] Most of the existing reaction frames do not have a climbing function. When it is necessary to adjust the height of the cross beam of the reaction frame itself, additional work is usually required, such as forklifts, overhead cranes, etc.;

[0004] Of course, some existing reaction frames also use lead screws to adjust the climbing of the cross beam height. For example, a patent with the publication number CN220932624U discloses a loadable simple reaction frame device, including a bottom plate, a reaction cross beam, a tension and compression sensor, a spirit level, and pads. There are two threaded holes on the bottom plate, and first screws are installed in both of the two threaded holes. There are two first through holes corresponding to the first screws on the reaction cross beam, and the reaction cross beam is slidably connected to the first screws through the first through holes. A first upper adjusting nut and a first lower adjusting nut are respectively installed on the two first screws, and the reaction cross beam is located between the first upper adjusting nut and the first lower adjusting nut; there is also a second through hole on the reaction cross beam between the two first through holes, a second screw is arranged in the second through hole, and a second upper adjusting nut located above the reaction cross beam and a second lower adjusting nut located below the reaction cross beam are installed on the second screw; the tension and compression sensor is sleeved on the second screw and below the reaction cross beam, the spirit level is arranged on the reaction cross beam, and the pads are arranged on the bottom plate; in this patent, the height of the cross beam and the loading cylinder is adjusted by rotating the screw. However, due to the heavy weight of the cross beam itself, generally, an electric motor needs to be used when rotating the screw. Similarly, there are also reaction frames with lead screws driving the cross beam to rise and fall. These two types of reaction frames usually need to be equipped with an electric motor and a jacking cylinder, which increases the manufacturing cost of the reaction frame itself to a certain extent.

[0005] Therefore, it is necessary to design a climbing system with low cost and a reaction frame using this system. Summary of the Utility Model

[0006] In order to solve the above problems, the utility model proposes a hydraulic system and a self-climbing reaction frame to more precisely solve the above problems.

[0007] The utility model is realized through the following technical solutions:

[0008] The present utility model provides a hydraulic system, which includes an oil delivery assembly, a two-position three-way valve connected to the oil delivery assembly, a lifting cylinder connected to one position of the two-position three-way valve through a lifting circuit, and a loading cylinder connected to the other position of the two-position three-way valve through a loading circuit.

[0009] Further, the loading circuit of the present utility model includes a first multi-head connection end connected to one position of the two-position three-way valve, a throttle valve connected to the output end of the first multi-head connection end, a first three-position four-way valve connected to the output end of the throttle valve, and the first three-position four-way valve is connected to the lifting cylinder through a flow dividing valve.

[0010] Further, another output end of the first multi-head connection end is connected with a first overflow valve.

[0011] Further, the loading circuit of the present utility model includes a check valve connected to the other position of the two-position three-way valve, a second multi-head connection end connected to the check valve, and the loading cylinder connected to the second multi-head connection end through a second three-position four-way valve.

[0012] Further, a third multi-head connection end is connected to another output end of the second multi-head connection end, and a second overflow valve is connected to the output end of the third multi-head connection end.

[0013] Further, an accumulator is connected to another output end of the second multi-head connection end.

[0014] Further, the oil delivery assembly of the present utility model includes an oil source, a filter connected to the output end of the oil source, an oil pump connected to the filter, and the output end of the oil pump is connected to the two-position three-way valve through a fourth multi-head connection end.

[0015] Further, a third overflow valve is connected to another output end of the fourth multi-head connection end.

[0016] Further, the oil source includes an input end and a recovery end, and the recovery end is connected to the first overflow valve, the second overflow valve, the third overflow valve, the first three-position four-way valve and the second three-position four-way valve.

[0017] A self-climbing reaction frame includes a frame body, on which the above-mentioned hydraulic system is provided. A cross beam is provided on the frame body, and a loading cylinder is provided on the cross beam. It also includes a lifting cylinder connected to the frame body, and the output end of the lifting cylinder is connected to the frame body.

