Valve body, supporting leg and engineering vehicle

Abstract

The utility model relates to the technical field of engineering machinery, and provides a valve body, a supporting leg and an engineering vehicle. The valve body comprises a water inlet piece, a water outlet piece, a valve element and a valve element, the switch piece is arranged in the water inlet channel; the floating piece is connected with the switch piece and located in the box body, and the floating piece can drive the switch piece to move under the action of buoyancy; wherein the switch piece comprises a first position and a second position; when the switch piece is located at the first position, the switch piece closes the water inlet channel; when the switch piece is located at the second position, the water inlet channel is opened. The valve body is arranged in the tank body, the water adding process of the tank body is controlled by buoyancy, and when the switch piece moves to the first position, the water inlet channel is closed, so that the water adding amount of the tank body is limited, the situation that the tank body swells due to the fact that high pressure is generated in the tank body due to excessive water adding is avoided, and the risk that the water tank is damaged is reduced; and a full-time worker does not need to continuously observe the water adding amount of the box body, so that the labor cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of engineering machinery, and in particular to a valve body, a support leg and an engineering vehicle. Background Art

[0002] In the related art, when the water tank of the outrigger of the concrete pump truck is being filled with water, the operator needs to continuously observe the water level in the water tank to determine whether the water tank is full of water. During the water filling process, the operator needs to wait full-time, which wastes manpower costs.

[0003] Therefore, how to overcome the above-mentioned technical defects has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, the first aspect of the present application proposes a valve body.

[0006] A second aspect of the present application provides a supporting leg.

[0007] A third aspect of the present application provides an engineering vehicle.

[0008] In view of this, the present application proposes a valve body, which is used to be set in a box body, and the box body includes a mounting port. The valve body includes: a water inlet member, which is set in the mounting port, the water inlet member is located at the bottom of the box body, and the water inlet member includes a water inlet channel; a switch member, which is set in the water inlet channel; a floating member, which is connected to the switch member and is located in the box body, and the floating member can drive the switch member to move in the water inlet channel under the action of buoyancy; wherein the switch member includes a first position and a second position; when the switch member is in the first position, the switch member closes the water inlet channel; when the switch member is in the second position, the water inlet channel is opened.

[0009] The valve body provided in the present application is arranged in a box body, and the box body can be an outrigger water tank of a concrete pump truck. In the related art, during the water filling process of the outrigger water tank of a concrete pump truck, the operator needs to continuously observe the height of the water level in the box body to determine whether the box body is full of water. Therefore, during the water filling process, the staff needs to wait full-time, which is extremely inefficient. During the water filling process, if the operator uses a large-flow water pump to add water to the box body, when the box body is filled with water and overflows, it is easy to generate high pressure in the box body and cause bulging damage to the box body.

[0010] The valve body provided in the present application includes a water inlet member, a switch member and a floating member. Specifically, the valve body is used to be arranged in a box body, the box body includes a mounting port, the mounting port is located at the bottom of the box body, and the water inlet member is arranged at the mounting port. The water inlet member includes a water inlet channel, the water inlet channel is connected to a water source, and when water is added to the box body, water enters the box body through the water inlet channel. A switch member is arranged in the water inlet channel, and the switch member can open and close the water inlet channel. The switch member includes a first position and a second position, and the height of the first position is higher than the second position. When the switch member is in the first position, the switch member closes the water inlet channel, and the process of adding water to the box body stops. When the switch member is in the second position, the switch member opens the water inlet channel and maintains the water adding state. A floating member is also arranged in the box body, and the floating member is connected to the switch member. The floating member can drive the switch member to move in the water inlet channel under the action of buoyancy. The position of the switch element is controlled by the water level in the box. When the switch element is in the second position, the water level in the box is low. At this time, the water inlet channel is in a fully open state. As the water level in the box increases, under the action of buoyancy, the floating element will drive the switch element to move from the second position to the first position. When the switch element moves to the first position, the water inlet channel is closed.

