Swing mechanism and pumping device

Abstract

The utility model relates to the field of pumping equipment, and provides a swing mechanism and a pumping device.The swing mechanism comprises a left swing valve oil cylinder, a right swing valve oil cylinder, a rocker arm and two oil cylinder bases, and the rotating end of the rocker arm is rotatably installed on a hopper; the bottom end of the left swing valve oil cylinder and the bottom end of the right swing valve oil cylinder are hinged to the two oil cylinder bases respectively, a first piston rod of the left swing valve oil cylinder is movably connected with the rocker arm through a pin shaft to form a first connecting point, and a second piston rod of the right swing valve oil cylinder is movably connected with the rocker arm through a pin shaft to form a second connecting point. The swing plane of the first connecting point and the swing plane of the second connecting point are located in the same vertical plane. According to the swing mechanism, the left swing valve oil cylinder and the right swing valve oil cylinder are movably connected with the rocker arm through the pin shafts respectively, the operation stability of the swing mechanism is improved, and the left swing valve oil cylinder and the right swing valve oil cylinder are prevented from being separated from the rocker arm. And the swing planes of the connection points of the left and right swing valve oil cylinders and the rocker arm are in the same plane, so that the structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of pumping equipment, in particular to a swing mechanism and a pumping device. Background Art

[0002] Concrete pumping equipment is a kind of construction machinery that continuously transports concrete along pipelines by using pressure. It is mainly applied to aspects such as building construction, bridge construction, and tunnel construction. It is a commonly used mechanical equipment in construction machinery. Common concrete pumping equipment includes concrete pump trucks, trailer pumps, etc.

[0003] The swing mechanism of the pumping system of concrete pumping equipment mainly uses two swing valve cylinders to drive the shaft of the distribution valve (S valve) to rotate through a rocker arm, and drive the distribution valve (S valve) to change direction; thereby realizing continuous pumping of the pumping system.

[0004] In the existing swing mechanism, the rocker arm is generally connected to the ball joint at the piston rod end of the swing valve cylinder. During continuous direction change, the ball joint often disengages from the rocker arm, resulting in the distribution valve not changing direction synchronously and affecting normal pumping. Summary of the Utility Model

[0005] The utility model provides a swing mechanism and a pumping device to solve the problem that the swing valve cylinder and the rocker arm disengage in the prior art, affecting pumping; and to realize stable operation of the swing mechanism driving the distribution valve.

[0006] A swing mechanism includes:

[0007] A left swing valve cylinder, a right swing valve cylinder, a rocker arm, and two cylinder seats. The rotating end of the rocker arm is rotatably installed on the hopper; the bottom ends of the left swing valve cylinder and the right swing valve cylinder are respectively hinged to the two cylinder seats. It is characterized in that: the first piston rod of the left swing valve cylinder is movably connected to the rocker arm through a pin shaft to form a first connection point, the second piston rod of the right swing valve cylinder is movably connected to the rocker arm through a pin shaft to form a second connection point, and the swinging planes of the first connection point and the second connection point are in the same vertical plane.

[0008] According to the swing mechanism provided by the utility model, the swinging trajectories of the first connection point and the second connection point partially overlap.

[0009] According to the swing mechanism provided by the utility model, the first connection point and the second connection point are axially symmetrically distributed on the rocker arm.

[0010] According to the swing mechanism provided by the utility model, the end of the first piston rod further includes a first connection sleeve, and the pin shaft passes through the first connection sleeve and is connected to the rocker arm to form a first connection point; the end of the second piston rod further includes a second connection sleeve, and the pin shaft passes through the second connection sleeve and is connected to the rocker arm to form a second connection point.

[0011] According to the swing mechanism provided by the present utility model, the pin shaft is fixedly connected to the rocker arm through bolts.

[0012] According to the swing mechanism provided by the present utility model, a gasket is arranged between the bolt and the rocker arm.

[0013] According to the swing mechanism provided by the present utility model, an installation hole is opened at the rotating end of the rocker arm, a rotating shaft is fitted in the installation hole, and the rotating shaft is installed on the hopper.

[0014] According to the swing mechanism provided by the present utility model, the cylinder bottoms of the left swing valve oil cylinder and the right swing valve oil cylinder are respectively connected to the two oil cylinder seats through pin shafts.

[0015] A pumping device includes a hopper, a conveying cylinder and a distribution valve, and is characterized in that: the above swing mechanism is further included, and the distribution valve is connected to the rocker arm.

[0016] According to the pumping device provided by the present utility model, the two oil cylinder seats are respectively fixed on the hopper.