[0018] The beneficial effects of the present utility model:

[0019] The self-climbing reaction frame adopting the above hydraulic system can realize the rising and falling of the cross beam and the extending and retracting of the loading cylinder; among them, the jacking cylinder cooperates with the hydraulic system to realize the rising and falling of the cross beam, and the position of the loading cylinder can be adjusted synchronously by rising or falling the cross beam, so that the equipment can conduct loading tests on items at different heights, thereby increasing the applicability of the equipment; and the method of driving the cross beam to rise and fall by using the jacking cylinder has a lower cost compared with the lead screw. At the same time, the jacking cylinder and the loading cylinder share the same oil source, which further reduces the cost of the equipment. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure in the present utility model;

[0021] Figure 2 It is a schematic diagram of the oil circuit flow structure when the jacking cylinder extends in the present utility model;

[0022] Figure 3 It is a schematic diagram of the oil circuit flow structure when the jacking cylinder retracts in the present utility model;

[0023] Figure 4 It is a schematic diagram of the oil circuit flow structure when the loading cylinder extends in the present utility model;

[0024] Figure 5 It is a schematic diagram of the oil circuit flow structure when the loading cylinder retracts in the present utility model;

[0025] Figure 6 It is a schematic diagram of the frame structure in the present utility model.

[0026] In the figure, 1, oil delivery component; 11, oil source; 12, filter; 13, oil pump; 14, fourth multi-head connection end; 15, third overflow valve; 2, two-position three-way valve; 3, jacking circuit; 31, first multi-head connection end; 32, first three-position four-way valve; 33, throttle valve; 34, flow divider valve; 35, first overflow valve; 4, jacking cylinder; 5, loading circuit; 51, check valve; 52, second multi-head connection end; 53, second three-position four-way valve; 54, third multi-head connection end; 55, accumulator; 56, second overflow valve; 6, loading cylinder; 7, frame; 71, cross beam. Detailed Embodiment

[0027] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment

[0029] Reference Figures 1-6 , a hydraulic system and a self-climbing reaction frame, comprising an oil delivery assembly 1 and a two-position three-way valve 2 connected to the oil delivery assembly 1, a jacking cylinder 4 connected to one position of the two-position three-way valve 2 through a jacking circuit 3, and a loading cylinder 6 connected to the other position of the two-position three-way valve 2 through a loading circuit 5;

[0030] The oil delivery assembly 1 is arranged to deliver the oil to be used into the jacking circuit 3 or the loading circuit 5; wherein, when the oil delivery assembly 1 is connected to the jacking circuit 3, the jacking circuit 3 is connected, and the oil delivered by the oil delivery assembly 1 will flow in the jacking circuit 3, and finally drive the output end of the jacking cylinder 4 to extend and retract;

[0031] When the oil delivery assembly 1 is connected to the loading circuit 5, the loading circuit 5 is connected, and the oil delivered by the oil delivery assembly 1 will flow in the loading circuit 5, and finally drive the output end of the loading cylinder 6 to extend and retract.

[0032] In this embodiment, one position of the two-position three-way valve 2 is the right position, and the other position of the two-position three-way valve 2 is the left position.

[0033] Such as Figure 2 shown, the extension work of the jacking cylinder 4 is disclosed in this figure. The loading circuit 5 includes a first multi-head connection end 31 connected to one position of the two-position three-way valve 2, a throttle valve 33 connected to the output end of the first multi-head connection end 31, and a first three-position four-way valve 32 connected to the output end of the throttle valve 33. The first three-position four-way valve 32 is connected to the jacking cylinder 4 through a flow dividing valve 34;

[0034] Both the flow dividing valve 34 and the jacking cylinder 4 are provided with two. The input end of the first three-position four-way valve 32 includes a left position, a middle position and a right position. Among them, when the oil delivery assembly 1 is connected to the middle position, the jacking cylinder 4 and the loading cylinder 6 stop rising or falling. Similarly, for the reaction frame using this hydraulic system, when the oil delivery assembly 1 is connected to the middle position, the cross beam 71 of the reaction frame is static, that is, the height adjustment work of the reaction frame is completed. At this time, the cross beam 71 can be fixed to the frame 7;

[0035] Specifically, the oil delivery assembly 1 is connected to one position of the two-position three-way valve 2, i.e., the right position. In the connected state, the oil delivery assembly 1 is in communication with the jacking circuit 3. The oil delivered by the oil delivery assembly 1 will sequentially pass through the right position of the two-position three-way valve 2, the throttle valve 33, the right position of the first three-position four-way valve 32, and into the flow divider valve 34 on the right side. The flow divider valve 34 on the right side will divide the delivered oil and inject the divided oil into the oil inlet of the jacking cylinder 4 respectively, causing the jacking cylinder 4 to extend. At the same time, the oil in the jacking cylinder 4 will flow through the oil return port of the jacking cylinder 4 into the left flow divider valve 34, and merge through the left flow divider valve 34, and finally flow through the right position of the first three-position four-way valve 32 into the oil source 11 for recycling.