[0011] The present application connects the floating part with the switch part, and uses the buoyancy of the floating part to drive the switch part to move, thereby controlling the water adding state. When the water level of the box reaches the designed water level, the switch part is located at the first position, the water inlet channel is closed, and the water adding process stops, thereby limiting the amount of water in the box. When the water in the box becomes less, the buoyancy becomes smaller, and under the effect of its own gravity, the switch part leaves the first position, the water inlet channel is opened, and water continues to be added to the box.

[0012] The valve body provided by the present application is arranged on the box body, and the water filling process of the box body is controlled by buoyancy. When the switch element moves to the first position, the water inlet channel is closed, thereby limiting the amount of water added to the box body, avoiding the box body bulging caused by high pressure generated in the box body due to overfilling, reducing the risk of damage to the box body, and ensuring the safety of the box body. Moreover, when the designed water level is reached, the switch element can close the water inlet channel, and there is no need for full-time personnel to continuously observe the height of the water level in the box body to determine whether the box body is full of water, saving labor costs.

[0013] In addition, the valve body in the above technical solution provided by the present application may also have the following additional technical features:

[0014] In some technical solutions, optionally, the floating member includes: a connecting rod, one end of which is connected to the switch member; and a floating part, which is connected to the other end of the connecting rod.

[0015] In this technical solution, the floating member includes a connecting rod and a floating part, and the two ends of the connecting rod are connected to the switch member and the floating part respectively. When water is added to the box, as the water level in the box rises, the floating part will float upward under the action of buoyancy, thereby driving the connecting rod and the switch member connected to the connecting rod to move upward. When the switch member moves to the first position, the water inlet channel will be closed, so that the water adding process stops.

[0016] In some technical solutions, optionally, the water inlet component includes: a water inlet connector, one end of which is connected to a water source; and a water inlet pipe, which is connected to the other end of the water inlet connector, and the water inlet pipe encloses a water inlet channel.

[0017] In this technical solution, the water inlet component includes a water inlet joint and a water inlet pipe. Specifically, one end of the water inlet joint is connected to a water source, and the other end of the water inlet joint is connected to the water inlet pipe. The water inlet pipe encloses a water inlet channel. When water is added to the box, the external water source enters the water inlet channel through the water inlet joint and then enters the box.

[0018] In some technical solutions, optionally, the water inlet channel includes: a first channel, where the switch element is arranged; and a second channel, which is connected to the first channel; wherein the inner diameter of the first channel is larger than the outer diameter of the switch element, and the outer diameter of the switch element is larger than the inner diameter of the second channel.

[0019] In this technical solution, the water inlet channel includes a first channel and a second channel, and the first channel is connected to the second channel. The first channel and the second channel are cylindrical channels, and the switch member can be a circular valve plate. The inner diameter of the first channel is larger than the outer diameter of the switch member. When the switch member moves upward and downward in the first channel, it will not be stuck by the inner wall of the first channel. The outer diameter of the switch member is larger than the inner diameter of the second channel. When the switch member moves to the first position, it can block the second channel to stop water addition.

[0020] Specifically, the switch component is arranged in the first channel. When the switch component is located at the bottom of the first channel, the switch component is in the second position. When the switch component is at the top of the first channel, the switch component is in the first position. The switch component is connected to the floating component. As the water level rises, the buoyancy increases. Under the action of the buoyancy, the floating component can drive the switch component to move from the second position to the first position. As the water level drops, the buoyancy becomes smaller. The switch component can also return to the second position from the first position under the action of its own gravity.

[0021] In the present application, the water inlet state includes a fully open state, a closed state, and a throttle state depending on the position of the switch. In the height direction of the box, when the switch is in the second position, the water inlet state is a fully open state, when the switch is in the first position and abuts against the second channel, the water inlet state is a closed state, and when the switch is near the first position, the water inlet state is a throttle state.

[0022] In some technical solutions, optionally, the valve body further includes: a water inlet, which is arranged on the peripheral side of the water inlet pipe and connects the second channel and the box body.