[0017] For the swing mechanism provided by the present utility model, the left swing valve oil cylinder and the right swing valve oil cylinder are respectively movably connected to the rocker arm through pin shafts, which can improve the operation stability of the swing mechanism, prevent the left and right swing valve oil cylinders from detaching from the rocker arm, and affect the pumping efficiency. And the swing planes of the connection points of the left and right swing valve oil cylinders and the rocker arm are in the same plane, that is, the left swing valve oil cylinder, the right swing valve oil cylinder and the rocker arm are arranged in the same plane, with a compact structure. When the left and right swing valve oil cylinders swing, the force on the left and right swing valve oil cylinders in the non-planar direction can be reduced, the stress and friction can be reduced, and the service life of the swing mechanism can be prolonged. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is the front view of the swing mechanism provided by the embodiment of the present utility model;

[0020] Figure 2 It is the top view of the swing mechanism provided by the embodiment of the present utility model;

[0021] Figure 3 It is the partial schematic diagram of the swing mechanism provided by the embodiment of the present utility model;

[0022] Figure 4It is a partial schematic view of the pumping device provided by the embodiment of the present utility model.

[0023] Reference numerals:

[0024] 10: Left swing valve oil cylinder; 11: First oil cylinder seat; 12: First cylinder bottom; 13: First piston rod; 14: First connecting sleeve; 20: Right swing valve oil cylinder; 21: Second oil cylinder seat; 22: Second cylinder bottom; 23: Second piston rod; 24: Second connecting sleeve; 31: Rocker arm; 32: Gasket; 33: Pin shaft; 34: Bolt; 41: Mounting hole; 100: Hopper; 101: Rotating shaft. Specific embodiments

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0028] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0029] An embodiment of the present utility model provides a swing mechanism, including: a swing valve oil cylinder, a rocker arm 31, and two oil cylinder seats. The swing valve oil cylinder includes a left swing valve oil cylinder 10 and a right swing valve oil cylinder 20. The left swing valve oil cylinder 10 is composed of a first cylinder bottom 12 and a first piston rod 13, and the right swing valve oil cylinder 20 is composed of a second cylinder bottom 22 and a second piston rod 23. The oil cylinder seats include a first oil cylinder seat 11 and a second oil cylinder seat 21. The rotating end of the rocker arm 31 is rotatably installed on the hopper. The cylinder bottom end of the left swing valve oil cylinder 10 is hinged to the first oil cylinder seat 11, and the cylinder bottom end of the right swing valve oil cylinder 20 is hinged to the second oil cylinder seat 21. The first piston rod 13 of the left swing valve oil cylinder 10 is movably connected to the rocker arm 31 through a pin shaft 33 to form a first connection point, and the second piston rod 23 of the right swing valve oil cylinder 20 is movably connected to the rocker arm 31 through the pin shaft 33 to form a second connection point. When the left and right swing valve oil cylinders drive the rocker arm 31 to swing, the first connection point forms a first swing plane, and the second connection point forms a second swing plane. The first swing plane of the first connection point and the second swing plane of the second connection point are in the same vertical plane. The left swing valve oil cylinder 10 and the right swing valve oil cylinder 20 are respectively movably connected to the rocker arm 31 through the pin shaft 33, which can improve the running stability of the swing mechanism, prevent the left and right swing valve oil cylinders from disengaging from the rocker arm 31, and affect the pumping efficiency. Moreover, the swing planes of the connection points between the left and right swing valve oil cylinders and the rocker arm 31 are in the same plane, that is, the left swing valve oil cylinder 10, the right swing valve oil cylinder 20, and the rocker arm 31 are arranged in the same plane, and the structure is more compact. At the same time, when the left and right swing valve oil cylinders swing, the force on the left and right swing valve oil cylinders in the non-planar direction can be reduced, the stress and friction can be reduced, and the service life of the swing mechanism can be prolonged.

[0030] The first piston rod 13 of the left swing valve oil cylinder 10 is movably connected to the rocker arm 31 through a pin shaft 33 to form a first connection point, and the second piston rod 23 of the right swing valve oil cylinder 20 is movably connected to the rocker arm 31 through the pin shaft 33 to form a second connection point; when setting the positions of the first connection point and the second connection point, they are generally set at both sides of the rocker arm 31 at the same height and spaced apart, so that during the swinging process of the rocker arm 31, part of the swinging trajectories of the first connection point and the second connection point coincide. That is, the swinging amplitudes of the first connection point and the second connection point are kept consistent, and the piston rod strokes of the left and right swing valve oil cylinders are the same, making the swinging mechanism operate more smoothly.

[0031] In order to make the forces on the rocker arm 31 consistent and the commutation more stable, the first connection point and the second connection point are arranged on both sides of the center line of the rocker arm 31, and the first connection point and the second connection point are axially symmetric with respect to the center line of the rocker arm 31.

[0032] The end of the first piston rod 13 of the left swing valve oil cylinder 10 further includes a first connection sleeve 14, and the end of the second piston rod 23 of the right swing valve oil cylinder 20 further includes a second connection sleeve 24; when the left and right swing valve oil cylinders are connected to the rocker arm 31, the first connection point is: the pin shaft 33 passes through the first connection sleeve 14, one end or both ends of the pin shaft 33 are fixedly connected to the rocker arm 31, the pin shaft 33 limits the first connection sleeve 14, and the first connection sleeve 14 is movably connected or hinged to the rocker arm 31. The second connection point is: another pin shaft 33 passes through the second connection sleeve 24, one end or both ends of the pin shaft 33 are fixedly connected to the rocker arm 31, the pin shaft 33 limits the second connection sleeve 24, and the second connection sleeve 24 is movably connected or hinged to the rocker arm 31. By connecting through the pin shaft 33 passing through the connection sleeve, on the one hand, a certain degree of freedom of the swing valve oil cylinder can be ensured, and on the other hand, the connection stability between the swing valve oil cylinder and the rocker arm 31 can be improved, preventing the swing valve oil cylinder from falling off the rocker arm 31.

