Rotary jet grouting lifting stable hydraulic system in MJS process construction

Abstract

The utility model discloses a hydraulic system for lifting and stabilizing jet grouting in MJS process construction, and belongs to the technical field of construction equipment. Comprising an oil cylinder used for being connected with and driving a porous rod, cavities on the two sides of an oil cylinder piston are communicated with a first balance valve and a second balance valve through pipelines respectively, the first balance valve and the second balance valve are communicated with a port A and a port B of a reversing valve through pipelines respectively, and a port P of the reversing valve is communicated with a hydraulic pump through a pipeline. The reversing valve is a three-position four-way reversing valve, the hydraulic pump inputs hydraulic oil to the reversing valve through a pipeline, the hydraulic oil is conveyed to cavities on the two sides of the oil cylinder piston through a port A or a port B of the reversing valve to sequentially drive the oil cylinder piston to do reciprocating motion, and when work is not needed or a certain action is temporarily stopped or direction switching is carried out, the reversing valve is switched to a neutral position. And the first balance valve and the second balance valve can adjust the pressure of the rod cavity of the oil cylinder, stable and adjustable movement can be effectively provided, and therefore the situation that the construction quality is affected due to vibration of the porous rod is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction equipment, in particular to a rotary spray lifting and stabilizing hydraulic system in MJS process construction. Background Art

[0002] In the MJS process, during the jet grouting and lifting process, when the high-pressure cement slurry is sprayed at the bottom of the hole, it is required to lift and stop at a specified distance at a specified interval, and repeat this cycle. During the lifting and stopping process, the porous pipe is prone to vibrate up and down due to the hydraulic system's insufficient pressure relief, thus affecting the construction quality. Therefore, a stable hydraulic device is required to balance the pressure of the hydraulic system in time during the lifting and stopping process, thereby effectively reducing vibration. Utility Model Content

[0003] 1. Technical problems to be solved by the utility model

[0004] The utility model aims to solve the problem that the existing hydraulic system for driving the porous pipe cannot avoid vibration during the lifting and stopping process of the porous pipe.

[0005] 2. Technical solution

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0007] The utility model discloses a hydraulic system for stabilizing rotary grouting during MJS process construction, comprising an oil cylinder for connecting and driving a porous rod, wherein cavities on both sides of the oil cylinder piston are respectively connected to a balancing valve 1 and a balancing valve 2 through pipelines, wherein the balancing valve 1 and the balancing valve 2 are respectively connected to an A port and a B port of a reversing valve through pipelines, and a P port of the reversing valve is connected to a hydraulic pump through a pipeline.

[0008] Preferably, a branch pipeline is provided on the connecting pipeline between the P port of the reversing valve and the hydraulic pump and is connected to a relief valve.

[0009] Preferably, a normally closed two-position valve, a speed regulating valve 2 and a speed regulating valve 1 are sequentially arranged on the connecting pipeline between the balancing valve 1 and the A port of the reversing valve.

[0010] Preferably, a normally open two-position valve is provided on the connecting pipeline between the second balancing valve and the B port of the reversing valve.

[0011] 3. Beneficial effects

[0012] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0013] The utility model discloses a hydraulic system for stabilizing the rotary grouting during the MJS process construction, comprising an oil cylinder for connecting and driving a porous rod, wherein the cavities on both sides of the oil cylinder piston are respectively connected to a balance valve 1 and a balance valve 2 through pipelines, wherein the balance valve 1 and the balance valve 2 are respectively connected to the A port and the B port of the reversing valve through pipelines, and the P port of the reversing valve is connected to the hydraulic pump through a pipeline. The reversing valve is a three-position four-way reversing valve, wherein the hydraulic pump inputs hydraulic oil to the reversing valve through a pipeline, and delivers the hydraulic oil to the cavities on both sides of the oil cylinder piston through the A port or the B port of the reversing valve, thereby driving the oil cylinder piston to reciprocate in turn, and when no work is required or a certain action is temporarily stopped or the direction is switched, the reversing valve is switched to the middle position, and the balance valve 1 and the balance valve 2 can adjust the pressure of the rod chamber and the rod chamber of the oil cylinder, thereby effectively providing a smooth and adjustable movement, thereby preventing the porous rod from vibrating and affecting the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a rotary grouting lifting and stabilizing hydraulic system in MJS process construction of the utility model.