[0036] As Figure 3 shown, the retraction of the jacking cylinder 4 is disclosed in this figure. In this figure, the oil input through the throttle valve 33 will pass through the left position of the first three-position four-way valve 32 and the left flow divider valve 34 on one side, and be divided at the left flow divider valve 34, and finally injected into the oil return ports of the two jacking cylinders 4. The oil in the jacking cylinder 4 will gradually flow through the oil inlet into the right flow divider valve 34 due to the injection of oil into the oil return ports, and finally flow through the right flow divider valve 34 into the oil source 11 for recycling.

[0037] Preferably, another output end of the first multi-head connection end 31 is connected with a first relief valve 35.

[0038] As Figure 4 shown, the extension of the loading cylinder 6 is disclosed in Figure 4 . The loading circuit 5 includes a check valve 51 connected to another position of the two-position three-way valve 2, a second multi-head connection end 52 connected to the check valve 51, and a loading cylinder 6 connected to the second multi-head connection end 52 through a second three-position four-way valve 53.

[0039] Specifically, the oil delivery assembly 1 is connected to another position of the two-position three-way valve 2, i.e., the right position. At this time, the loading circuit 5 is connected to the oil delivery assembly 1. The oil delivered by the oil delivery assembly will pass through the right position of the two-position three-way valve, the check valve 51, and the left position of the second three-position four-way valve 53 on one side, and finally enter the loading cylinder 6 through the oil inlet on the loading cylinder 6, causing the loading cylinder 6 to extend. The oil in the loading cylinder 6 will flow through the oil return port to the right position of the second three-position four-way valve 53 during the extension of the loading cylinder 6, and flow through the right position of the second three-position four-way valve 53 into the oil source 11.

[0040] Conversely, when the loading cylinder 6 retracts, refer to Figure 5, the oil delivery assembly 1 is connected to the left position of the second three-position four-way valve 53. The oil delivered by the oil delivery assembly 1 will successively pass through the left position of the second three-position four-way valve 53 and the oil return port of the loading cylinder 6 and enter the loading cylinder 6, causing the loading cylinder 6 to retract. The oil in the loading cylinder 6 will gradually pass through the oil inlet on the loading cylinder 6 and the left position of the second three-position four-way valve 53 as the oil is injected through the oil return port, and finally flow into the oil source 11 for recycling;

[0041] In this embodiment, the check valve 51 is provided to allow only one-way flow of hydraulic oil and prevent reverse flow. The check valve 51 plays a protective role in the hydraulic system, thus preventing the reverse flow of hydraulic oil and ensuring the normal operation of the system.

[0042] Preferably, the other output end of the second multi-head connection end 52 is connected to the third multi-head connection end 54, and the output end of the third multi-head connection end 54 is connected to a second relief valve;

[0043] Preferably, the other output end of the second multi-head connection end 52 is connected to an accumulator 55. The accumulator 55 is provided to store hydraulic oil and energy and release it when the system needs it. At the same time, the accumulator 55 can play roles such as buffering, absorbing pressure pulsation, compensating for leakage (when the loading circuit 5 maintains pressure), and providing an emergency power source in the hydraulic system;

[0044] Preferably, the oil delivery assembly 1 includes an oil source 11, a filter 12 connected to the output end of the oil source 11, and an oil pump 13 connected to the filter 12. The output end of the oil pump 13 is connected to the two-position three-way valve 2 through a fourth multi-head connection end 14. The oil source 11 can be used to store the oil that needs to be used, and at the same time, it can also recycle and reuse the used oil. The loading cylinder 6 and the lifting cylinder 4 use the same oil source 11, which reduces the manufacturing cost of the equipment to a certain extent; the filter 12 can filter the impurities in the oil, and the oil pump 13 can extract the filtered oil, thus ensuring the oil delivery work;

[0045] Further, another output end of the fourth multi-head connection end 14 is connected to a third relief valve 15;

[0046] Further, the oil source 11 includes an input end and a recovery end, and the recovery end is connected to a first relief valve 35, a second relief valve 56, a third relief valve 15, a first three-position four-way valve 32, and a second three-position four-way valve 53;

