Automatic rotation system and forcible entry device

Abstract

The application discloses an automatic rotating system, which comprises a hydraulic cylinder for driving a crushing clamp to open and close and a hydraulic motor for driving the equipment to rotate, a rod cavity of the hydraulic cylinder is connected with one oil port of the hydraulic motor through a sequence valve, the sequence valve is turned on when the pressure in the rod cavity reaches a preset value, so that the hydraulic oil in the rod cavity enters and drives the hydraulic motor, a rodless cavity of the hydraulic cylinder is connected with another oil port of the hydraulic motor through a one-way valve, and the one-way valve is used for limiting the hydraulic oil in the rodless cavity from entering the hydraulic motor. The automatic rotating is realized through the sequence valve, the oil circuit is only connected with the hydraulic cylinder, a rotating oil circuit does not need to be arranged, and then the structure is simplified, the cost is reduced, the oil circuit connection is reduced, the accident frequency is reduced, the reliability is improved, the operation is simpler, and the system stability is improved. The application further discloses a breaking equipment comprising the automatic rotating system.

Description

Technical Field

[0001] This invention relates to the field of demolition, and in particular to an automatic rotary system. Furthermore, this invention also relates to a demolition device comprising the aforementioned automatic rotary system. Background Technology

[0002] With the increasing maturity of infrastructure and housing construction, hydraulic breakers, as perfect initial demolition equipment, have a huge market prospect and a good development trend. However, when assembling and connecting them with existing ordinary excavators in China, it is generally necessary to install two hydraulic circuits for opening and closing and rotation. The more hydraulic circuits there are, the more hydraulic oil accidents are likely to occur.

[0003] In existing technology, hydraulic hoses are used to connect the excavator and the hydraulic rotary breaker carrier, thereby achieving the opening and closing and rotation functions of the dual hydraulic circuits. Its main disadvantages include inconvenient installation and operation, high cost, and instability.

[0004] Therefore, how to provide an automatic rotary system that overcomes the above problems is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic rotation system that achieves automatic rotation through a sequence valve, simplifying the structure, reducing oil circuit connections, and improving system stability. Another purpose of this invention is to provide a demolition device that includes the aforementioned automatic rotation system.

[0006] To solve the above-mentioned technical problems, the present invention provides an automatic rotation system, including a hydraulic cylinder for driving the opening and closing of a crusher and a hydraulic motor for driving the rotation of the equipment. The rod chamber of the hydraulic cylinder is connected to one port of the hydraulic motor through a sequence valve. When the pressure in the rod chamber of the hydraulic cylinder reaches a preset value, the sequence valve is opened, allowing the hydraulic oil in the rod chamber to enter and drive the hydraulic motor. The rodless chamber of the hydraulic cylinder is connected to another port of the hydraulic motor through a check valve. The check valve is used to restrict the hydraulic oil in the rodless chamber from entering the hydraulic motor.

[0007] Preferably, a priority valve for controlling flow rate is connected between the rod chamber of the hydraulic cylinder and the sequence valve.

[0008] Preferably, the valve core of the sequence valve is connected to a damping plug.

[0009] Preferably, it also includes a differential relief valve directly connected in parallel with the hydraulic motor.

[0010] Preferably, the system further includes a valve block, which is provided with an oil inlet, an oil return port, a first working port, and a second working port. The oil inlet is connected to the rod chamber of the hydraulic cylinder, and the oil return port is connected to the rodless chamber of the hydraulic cylinder. The first working port and the second working port are respectively connected to two oil ports of the hydraulic motor. The sequence valve, the check valve, the priority valve, the damping plug, and the differential relief valve are all installed on the valve block.

[0011] Preferably, the valve block is a cuboid block, the sequence valve, the priority valve and the differential relief valve are mounted on the valve block, the damping plug is a plug built into and mounted on the side of the valve block, and the one-way valve is mounted on the front of the valve block.

[0012] Preferably, the oil inlet and the oil return port are located on the front side of the valve block, and the first working port and the second working port are located on the back side of the valve block.

[0013] Preferably, each side of the valve block is provided with a process hole and sealed with a steel plug. The oil inlet and the oil return are connected to the hydraulic cylinder through a soft oil pipe, and the first working port and the second working port are connected to the hydraulic motor through a soft oil pipe.