[0033] The pin shaft 33 and the rocker arm 31 can be connected by welding or by a detachable method. For example: the pin shaft 33 is arranged on the rocker arm 31 or in the middle of both sides of the rocker arm 31, and is fixed by a bolt 34 passing through the rocker arm 31 and the pin shaft 33 to limit the piston rod. By connecting with the bolt 34, it is convenient for disassembly, installation and maintenance, and the fixation is more reliable. In order to prevent the bolt 34 from falling off and at the same time prevent the bolt 34 from being sheared and broken, a gasket 32 is arranged between the bolt 34 and the rocker arm 31, or a flange is arranged.

[0034] Generally, the upper end of the rocker arm 31 is connected to the left and right swing valve oil cylinders, and an installation hole 41 is opened at the rotating end. A rotating shaft 101 is fitted in the installation hole 41. The rotating shaft 101 is installed on the hopper 100 and is connected to the distribution valve in the hopper 100. By the swinging of the upper end of the rocker arm 31, the rotating shaft 101 is driven to rotate, so that the distribution valve in the hopper 100 rotates and commutes periodically.

[0035] The bottom ends of the left swing valve oil cylinder 10 and the right swing valve oil cylinder 20 can be connected to the two oil cylinder seats through spherical hinges, or can be respectively connected to the two oil cylinder seats through the pin shafts 33. When the bottom ends of the left swing valve oil cylinder 10 and the right swing valve oil cylinder 20 are connected to the two oil cylinder seats through the pin shafts 33, it can prevent the spherical hinges at the bottom ends of the left swing valve oil cylinder 10 and the right swing valve oil cylinder 20 from disengaging from the two oil cylinder seats, affecting the normal pumping operation.

[0036] A pumping device includes a hopper 100, a conveying cylinder, a distribution valve and the above-mentioned swing mechanism. The swing arm 31 of the swing mechanism is connected to the distribution valve through a rotating shaft 101. When the pumping device pumps concrete, the swing mechanism drives the distribution valve to rotate periodically to adapt to the periodic pumping commutation of the pumping device. When selecting the distribution valve, the distribution valve generally adopts an S valve. The pumping device also has the same advantages as described above and will not be elaborated here.

[0037] When installing and setting the swing mechanism, generally fix the oil cylinder seats of the swing mechanism on the hopper 100 respectively. Fixing the oil cylinder seats on the hopper 100 can reduce the stroke of the swing valve oil cylinder; or select a smaller and appropriately powered swing valve oil cylinder to save costs.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A swing mechanism, characterized in that: include: A left swing valve cylinder, a right swing valve cylinder, a rocker arm and two cylinder seats, the rotating end of the rocker arm can be rotatably installed on the hopper; the cylinder bottom ends of the left swing valve cylinder and the right swing valve cylinder are respectively hingedly connected to the two cylinder seats, and it is characterized in that: the first piston rod of the left swing valve cylinder is movably connected to the rocker arm through a pin shaft to form a first connection point, the second piston rod of the right swing valve cylinder is movably connected to the rocker arm through a pin shaft to form a second connection point, and the swing plane of the first connection point and the swing plane of the second connection point are in the same vertical plane.

2. The swing mechanism according to claim 1, characterized in that: The swing trajectory of the first connection point partially overlaps with the swing trajectory of the second connection point.

3. The swing mechanism according to claim 2, characterized in that: The first connection point and the second connection point are axially symmetrically distributed on the rocker arm.

4. The swing mechanism according to claim 3, characterized in that: The first piston rod end also includes a first connecting sleeve, and the pin passes through the first connecting sleeve and is connected to the rocker arm to form a first connecting point; The end of the second piston rod also includes a second connecting sleeve, and the pin passes through the second connecting sleeve and is connected to the rocker arm to form a second connecting point.

5. The swing mechanism according to claim 4, characterized in that: The pin is fixedly connected to the rocker arm via bolts.

6. The swing mechanism according to claim 5, characterized in that: A gasket is arranged between the bolt and the rocker arm.

7. The swing mechanism according to any one of claims 1 to 6, characterized in that: A mounting hole is provided at the rotating end of the rocker arm, a rotating shaft is fitted in the mounting hole, and the rotating shaft is mounted on the hopper.

8. The swing mechanism according to claim 1, characterized in that: The cylinder bottom ends of the left swing valve oil cylinder and the right swing valve oil cylinder are respectively connected to the two oil cylinder seats through pin shafts.

9. A pumping device, comprising a hopper, a delivery cylinder and a distribution valve, characterized in that: It also includes the rocking mechanism according to any one of claims 1 to 8, wherein the distributing valve is connected to the rocking arm.

10. The pumping device according to claim 9, characterized in that: The two oil cylinder seats are respectively fixed on the hopper.

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