Hydraulic cylinder locking mechanism

Abstract

The utility model discloses a hydraulic cylinder locking mechanism, and relates to the technical field of hydraulic cylinder accessories. The hydraulic cylinder comprises a locking and positioning mechanism which is loaded and fixed outside a hydraulic cylinder body; the hydraulic cylinder body comprises a cylindrical cylinder body and a piston rod arranged in the cylindrical cylinder body in a telescopic mode. The locking and positioning mechanism comprises a positioning sleeve fixed outside the cylindrical cylinder body through a fastener, a connecting sleeve fixed with the positioning sleeve through a connecting rod, a guide rod fixed at one end of the connecting sleeve through a screw, a balance sleeve assembled at the end part of the guide rod, and a locking buckle mounted at the end part of the balance sleeve in a thread fit manner. The locking and positioning mechanism is arranged outside the hydraulic cylinder body, the position of the piston rod can be locked without depending on a hydraulic system, when the hydraulic system stops working or breaks down, the mechanical locking mechanism can prevent the piston rod from moving accidentally, the overall safety of equipment is improved, and the service life of the hydraulic cylinder is prolonged. The locking buckle directly acts on the piston rod, and stable physical constraining force is provided.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinder accessories, in particular to a hydraulic cylinder locking mechanism. Background Art

[0002] A hydraulic cylinder is an actuator widely used in various mechanical equipment. It uses liquid pressure to achieve linear reciprocating motion or oscillation. Hydraulic cylinders are indispensable key components in many fields, including industry, construction, and agriculture. When the hydraulic system stops working or fails, the piston rod may move unexpectedly due to external forces, which may not only damage the equipment but also cause harm to the operator. To overcome the above problems, some improvement measures have been proposed and implemented, but these solutions also have certain limitations:

[0003] Some hydraulic cylinders have integrated locking mechanisms, such as spring-loaded claws or wedge blocks. Although this design is more compact, it may experience increased wear or failure under high loads or long-term locking conditions. Some high-end hydraulic systems use electronic control methods to achieve the locking function, such as solenoid valve control. Although this method improves the degree of automation, it is costly and highly dependent on power supply, making it unsuitable for all application scenarios.

[0004] To this end, we provide a hydraulic cylinder locking mechanism to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a hydraulic cylinder locking mechanism, which solves the problems of insufficient stability, complicated structure and high cost of the existing hydraulic cylinder locking mechanism by physically locking the piston rod through a locking positioning mechanism.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a hydraulic cylinder locking mechanism, comprising a locking positioning mechanism fixed to the outside of the hydraulic cylinder body;

[0008] The hydraulic cylinder body comprises a cylindrical cylinder body and a piston rod telescopically arranged inside the cylindrical cylinder body;

[0009] The locking and positioning mechanism includes a positioning sleeve fixed to the outside of the cylindrical cylinder body through fasteners, a connecting sleeve fixed to the positioning sleeve through a connecting rod, a guide rod fixed to one end of the connecting sleeve through screws, a balancing sleeve assembled on the end of the guide rod, and a locking buckle threadedly adapted to be installed on the end of the balancing sleeve.

[0010] The utility model is further configured such that the hydraulic cylinder body is also installed with a mounting assembly, wherein the mounting assembly includes a kit fixed to the end of the cylindrical cylinder body, a shaft sleeve integrally arranged on the side of the kit, and a mounting plate movably connected to the shaft sleeve via a connecting shaft.

[0011] The present invention is further configured such that the inner end of the locking buckle contacts the peripheral side of the piston rod, and one end of the balancing sleeve is provided with a threaded hole for installing and adjusting the locking buckle.

[0012] The present invention is further configured such that the balancing sleeve is an integral bent structure, one end of the balancing sleeve is sleeved on the outside of the piston rod, and the other end of the balancing sleeve is installed axially along the guide rod.

[0013] The utility model is further configured such that one end of the balancing sleeve is arranged in parallel and spaced apart from the output end of the cylindrical cylinder body, and the balancing sleeve is provided with a limiting hole for transitional fit with the piston rod.

[0014] The present invention is further configured such that a connecting rod is fixed to the end of the piston rod, a mounting hole is provided at the end of the connecting rod, and the connecting rod is fixed to an external mounting structure via a fastener.

[0015] The present invention is further configured such that the inner side of the balancing sleeve contacts the sleeve assembly, and the outer diameter of one end of the balancing sleeve connected to the guide rod is larger than the outer diameter of the other end thereof.