[0014] Preferably, the bottom surface of the valve block is provided with multiple threaded mounting holes.

[0015] The present invention provides a demolition device, including a crushing pliers and an automatic rotation system connected to the crushing pliers, wherein the automatic rotation system is specifically any of the automatic rotation systems described above.

[0016] This invention provides an automatic rotation system, including a hydraulic cylinder for driving the opening and closing of a crusher and a hydraulic motor for driving the rotation of the equipment. The rod chamber of the hydraulic cylinder is connected to one port of the hydraulic motor through a sequence valve. When the pressure in the rod chamber of the hydraulic cylinder reaches a preset value, the sequence valve is opened, allowing the hydraulic oil in the rod chamber to enter and drive the hydraulic motor. The rodless chamber of the hydraulic cylinder is connected to another port of the hydraulic motor through a check valve. The check valve is used to restrict the hydraulic oil in the rodless chamber from entering the hydraulic motor.

[0017] During operation, an additional oil supply system connects to the hydraulic cylinder. When the hydraulic cylinder extends, the crushing jaws close; when it retracts, they open. The oil supply system supplies oil to the rod chamber of the hydraulic cylinder. As the cylinder retracts to its final position, pressure builds up, and when the pressure in the rod chamber reaches a preset value, the sequence valve opens, allowing hydraulic oil to enter the hydraulic motor and drive it to rotate in one direction. During this process, hydraulic oil enters through one port of the hydraulic motor and exits through the other, then is discharged through a check valve and the rodless chamber. While the pressure in the rodless chamber changes constantly during cylinder extension, the check valve prevents it from affecting the pressure in other parts of the system, and the hydraulic motor remains inactive during this time.

[0018] Automatic rotation is achieved by using a sequence valve. The oil circuit only needs to be connected to the hydraulic cylinder, eliminating the need for a separate rotation oil circuit. This simplifies the structure, reduces costs, minimizes oil circuit connections, reduces the frequency of accidents, improves reliability, simplifies operation, and enhances system stability.

[0019] The present invention also provides a demolition device including the above-mentioned automatic rotation system. Since the above-mentioned automatic rotation system has the above-mentioned technical effects, the above-mentioned demolition device should also have the same technical effects, and will not be described in detail here. Attached Figure Description

[0020] Figure 1 A hydraulic schematic diagram of a specific embodiment of the automatic rotary system provided by the present invention;

[0021] Figure 2 A schematic diagram of the valve block in a specific embodiment of the automatic rotary system provided by the present invention;

[0022] Figure 3 A front view of the valve block in a specific embodiment of the automatic rotary system provided by the present invention;

[0023] Figure 4 This is a rear view of the valve block in one specific embodiment of the automatic rotary system provided by the present invention.

[0024] Figure 5 This is a bottom view of the valve block in one specific embodiment of the automatic rotary system provided by the present invention.

[0025] Among them, 1. Hydraulic cylinder; 2. Hydraulic motor; 3. Sequence valve; 4. Check valve; 5. Priority valve; 6. Damping plug; 7. Differential relief valve; 8. Valve block; 9. Steel plug; 10. Threaded mounting hole; V1, oil inlet; V2, oil return port; C1, first working port; C2, second working port. Detailed Implementation

[0026] The core of this invention is to provide an automatic rotation system that achieves automatic rotation through a sequence valve, simplifying the structure, reducing oil circuit connections, and improving system stability. Another core aspect of this invention is to provide a demolition device that includes the aforementioned automatic rotation system.

[0027] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Please refer to Figure 1 , Figure 1 This is a hydraulic schematic diagram of a specific embodiment of the automatic rotary system provided by the present invention.