[0023] In this technical solution, the valve body also includes a water inlet, which is used to let water into the box. Specifically, the water inlet is arranged on the peripheral side of the water inlet pipe, and the water inlet is connected to the second channel and the box. When water is added to the box, the water enters the box through the water inlet joint, the first channel, the second channel and the water inlet in sequence, so that the water addition can be stopped by blocking the second channel with the switch.

[0024] In some technical solutions, optionally, the valve body further includes: a limiting hole, which is arranged at the top of the water inlet pipe, and the floating member passes through the limiting hole, and the limiting hole is used to limit the movement of the floating member.

[0025] In this technical solution, the valve body also includes a limit hole, which is used to limit the moving direction of the floating member. Specifically, the limit hole is set at the top of the water inlet pipe, and the connecting rod included in the floating member is inserted into the limit hole. Under the action of buoyancy, the floating member can move along the axial direction of the limit hole. As the water level in the box rises, the buoyancy increases. Under the action of buoyancy, the floating member can rise along the axial direction of the limit hole, driving the switch member to move upward. When the switch member moves to the first position, it can block the second channel to stop the water addition.

[0026] The second aspect of the present application proposes a support leg, which constitutes a box body. The support leg includes: a valve body as in any of the above technical solutions, and the valve body is arranged in the box body.

[0027] The support leg provided in the present application includes a valve body as in any of the above-mentioned technical solutions, and thus has all the beneficial effects of the valve body, which will not be described in detail here.

[0028] The outrigger provided in the present application can be used for engineering vehicles. The outrigger can improve the stability of the engineering vehicle during operation, especially during pumping operation, and prevent the engineering vehicle from tilting during operation. The outrigger can also disperse the weight, reduce the pressure on the ground, and effectively protect the ground. A part of the outrigger constitutes a box, and the water in the box can be used to wash the engineering vehicle to keep the engineering vehicle clean.

[0029] In some technical solutions, optionally, the supporting leg also includes: a liquid level meter, which is arranged in the box body, and the liquid level meter is used to detect the water level in the box body.

[0030] In this technical solution, a liquid level meter is arranged on the side wall of the box, and the liquid level meter includes a sensor and a display instrument, which can measure the height of the water in the box. The pointer on the liquid level meter can indicate the liquid level. The user can directly observe the liquid level through the liquid level meter.

[0031] In some technical solutions, optionally, the supporting leg further includes: a drain outlet, which is arranged on the box body; a drain component, which is arranged on the drain outlet, and the drain component is used to open and close the drain outlet.

[0032] In this technical solution, the legs also include a drain port and a drain component. Specifically, a drain port is provided at the bottom of the box, and the drain component is provided on the drain port, and the drain component is used to quickly drain water. The box will deposit some dirt at the bottom of the box after long-term use, so the box needs to be cleaned regularly. When cleaning the box, the drain component can be used to quickly drain water. When the box is in normal use, the drain component can block the drain port to prevent water in the box from flowing out. When drainage is required, the drain component is opened, and the water in the box is quickly discharged through the drain port.

[0033] The third aspect of the present application proposes an engineering vehicle, comprising: a support leg as in the above technical solution.

[0034] The engineering vehicle provided in the present application includes the support legs as described in the above technical solution, and thus has all the beneficial effects of the support legs, which will not be described in detail here.

[0035] Optionally, the engineering vehicle provided in the present application may be a concrete pump truck, and the tank body may be an outrigger water tank.

[0036] Beneficial technical effects of this application:

[0037] 1. The water inlet, switch and floating parts are combined to form the valve body. During the water filling process, the operator can leave the site to do other work. When the water level in the box reaches the designed water level, the valve body will automatically close the water inlet channel to prevent a large amount of water from overflowing.

[0038] 2. To solve the problem of unsafe water adding, at the end of the water adding process, the water adding valve will automatically limit the water adding flow rate, thereby limiting the pressure generated in the outrigger water tank due to overflow.