[0016] The utility model has the following beneficial effects:

[0017] 1. The utility model provides a locking and positioning mechanism on the outside of the hydraulic cylinder body, which can lock the position of the piston rod without relying on the hydraulic system. When the hydraulic system stops working or fails, this mechanical locking mechanism can prevent the piston rod from moving accidentally, thereby improving the overall safety of the equipment.

[0018] 2. The utility model directly acts on the piston rod through the locking buckle, providing a stable physical restraint force, avoiding instability caused by hydraulic leakage or other reasons, and ensuring the stability and reliability of equipment operation.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic diagram of the upper front side of the overall structure of a hydraulic cylinder locking mechanism.

[0022] Figure 2 This is a schematic diagram of the upper back side of the overall structure of a hydraulic cylinder locking mechanism.

[0023] Figure 3 This is a schematic diagram of the lower front side of the overall structure of a hydraulic cylinder locking mechanism.

[0024] Figure 4 This is a schematic diagram of the lower back of the overall structure of a hydraulic cylinder locking mechanism.

[0025] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0026] 1-Hydraulic cylinder body, 101-Cylindrical cylinder body, 102-Piston rod, 2-Locking and positioning mechanism, 201-Positioning sleeve, 202-Connecting sleeve, 203-Guide rod, 204-Balancing sleeve, 205-Locking buckle, 206-Connecting rod, 3-Mounting assembly, 301-Kit, 302-Sleeve, 303-Mounting plate, 304-Connecting shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figure 1-4 , the utility model is a hydraulic cylinder locking mechanism, comprising a locking positioning mechanism 2 mounted and fixed on the outside of a hydraulic cylinder body 1;

[0030] The hydraulic cylinder body 1 includes a cylindrical cylinder body 101 and a piston rod 102 that is telescopically arranged inside the cylindrical cylinder body 101. The cylindrical cylinder body 101 is the main shell of the hydraulic cylinder body 1 and is filled with hydraulic oil. When pressure is applied to the oil, the piston rod 102 is pushed or pulled back. The piston rod 102 maintains contact with the inner wall of the cylindrical cylinder body 101 through a sealing ring to ensure that the liquid does not leak, and can move telescopically within the cylindrical cylinder body 101.

[0031] The locking and positioning mechanism 2 includes a positioning sleeve 201 fixed to the outside of the cylindrical cylinder 101 by fasteners, a connecting sleeve 202 fixed to the positioning sleeve 201 by a connecting rod 206, a guide rod 203 fixed to one end of the connecting sleeve 202 by screws, a balancing sleeve 204 assembled on the end of the guide rod 203, and a locking buckle 205 threadedly adapted to be installed on the end of the balancing sleeve 204. The positioning sleeve 201 serves as the installation basis of the entire locking and positioning mechanism 2, and the connecting sleeve 202 is connected to the positioning sleeve 201 by a connecting rod 206. In order to transmit force, one end of the guide rod 203 is fixed on the connecting sleeve 202, and the other end is equipped with a balancing sleeve 204 to ensure that the force can be transmitted along a straight line. The balancing sleeve 204 is designed with a bent structure, one end of which is sleeved on the outside of the piston rod 102, and the other end is installed on the guide rod 203. It not only provides support for the piston rod 102, but also can adjust the position of the locking buckle 205 through the threaded hole on it. The locking buckle 205 can be moved inward by rotation until it contacts the surface of the piston rod 102 to achieve the locking function.

[0032] Specifically, the inner end of the locking buckle 205 is in conflict with the circumferential side of the piston rod 102, and one end of the balancing sleeve 204 is provided with a threaded hole for installing and adjusting the locking buckle 205; the balancing sleeve 204 is an integral bending structure, one end of the balancing sleeve 204 is sleeved on the outside of the piston rod 102, and the other end of the balancing sleeve 204 is installed axially along the guide rod 203.

[0033] Furthermore, one end of the balancing sleeve 204 is arranged in parallel with the output end of the cylindrical cylinder body 101, and the balancing sleeve 204 has a limiting hole for over-fitting with the piston rod 102. The inner side of the balancing sleeve 204 is in contact with the kit 301, and the outer diameter of one end of the balancing sleeve 204 connected to the guide rod 203 is larger than the outer diameter of the other end.

[0034] Furthermore, a connecting rod is fixed to the end of the piston rod 102, and a mounting hole is opened at the end of the connecting rod. The connecting rod is fixed to the external mounting structure via a fastener.

[0035] The operation process of this embodiment is as follows:

[0036] 1. Start the hydraulic pump and control the piston rod 102 to extend or retract to the desired position. When the predetermined position is reached, stop supplying oil. At this time, the piston rod 102 should remain stationary.