[0047] In this embodiment, the first relief valve 35, the second relief valve 56, and the third relief valve 15 are provided to control the maximum pressure of the hydraulic system and prevent the hydraulic system from overloading; the relief valve will open when the system pressure exceeds the set value and discharge the excess hydraulic oil back to the oil source 11, thereby protecting other components in the system from damage;

[0048] The settings of the first multi-head connection end 31, the second multi-head connection end 52, the third multi-head connection end 54, and the fourth multi-head connection end 14 can control the flow direction of the hydraulic oil and determine the movement direction of the hydraulic actuating element (such as the lifting cylinder 4 or the hydraulic motor); by changing the position of the spool valve, the multi-head connection end can guide the hydraulic oil to different oil circuits to achieve the working cycle of the hydraulic system.

[0049] A self-climbing reaction frame, refer to Figure 6 , comprising a frame body 7, on which the above-mentioned hydraulic system is provided. A cross beam 71 is provided on the frame body 7, and a loading cylinder 6 is provided on the cross beam 71. It further includes a lifting cylinder 4 connected to the frame body 7, and the output end of the lifting cylinder 4 is connected to the frame body; the self-climbing reaction frame adopting the above-mentioned hydraulic system can realize the ascending and descending operations of the cross beam and the extending and retracting operations of the loading cylinder 6; among them, the lifting cylinder 4 cooperating with the hydraulic system can realize the ascending and descending operations of the cross beam, and ascending or descending the cross beam can synchronously adjust the position of the loading cylinder 6, so that the equipment can perform loading tests on items at different heights, thereby increasing the applicability of the equipment; and the method of using the lifting cylinder 4 to drive the cross beam to lift and lower, compared with the lead screw, has a lower cost. At the same time, the lifting cylinder 4 and the loading cylinder 6 share the same oil source 11, which further reduces the cost of the equipment;

[0050] In this embodiment, both the loading cylinder 6 and the lifting cylinder 4 include an oil inlet and an oil return port.

[0051] Certainly, the present utility model can also have many other implementation manners. Based on this implementation manner, other implementation manners obtained by those of ordinary skill in the art without any creative labor belong to the scope protected by the present utility model.

Claims

1. A hydraulic system, characterized in that: It comprises an oil delivery component and a two-position three-way valve connected to the oil delivery component, a lifting cylinder connected to one side of the two-position three-way valve through a lifting circuit, and a loading cylinder connected to another side of the two-position three-way valve through a loading circuit.

2. A hydraulic system according to claim 1, characterized in that: The loading circuit includes a first multi-head connection end connected to the first position of the two-position three-way valve, a throttle valve connected to the output end of the first multi-head connection end, and a first three-position four-way valve connected to the output end of the throttle valve, and the first three-position four-way valve is connected to the lifting cylinder through a diverter valve.

3. A hydraulic system according to claim 2, characterized in that: Another output end of the first multi-connector end is connected to a first overflow valve.

4. A hydraulic system according to claim 1, characterized in that: The loading circuit includes a one-way valve connected to another position of the two-position three-way valve, a second multi-head connection end connected to the one-way valve, and the loading cylinder connected to the second multi-head connection end through a second three-position four-way valve.

5. A hydraulic system according to claim 4, characterized in that: Another output end of the second multi-connector end is connected to a third multi-connector end, and an output end of the third multi-connector end is connected to a second overflow valve.

6. A hydraulic system according to claim 4, characterized in that: The other output end of the second multi-terminal connection end is connected to an energy accumulator.

7. A hydraulic system according to claim 1, characterized in that: The oil delivery assembly includes an oil source, a filter connected to the output end of the oil source, and an oil pump connected to the filter. The output end of the oil pump is connected to the two-position three-way valve through a fourth multi-head connection end.

8. A hydraulic system according to claim 7, characterized in that: The other output end of the fourth multi-connector end is connected to a third overflow valve.

9. A hydraulic system according to claim 7, characterized in that: The oil source comprises an input end and a recovery end, and the recovery end is connected to a first overflow valve, a second overflow valve, a third overflow valve, a first three-position four-way valve and a second three-position four-way valve.

10. A self-climbing reaction frame, characterized in that: It includes a frame, the frame includes the hydraulic system as described in any one of claims 1-9, the frame is provided with a crossbeam, the crossbeam is provided with a loading cylinder, and also includes the jacking cylinder connected to the frame, the output end of the jacking cylinder is connected to the frame.

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