[0039] Additional aspects and advantages of the present application will become apparent in the following description or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0041] Figure 1 A schematic structural diagram of a valve body according to an embodiment of the present application is shown;

[0042] Figure 2 A schematic diagram showing the structure of a box body according to an embodiment of the present application is shown;

[0043] Figure 3 Shows Figure 2An enlarged view of part A of the box in the illustrated embodiment;

[0044] Figure 4 A schematic structural diagram showing a closed state of a switch member of a valve body according to an embodiment of the present application;

[0045] Figure 5 A schematic structural diagram of an engineering vehicle according to an embodiment of the present application is shown.

[0046] in, Figures 1 to 5 The corresponding relationship between the reference numerals and component names in the figure is:

[0047] 100 valve body, 110 housing, 112 mounting port, 120 water inlet part, 122 water inlet channel, 123 first channel, 124 second channel, 126 water inlet joint, 128 water inlet pipe, 130 switch part, 140 floating part, 142 connecting rod, 143 floating part, 150 water inlet, 160 limiting hole, 170 liquid level gauge, 180 drain outlet, 190 drain part, 200 engineering vehicle, 210 support leg. DETAILED DESCRIPTION

[0048] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0050] Refer to the following Figures 1 to 5 , the valve body 100, the support leg 210 and the engineering vehicle 200 provided in the embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0051] In a first aspect of the present application, a valve body 100 is provided. The valve body 100 is used to be arranged in a box body 110. The box body 110 includes an installation opening 112. Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the valve body 100 includes: a water inlet member 120, which is arranged at the installation port 112, the water inlet member 120 is located at the bottom of the box body 110, and the water inlet member 120 includes a water inlet channel 122; a switch member 130, which is arranged in the water inlet channel 122; a floating member 140, which is connected to the switch member 130 and is located in the box body 110, and the floating member 140 can drive the switch member 130 to move in the water inlet channel 122 under the action of buoyancy; wherein, the switch member 130 includes a first position and a second position; when the switch member 130 is in the first position, the switch member 130 closes the water inlet channel 122; when the switch member 130 is in the second position, the water inlet channel 122 is opened.

[0052] The valve body 100 provided in the present application is arranged in a box body 110, and the box body 110 can be a water tank for the outrigger of a concrete pump truck. In the related art, during the water filling process of the outrigger water tank of a concrete pump truck, the operator needs to continuously observe the height of the water level in the box body to determine whether the box body is full of water. Therefore, during the water filling process, the staff needs to wait full-time, which is extremely inefficient. During the water filling process, if the operator uses a large-flow water pump to add water to the box body, when the box body is filled with water and overflows, it is easy to generate high pressure in the box body and cause bulging damage to the box body.

[0053] The valve body 100 provided in the present application includes a water inlet member 120, a switch member 130 and a floating member 140. Specifically, the valve body 100 is used to be arranged in a box body 110, and the box body 110 includes a mounting port 112, and the mounting port 112 is located at the bottom of the box body 110, and the water inlet member 120 is arranged at the mounting port 112. The water inlet member 120 includes a water inlet channel 122, and the water inlet channel 122 is connected to a water source. When water is added to the box body 110, water enters the box body 110 through the water inlet channel 122. A switch member 130 is arranged in the water inlet channel 122, and the switch member 130 can open and close the water inlet channel 122. The switch member 130 includes a first position and a second position, and the height of the first position is higher than the second position. When the switch member 130 is located in the first position, the switch member 130 closes the water inlet channel 122, and the process of adding water to the box body 110 stops. When the switch member 130 is located at the second position, the switch member 130 opens the water inlet channel 122 to maintain the water supply state. A floating member 140 is also provided in the housing 110, and the floating member 140 is connected to the switch member 130. The floating member 140 can drive the switch member 130 to move in the water inlet channel 122 under the action of buoyancy. The position of the switch member 130 is controlled by the water level in the housing 110. When the switch member 130 is located at the second position, the water level in the housing 110 is low. At this time, the water inlet channel 122 is in a fully open state. As the water level in the housing 110 increases, under the action of buoyancy, the floating member 140 drives the switch member 130 to move from the second position to the first position. When the switch member 130 moves to the first position, the water inlet channel 122 is closed.