[0015] Explanation of the symbols in the schematic diagram:

[0016] 110. Hydraulic pump; 120. Overflow valve; 130. Reversing valve; 141. Speed ​​regulating valve 1; 142. Speed ​​regulating valve 2; 150. Normally open two-position valve; 160. Normally closed two-position valve; 171. Balance valve 1; 172. Balance valve 2; 180. Oil cylinder. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0020] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0021] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Example 1

[0024] See attached Figure 1 In the present embodiment, a hydraulic system for stabilizing the grouting lifting in the MJS process construction includes an oil cylinder 180 for connecting and driving a porous rod. The cavities on both sides of the piston of the oil cylinder 180 are connected to a balancing valve 171 and a balancing valve 2 172 through pipelines. The balancing valve 171 and the balancing valve 2 172 are connected to the A port and the B port of the reversing valve 130 through pipelines, respectively. The P port of the reversing valve 130 is connected to the hydraulic pump 110 through a pipeline. The reversing valve 130 is a three-position four-way reversing valve. The hydraulic pump 110 inputs hydraulic oil to the reversing valve 130 through a pipeline, and delivers it to the cavities on both sides of the piston of the cylinder 180 through the A port or the B port of the reversing valve 130, thereby driving the piston of the cylinder 180 to reciprocate in turn. When work is not required or a certain action is temporarily stopped or the direction is switched, the reversing valve 130 switches to the middle position, and the balancing valve 171 and the balancing valve 2 172 can adjust the pressure of the rod chamber and the rod chamber of the cylinder, which can effectively provide smooth and adjustable movement, thereby preventing the porous rod from vibrating and affecting the construction quality.

[0025] A branch pipeline is provided on the communication pipeline between the P port of the reversing valve 130 and the hydraulic pump 110 and is connected to the overflow valve 120. The overflow valve 120 is a safety valve of the hydraulic system and can effectively prevent the system from being damaged due to excessive pressure in the hydraulic system.

[0026] A normally closed two-position valve 160, a speed regulating valve 142 and a speed regulating valve 141 are arranged in sequence on the connecting pipeline between the balancing valve 1 171 and the port A of the reversing valve 130. A normally open two-position valve 150 is arranged on the connecting pipeline between the balancing valve 1 172 and the port B of the reversing valve 130. When the lifting stops, after the normally closed two-position valve 160 and the normally open two-position valve 150 are switched to the closed position, a pipeline is further arranged between the balancing valve 1 171 and the balancing valve 2 172 for communication, and the balancing valve 1 171 and the balancing valve 2 172 are pressure balanced through the connected pipeline, thereby stabilizing the hydraulic system.

[0027] The above-described embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A hydraulic system for stabilizing the jet grouting during MJS process construction, characterized by: The invention comprises an oil cylinder (180) for connecting and driving a porous rod, wherein the cavities on both sides of the piston of the oil cylinder (180) are respectively connected to a first balancing valve (171) and a second balancing valve (172) through pipelines, wherein the first balancing valve (171) and the second balancing valve (172) are respectively connected to an A port and a B port of a reversing valve (130) through pipelines, and the P port of the reversing valve (130) is connected to a hydraulic pump (110) through a pipeline.

2. According to claim 1, a hydraulic system for stabilizing the rotary grouting during MJS process construction, characterized in that: A branch pipeline is provided on the pipeline connecting the P port of the reversing valve (130) and the hydraulic pump (110), and is connected to the overflow valve (120).

3. According to claim 2, a hydraulic system for stabilizing the rotary grouting during MJS process construction is characterized by: A normally closed two-position valve (160), a speed regulating valve 2 (142) and a speed regulating valve 1 (141) are sequentially arranged on the connecting pipeline between the balancing valve 1 (171) and the port A of the reversing valve (130).

4. According to claim 2, a hydraulic system for stabilizing the rotary grouting during MJS process construction is characterized by: A normally open two-position valve (150) is provided on the connecting pipeline between the second balancing valve (172) and the B port of the reversing valve (130).

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