[0029] This invention provides an automatic rotation system, including a hydraulic cylinder 1, a hydraulic motor 2, a sequence valve 3, and a check valve 4. The hydraulic cylinder 1 is connected to an oil supply system and is used to drive the opening and closing of the crushing shears. The hydraulic motor 2 is used to drive the equipment rotation. The rod chamber of the hydraulic cylinder 1 is connected to one port of the hydraulic motor 2 via the sequence valve 3, and the rodless chamber of the hydraulic cylinder 1 is connected to the other port of the hydraulic motor 2 via the check valve 4. The sequence valve 3 is a pressure regulating valve; it closes when the pressure is insufficient and opens when the pressure reaches a preset value. When the pressure in the rod chamber of the hydraulic cylinder 1 reaches the preset value, the sequence valve 3 opens, allowing hydraulic oil in the rod chamber to enter through the sequence valve 3 and drive the hydraulic motor 2. The check valve 4 allows hydraulic oil from the hydraulic motor 2 to enter the rod chamber of the hydraulic cylinder 1 and restricts hydraulic oil in the rodless chamber from entering the hydraulic motor 2. This forms a hydraulic circuit consisting of the rod chamber of the hydraulic cylinder 1, the sequence valve 3, the hydraulic motor 2, the check valve 4, and the rodless chamber of the hydraulic cylinder 1.

[0030] During operation, an additional oil supply system is connected to hydraulic cylinder 1. When hydraulic cylinder 1 extends, the crushing jaws close; when hydraulic cylinder 1 retracts, the crushing jaws open. The oil supply system supplies oil to the rod chamber of hydraulic cylinder 1. When hydraulic cylinder 1 retracts to its end, pressure builds up, and when the pressure in the rod chamber reaches a preset value, sequence valve 3 opens, allowing hydraulic oil to enter hydraulic motor 2 and drive it to rotate in one direction. During this process, hydraulic oil enters through one port of hydraulic motor 2 and exits through the other, then is discharged through check valve 4 and the rodless chamber. When hydraulic cylinder 1 is in other states, the pressure in the rod chamber cannot open sequence valve 3, so sequence valve 3 remains closed, and hydraulic motor 2 does not rotate. When hydraulic cylinder 1 extends, although the pressure in the rodless chamber changes constantly, regardless of the pressure magnitude, due to the action of check valve 4, it does not affect the pressure in other parts of the system; therefore, hydraulic motor 2 does not operate at this time.

[0031] Automatic rotation is achieved by using sequence valve 3. The oil circuit only needs to be connected to hydraulic cylinder 1, eliminating the need for a separate rotation oil circuit. This simplifies the structure, reduces costs, minimizes oil circuit connections, reduces the frequency of accidents, improves reliability, simplifies operation, and enhances system stability.

[0032] To improve system stability, a priority valve 5 is connected between the rod chamber of hydraulic cylinder 1 and sequence valve 3 to control flow, protect hydraulic motor 2 to rotate at a constant speed, and reduce flow shocks in hydraulic cylinder 1. The valve core of sequence valve 3 can also be connected to one end of damping plug 6, and the other end of damping plug 6 can be connected to the inlet of check valve 4 to stabilize the valve core of sequence valve 3, reduce fluctuations, and decrease vibration and noise. Preferably, a differential relief valve 7 is also included, directly connected in parallel with hydraulic motor 2. That is, the two ports of differential relief valve 7 are respectively connected to the two ports of hydraulic motor 2, without any other components in between, protecting hydraulic motor 2 and relieving excess flow inside the hydraulic motor when shocks occur. The types of valves can be adjusted as needed, all within the scope of protection of this invention.

[0033] Please refer to Figures 2 to 5 , Figure 2 A schematic diagram of the valve block in a specific embodiment of the automatic rotary system provided by the present invention; Figure 3 A front view of the valve block in a specific embodiment of the automatic rotary system provided by the present invention; Figure 4 This is a rear view of the valve block in one specific embodiment of the automatic rotary system provided by the present invention. Figure 5 This is a bottom view of the valve block in one specific embodiment of the automatic rotary system provided by the present invention.

[0034] To simplify the structure and improve integration, a valve block 8 can be set up. The valve block 8 is provided with an oil inlet V1, an oil return port V2, a first working port C1 and a second working port C2. The oil inlet V1 is connected to the rod chamber of the hydraulic cylinder 1, and the oil return port V2 is connected to the rodless chamber of the hydraulic cylinder 1. The first working port C1 and the second working port C2 are respectively connected to the two oil ports of the hydraulic motor 2. The sequence valve 3, the check valve 4, the priority valve 5, the damping plug 6 and the differential relief valve 7 are all installed on the valve block 8.