[0054] The present application connects the floating member 140 with the switch member 130, and utilizes the buoyancy of the floating member 140 to drive the switch member 130 to move, thereby controlling the water adding state. When the water level of the box 110 reaches the designed water level, the switch member 130 is located at the first position, the water inlet channel 122 is closed, and the water adding process stops, thereby limiting the amount of water in the box 110. When the water in the box 110 decreases, the buoyancy decreases, and under the effect of its own gravity, the switch member 130 leaves the first position, the water inlet channel 122 opens, and water continues to be added to the box 110. Figure 2 As shown, the position pointed by arrow B is the design water level.

[0055] The valve body 100 provided in the present application is arranged on the box 110, and the water filling process of the box 110 is controlled by buoyancy. When the switch 130 moves to the first position, the water inlet channel 122 is closed, thereby limiting the amount of water added to the box 110, avoiding the box 110 bulging due to high pressure generated in the box 110 due to overfilling, reducing the risk of damage to the box 110, and ensuring the safety of the box 110. Moreover, when the designed water level is reached, the switch 130 can close the water inlet channel 122, and there is no need for a full-time staff to continuously observe the height of the water level in the box 110 to determine whether the box 110 is full of water, saving labor costs.

[0056] In some embodiments, optionally, Figure 1 and Figure 2 As shown, the floating member 140 includes: a connecting rod 142 , one end of which is connected to the switch member 130 ; and a floating portion 143 , which is connected to the other end of the connecting rod 142 .

[0057] In this embodiment, the floating member 140 includes a connecting rod 142 and a floating portion 143, and the two ends of the connecting rod 142 are respectively connected to the switch member 130 and the floating portion 143. When water is added to the box 110, as the water level in the box 110 rises, the floating portion 143 will float upward under the action of buoyancy, thereby driving the connecting rod 142 and the switch member 130 connected to the connecting rod 142 to move upward. When the switch member 130 moves to the first position, the water inlet channel 122 will be closed, so that the water addition process stops.

[0058] In some embodiments, optionally, Figure 1 , Figure 2 and Figure 3 As shown, the water inlet component 120 includes: a water inlet connector 126 , one end of which is connected to a water source; a water inlet pipe 128 , which is connected to the other end of the water inlet connector 126 , and the water inlet pipe 128 encloses a water inlet channel 122 .

[0059] In this embodiment, the water inlet member 120 includes a water inlet joint 126 and a water inlet pipe 128. Specifically, one end of the water inlet joint 126 is connected to a water source, and the other end of the water inlet joint 126 is connected to the water inlet pipe 128. The water inlet pipe 128 encloses a water inlet channel 122. When water is added to the box body 110, the external water source enters the water inlet channel 122 through the water inlet joint 126 and then enters the box body 110.

[0060] In some embodiments, optionally, Figure 1 , Figure 2 and Figure 3 As shown, the water inlet channel 122 includes: a first channel 123, and a switch member 130 is arranged in the first channel 123; a second channel 124, which is connected to the first channel 123; wherein the inner diameter of the first channel 123 is greater than the outer diameter of the switch member 130, and the outer diameter of the switch member 130 is greater than the inner diameter of the second channel 124.

[0061] In this embodiment, the water inlet channel 122 includes a first channel 123 and a second channel 124, and the first channel 123 is connected to the second channel 124. The first channel 123 and the second channel 124 are cylindrical channels, and the switch member 130 can be a circular valve plate. The inner diameter of the first channel 123 is larger than the outer diameter of the switch member 130. When the switch member 130 moves upward and downward in the first channel 123, it will not be stuck by the inner wall of the first channel 123. The outer diameter of the switch member 130 is larger than the inner diameter of the second channel 124. When the switch member 130 moves to the first position, it can block the second channel 124 to stop the water addition.

[0062] Specifically, the switch component 130 is arranged in the first channel 123. When the switch component 130 is located at the bottom of the first channel 123, the switch component 130 is in the second position. When the switch component 130 is at the top of the first channel 123, the switch component 130 is in the first position. The switch component 130 is connected to the floating component 140. As the water level rises, the buoyancy increases. Under the action of the buoyancy, the floating component 140 can drive the switch component 130 to move from the second position to the first position. As the water level drops, the buoyancy becomes smaller. The switch component 130 can also return to the second position from the first position under the action of its own gravity.