[0037] 2. Manually rotate the locking buckle 205 until it fits tightly against the surface of the piston rod 102, and increase the torque appropriately to ensure a secure lock.

[0038] 3. When the lock needs to be released, the locking buckle 205 is rotated in the reverse direction to move it away from the piston rod 102, and the hydraulic system is restarted to restore the normal operation of the piston rod 102;

[0039] 4. Regularly check whether the locking and positioning mechanism 2 is intact, replace severely worn parts in time, and clean the dirt on the surface of the hydraulic cylinder and each movable joint.

[0040] The above steps effectively prevent the piston rod 102 from accidentally moving in the non-operating state, thereby improving the overall safety of the system. By physically locking rather than relying on the hydraulic system to maintain the position, the reliability and stability of the system are increased.

[0041] Example 2

[0042] See also Figure 1-4 On the basis of the specific embodiment 1, the hydraulic cylinder body 1 is further installed with a mounting assembly 3, wherein the mounting assembly 3 includes a kit 301 fixed to the end of the cylindrical cylinder body 101, a sleeve 302 integrally arranged on the side of the kit 301, and a mounting plate 303 movably connected to the sleeve 302 via a connecting shaft 304. The kit 301 serves as a connecting piece between the cylindrical cylinder body 101 and the mounting assembly 3, providing a basic positioning installation for the mounting assembly 3. The sleeve 302 provides a rotation support point for the connecting shaft 304. The mounting plate 303 is connected to the sleeve 302 via the connecting shaft 304, allowing the angle and position to be adjusted to meet different installation requirements.

[0043] The operation process of this embodiment is as follows:

[0044] 1. Confirm that all parts are complete and intact, and install the hydraulic cylinder correctly to the designated position according to the design requirements;

[0045] 2. Adjust the angle of the mounting plate 303 according to actual needs to ensure that the hydraulic cylinder is in the best working condition and tighten all connections to ensure that there is no looseness.

[0046] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, numerous modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A hydraulic cylinder locking mechanism, comprising a locking and positioning mechanism (2) mounted and fixed on the outside of a hydraulic cylinder body (1); characterized in that: The hydraulic cylinder body (1) comprises a cylindrical cylinder body (101) and a piston rod (102) telescopically arranged inside the cylindrical cylinder body (101); The locking and positioning mechanism (2) comprises a positioning sleeve (201) fixed to the outside of the cylindrical cylinder (101) via a fastener, a connecting sleeve (202) fixed to the positioning sleeve (201) via a connecting rod (206), a guide rod (203) fixed to one end of the connecting sleeve (202) via a screw, a balancing sleeve (204) assembled to the end of the guide rod (203), and a locking buckle (205) threadedly mounted on the end of the balancing sleeve (204).

2. A hydraulic cylinder locking mechanism according to claim 1, characterized in that: The hydraulic cylinder body (1) is further provided with a mounting assembly (3), wherein the mounting assembly (3) comprises a sleeve (301) fixed to the end of the cylindrical cylinder body (101), a shaft sleeve (302) integrally provided on the side of the sleeve (301), and a mounting plate (303) movably connected to the shaft sleeve (302) via a connecting shaft (304).

3. The hydraulic cylinder locking mechanism according to claim 1, characterized in that: The inner end of the locking buckle (205) contacts the circumference of the piston rod (102), and one end of the balancing sleeve (204) is provided with a threaded hole for installing and adjusting the locking buckle (205).

4. The hydraulic cylinder locking mechanism according to claim 1, characterized in that: The balancing sleeve (204) is an integral bent structure, one end of the balancing sleeve (204) is sleeved on the outside of the piston rod (102), and the other end of the balancing sleeve (204) is axially installed along the guide rod (203).

5. The hydraulic cylinder locking mechanism according to claim 1, characterized in that: One end of the balancing sleeve (204) is arranged in parallel with the output end of the cylindrical cylinder body (101) and spaced apart, and the balancing sleeve (204) is provided with a limiting hole for overfitting with the piston rod (102).

6. The hydraulic cylinder locking mechanism according to claim 1, characterized in that: A connecting rod is fixed to the end of the piston rod (102), a mounting hole is provided at the end of the connecting rod, and the connecting rod is fixed to an external mounting structure via a fastener.

7. The hydraulic cylinder locking mechanism according to claim 1, characterized in that: The inner side of the balancing sleeve (204) contacts the sleeve (301), and the outer diameter of one end of the balancing sleeve (204) connected to the guide rod (203) is larger than the outer diameter of the other end.

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