[0035] Specifically, valve block 8 is a cuboid block. Sequence valve 3, priority valve 5, and differential relief valve 7 are mounted on valve block 8. Damping plug 6 is an internal plug mounted on the side of valve block 8, and check valve 4 is mounted on the front of valve block 8. Oil inlet V1 and oil return port V2 are located on the front of valve block 8, and first working port C1 and second working port C2 are located on the back of valve block 8. Of course, the positions of each valve can be adjusted as needed.

[0036] Meanwhile, process holes are provided on each side of the valve block 8 and are sealed by steel plugs 9. The oil inlet V1 and the oil return V2 are connected to the hydraulic cylinder 1 through soft oil pipes, and the first working port C1 and the second working port C2 are connected to the hydraulic motor 2 through soft oil pipes.

[0037] Based on the automatic rotary system provided in the above specific embodiments, the bottom surface of the valve block 8 is provided with a plurality of threaded mounting holes 10 for stable installation of the valve block 8, or other connection methods are adopted, such as snap-fit ​​connection, bracket connection, etc., all of which are within the protection scope of the present invention.

[0038] In addition to the aforementioned automatic rotation system, a specific embodiment of the present invention also provides a demolition device including the aforementioned automatic rotation system. The structure of other parts of the demolition device is described in the prior art and will not be repeated here.

[0039] The automatic rotary system and demolition equipment provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. An automatic swivel system, characterized in that, The hydraulic cylinder (1) for driving the opening and closing of the breaking pliers and the hydraulic motor (2) for driving the rotation of the equipment are included, the rod cavity of the hydraulic cylinder (1) is connected with one oil port of the hydraulic motor (2) through the sequence valve (3), the sequence valve (3) is turned on when the pressure in the rod cavity of the hydraulic cylinder (1) reaches the preset value, so that the hydraulic oil in the rod cavity enters and drives the hydraulic motor (2), the rodless cavity of the hydraulic cylinder (1) is connected with the other oil port of the hydraulic motor (2) through the one-way valve (4), and the one-way valve (4) is used for limiting the hydraulic oil in the rodless cavity to enter the hydraulic motor (2); The priority valve (5) for controlling the flow is connected between the rod cavity of the hydraulic cylinder (1) and the sequence valve (3); The valve core of the sequence valve (3) is connected with the damping plug (6); The differential overflow valve (7) is further included and is connected with the hydraulic motor (2) in parallel; The valve block (8) is further included, the oil inlet port (V1), the oil return port (V2), the first working port (C1) and the second working port (C2) are arranged on the valve block (8), the oil inlet port (V1) is communicated with the rod cavity of the hydraulic cylinder (1), the oil return port (V2) is communicated with the rodless cavity of the hydraulic cylinder (1), the first working port (C1) and the second working port (C2) are respectively communicated with two oil ports of the hydraulic motor (2), and the sequence valve (3), the one-way valve (4), the priority valve (5), the damping plug (6) and the differential overflow valve (7) are all installed on the valve block (8).

2. The automatic swivel system according to claim 1, characterized in that The valve block (8) is a cuboid block, the sequence valve (3), the priority valve (5) and the differential overflow valve (7) are installed on the upper surface of the valve block (8), the damping plug (6) is a plug with a built-in and is installed on the side surface of the valve block (8), and the one-way valve (4) is installed on the front surface of the valve block (8).

3. The automatic swivel system of claim 2, wherein, The oil inlet port (V1) and the oil return port (V2) are arranged on the front surface of the valve block (8), and the first working port (C1) and the second working port (C2) are arranged on the back surface of the valve block (8).

4. The automatic swivel system of claim 3, wherein, Process holes are arranged on each side surface of the valve block (8) and are blocked by steel plugs (9), the oil inlet port (V1) and the oil return port (V2) are connected with the hydraulic cylinder (1) through soft oil pipes, and the first working port (C1) and the second working port (C2) are connected with the hydraulic motor (2) through soft oil pipes.

5. The automatic swivel system according to any one of claims 1 to 4, characterized in that A plurality of threaded mounting holes (10) are arranged on the bottom surface of the valve block (8).

6. A breaking device comprising breaking tongs and an automatic rotation system connecting the breaking tongs, characterized in that, The automatic rotation system is the automatic rotation system according to any one of claims 1 to 5.

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