[0063] In the present application, the water inlet state includes a fully open state, a closed state, and a throttle state depending on the position of the switch 130. In the height direction of the box body 110, when the switch 130 is in the second position, the water inlet state is a fully open state, when the switch 130 is in the first position and abuts against the second channel 124, the water inlet state is a closed state, and when the switch 130 is near the first position, the water inlet state is a throttle state.

[0064] In some embodiments, optionally, Figure 1 and Figure 2As shown, the valve body 100 further includes: a water inlet 150 , which is arranged on the peripheral side of the water inlet pipe 128 and communicates with the second channel 124 and the box body 110 .

[0065] In this embodiment, the valve body 100 further includes a water inlet 150, which is used to feed water into the box body 110. Specifically, the water inlet 150 is disposed on the peripheral side of the water inlet pipe 128, and the water inlet 150 is connected to the second channel 124 and the box body 110. When water is added to the box body 110, the water enters the box body 110 through the water inlet joint 126, the first channel 123, the second channel 124 and the water inlet 150 in sequence, so that the water addition can be stopped by blocking the second channel 124 with the switch member 130.

[0066] In some embodiments, optionally, Figure 1 and Figure 2 As shown, the valve body 100 further includes: a limiting hole 160, which is arranged at the top of the water inlet pipe 128, and the floating member 140 is passed through the limiting hole 160, and the limiting hole 160 is used to limit the movement of the floating member 140.

[0067] In this embodiment, the valve body 100 further includes a limiting hole 160, which is used to limit the moving direction of the floating member 140. Specifically, the limiting hole 160 is provided at the top of the water inlet pipe 128, and the connecting rod 142 included in the floating member 140 is penetrated through the limiting hole 160. Under the action of buoyancy, the floating member 140 can move along the axial direction of the limiting hole 160. As the water level in the box 110 rises, the buoyancy increases. Under the action of buoyancy, the floating member 140 can rise along the axial direction of the limiting hole 160, driving the switch member 130 to move upward. When the switch member 130 moves to the first position, it can block the second channel 124 to stop the water addition.

[0068] like Figure 5 As shown, the second aspect of the present application proposes a support leg 210 , which constitutes a box body 110 . The support leg 210 includes: a valve body 100 as in any of the above embodiments, and the valve body 100 is arranged in the box body 110 .

[0069] The support leg 210 provided in the present application includes a valve body 100 as in any of the above-mentioned embodiments, and thus has all the beneficial effects of the valve body 100, which will not be described in detail herein.

[0070] The support leg 210 provided in the present application can be used for the engineering vehicle 200. The support leg 210 can improve the stability of the engineering vehicle 200 during operation, especially during pumping operation, and prevent the engineering vehicle 200 from tilting during operation. The support leg 210 can also disperse the weight, reduce the pressure on the ground, and effectively protect the ground. A part of the support leg 210 constitutes the box 110, and the water in the box 110 can be used to wash the engineering vehicle 200 to keep the engineering vehicle 200 clean.

[0071] In some embodiments, optionally, Figure 2 As shown, the support leg 210 also includes: a liquid level meter 170, which is arranged on the box body 110, and the liquid level meter 170 is used to detect the water level in the box body 110.

[0072] In this embodiment, the liquid level meter 170 is disposed on the side wall of the box 110. The liquid level meter 170 includes a sensor and a display instrument, and can measure the height of the water in the box 110. The pointer on the liquid level meter 170 can indicate the liquid level. The user can directly observe the liquid level through the liquid level meter 170.

[0073] In some embodiments, optionally, Figure 2 As shown, the support leg 210 also includes: a drain port 180 disposed on the box body 110 ; a drain component 190 disposed on the drain port 180 , and the drain component 190 is used to open and close the drain port 180 .

[0074] In this embodiment, the leg 210 further includes a drain port 180 and a drain component 190. Specifically, a drain port 180 is provided at the bottom of the box body 110, and the drain component 190 is provided on the drain port 180, and the drain component 190 is used for rapid drainage. The box body 110 will deposit some dirt at the bottom of the box body 110 after long-term use, so the box body 110 needs to be cleaned regularly. When cleaning the box body 110, the drain component 190 can be used to quickly drain water. When the box body 110 is in normal use, the drain component 190 can block the drain port 180 to prevent the water in the box body 110 from flowing out. When drainage is required, the drain component 190 is opened, and the water in the box body 110 is quickly discharged through the drain port 180.

[0075] like Figure 5 As shown, the third aspect of the present application proposes an engineering vehicle 200, comprising: a support leg 210 as in any of the above embodiments.

[0076] The engineering vehicle 200 provided in the present application includes the support leg 210 as in any one of the above embodiments, and thus has all the beneficial effects of the support leg 210 , which will not be described in detail herein.

[0077] Optionally, the engineering vehicle 200 provided in the present application may be a concrete pump truck, and the tank body 110 may be an outrigger water tank.

[0078] In actual applications, the floating part 143 may be a buoy, the water inlet member 120 may be a sleeve, the switch member 130 may be a circular valve plate, and the buoy, the connecting rod 142, the sleeve and the valve plate are combined to form a water adding valve (valve body 100). After the implementation of this solution, from the "zero water level" to the "first water level" of the box body 110, the water adding valve maintains a fully open state to inject water into the box body 110. When the box body 110 reaches the "first water level", under the action of the "buoy", the "valve plate" will be lifted by the "buoy", blocking the upper water inlet channel 122 to produce a throttling effect.

[0079] In this application, the term "plurality" means two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0080] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0081] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A valve body, characterized in that: The valve body is used to be arranged in a box body, the box body includes a mounting port, and the valve body includes: A water inlet component is arranged at the installation port, the water inlet component is located at the bottom of the box body, and the water inlet component includes a water inlet channel; A switch member, disposed in the water inlet channel; A floating member connected to the switch member and located in the box, wherein the floating member can drive the switch member to move in the water inlet channel under the action of buoyancy; Wherein, the switch element comprises a first position and a second position; When the switch element is located at the first position, the switch element closes the water inlet channel; When the switch element is located at the second position, the water inlet channel is opened.

2. The valve body according to claim 1, characterized in that: The floating member comprises: A connecting rod, one end of which is connected to the switch element; The floating part is connected to the other end of the connecting rod.

3. The valve body according to claim 1, characterized in that: The water inlet member comprises: A water inlet connector, one end of which is connected to a water source; A water inlet pipe is connected to the other end of the water inlet joint, and the water inlet pipe encloses the water inlet channel.

4. The valve body according to claim 3, characterized in that: The water inlet channel comprises: a first channel, wherein the switch element is disposed in the first channel; a second channel, connected to the first channel; The inner diameter of the first channel is larger than the outer diameter of the switch element, and the outer diameter of the switch element is larger than the inner diameter of the second channel.

5. The valve body according to claim 4, characterized in that: Also includes: A water inlet is arranged on the peripheral side of the water inlet pipe and communicates with the second channel and the box body.

6. The valve body according to claim 3, characterized in that: Also includes: A limiting hole is arranged at the top of the water inlet pipe, the floating member is passed through the limiting hole, and the limiting hole is used to limit the movement of the floating member.

7. A leg, characterized in that: The legs constitute a box body, and the legs include: a valve body according to any one of claims 1 to 6, and the valve body is arranged in the box body.

8. The support leg according to claim 7, characterized in that: Also includes: A liquid level meter is arranged in the box body, and the liquid level meter is used to detect the water level in the box body.

9. The support leg according to claim 7, characterized in that: Also includes: A drain outlet is provided on the box body; A drainage component is arranged at the drainage outlet, and the drainage component is used to open and close the drainage outlet.

10. An engineering vehicle, characterized in that: include: A leg as claimed in any one of claims 7 to 9.

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