Automatic pressure relief oil cylinder with balance valve

Abstract

The utility model discloses an automatic pressure relief oil cylinder with a balance valve, which belongs to the technical field of oil cylinders and comprises an oil cylinder body, a piston rod is arranged in the oil cylinder body, a balance valve body is arranged on one side of the oil cylinder body, a first oil pipe is fixedly connected between the balance valve body and the oil cylinder body, and a second oil pipe is arranged on the oil cylinder body. A second oil pipe is fixedly connected between the balance valve body and the oil cylinder body, a clamping mechanism is arranged outside the oil cylinder body, and a replacing mechanism is arranged inside the clamping mechanism. According to the utility model, through the arrangement of the replacement mechanism, the replacement part can be independently replaced, the operation can be carried out only by manufacturing the replacement part for the oil cylinder body, and then the oil cylinder body is adapted through the replacement part, so that the capability of adapting to the oil cylinder body is greatly improved, and the protective shell can be applied to various different oil cylinder bodies and working conditions; and the application range of the product is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil cylinder especially relates to an automatic pressure relief oil cylinder with balance valve. BACKGROUND

[0002] Hydraulic cylinder is the energy conversion device that converts hydraulic energy into reciprocating linear motion, it is converted into mechanical energy with hydraulic energy, and when it is used to realize reciprocating motion, the speed and stability of the load can be controlled, and the hydraulic cylinder with balance valve is often applied to the hydraulic system of various equipment, which plays a very key role in load holding, load control and load safety.

[0003] The existing hydraulic cylinder usually installs the balance valve to ensure the stability of hydraulic oil delivery, some hydraulic lifting systems have a harsh working environment, and the balance valve is easy to collide with other parts, causing damage to the balance valve, thereby affecting the normal work of the hydraulic lifting system, the general solution is to install a protective shell outside the balance valve, but the protective shell can only be adapted to a single model for installation, reducing the applicability of the protective shell, and when the balance valve needs to be repaired or replaced, the operation process is relatively cumbersome.

[0004] Therefore, it is urgent to provide an automatic pressure relief oil cylinder with a balance valve to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of overcoming the above-mentioned prior art, and provides an automatic pressure relief oil cylinder with a balance valve.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide an automatic pressure relief oil cylinder with a balance valve, which comprises an oil cylinder body, a piston rod is arranged inside the oil cylinder body, a balance valve body is arranged on one side of the oil cylinder body, a first oil pipe is fixedly connected between the balance valve body and the oil cylinder body, a second oil pipe is fixedly connected between the balance valve body and the oil cylinder body, a clamping mechanism is arranged outside the oil cylinder body, and a replacement mechanism is arranged inside the clamping mechanism.

[0007] Through the above technical scheme, the oil cylinder body realizes reciprocating motion through the piston rod, the first oil pipe and the second oil pipe play the role of delivering hydraulic oil, ensuring that the hydraulic oil can circulate between the oil cylinder body and the balance valve body, thereby adjusting the pressure in the oil cylinder and ensuring the stability of the oil cylinder.

[0008] The utility model further sets up: the clamping mechanism includes the protection shell of inlaying in the balance valve body one side, the inner wall rotation of protection shell is installed with one end and extends to its outside's clamping worm.

[0009] Through the above technical scheme, the protection shell protects and fixes the balance valve body and other components, and the clamping worm is manually rotated by the hexagonal rod tool.

[0010] The utility model further sets up: the inner wall rotation of protection shell is installed with two -way screw rod, the outside fixed mounting of two -way screw rod has clamping worm wheel, the outer surface of clamping worm wheel is engaged with the outer surface of clamping worm.

[0011] Through the above technical scheme, the clamping worm is rotated by the clamping worm wheel driving two -way screw rod.

[0012] The utility model further sets up: the outer surface screw of two -way screw rod installs with two telescopic sliding blocks with ball nut seat, one end of two telescopic sliding blocks is all fixed mounting has clamping plate, and the inside of two clamping plates is all embedded and installs with replacement spare.

[0013] Through the above technical scheme, the telescopic sliding block is driven by two -way screw rod and moves telescopically through the protection shell, and the telescopic sliding block drives the clamping plate and replacement spare to fix the oil cylinder body.

[0014] The utility model further sets up: the replacement mechanism includes the replacement worm that rotates and installs in the inner wall of protection shell, the inner wall rotation of protection shell has internal hex sleeve, the outside fixed mounting of internal hex sleeve has replacement worm wheel, the outer surface of replacement worm wheel is engaged with the outer surface of replacement worm.

[0015] Through the above technical scheme, the replacement worm is rotated by the replacement worm wheel driving internal hex sleeve through the hexagonal rod tool manual rotation.

[0016] The utility model further sets up: the both sides of internal hex sleeve are all slidingly installed with one end and extends to the inside of clamping plate's hexagonal head rod, and one end of two hexagonal head rods is all fixed mounting has disc lifting rod.

[0017] Through the above technical scheme, internal hex sleeve drives hexagonal head rod and disc lifting rod and rotates, and the telescopic of clamping plate drives hexagonal head rod through internal hex sleeve.

[0018] The utility model further sets up: the inner wall fixed mounting of clamping plate has cylindrical spring, the other end fixed mounting of cylindrical spring has spring plug rod, one end and extends to the inside of replacement spare, the top end fixed mounting of spring plug rod has lifting sliding block cover, and the side of lifting sliding block cover and the side of disc lifting rod are self -adaptation sliding connection.

[0019] Through the technical scheme, the cylindrical spring drives the spring inserting rod to fix the replacement part inside the clamping plate, when the disc lifting rod rotates, the disc lifting rod drives the lifting sliding block sleeve to lift, the lifting sliding block sleeve drives the spring inserting rod to lift, so that the replacement part can be removed and replaced.

[0020] The utility model discloses the beneficial effect is as follows:

[0021] 1. The utility model discloses a replacement mechanism can be replaced separately to replacement part, only needs to be operated to replacement part to oil cylinder body, and then through the replacement part adaptation oil cylinder body, greatly improve the ability of adaptation oil cylinder body, so that the protective housing can be applied to a variety of different oil cylinder body and working condition, broaden the use range of product.

[0022] 2. The utility model discloses a clamping mechanism can be quickly disassembled to protective housing, when needing to maintain and replace balance valve body, maintenance personnel do not need to spend a lot of time to carry out complicated operation as before, can remove the protective housing in short period of time, greatly improve the maintenance efficiency, the whole process is quick and convenient, reduces the time of equipment downtime because of maintenance. ACCURACY OF DRAWINGS

[0023] Figure 1 It is the three -dimensional structure diagram of the utility model;

[0024] Figure 2 It is the oil cylinder body structure diagram of the utility model;

[0025] Figure 3 It is the clamping mechanism structure diagram of the utility model;

[0026] Figure 4 It is the replacement mechanism structure diagram of the utility model;

[0027] Figure 5 It is the clamping plate internal structure diagram of the utility model;

[0028] Figure 6 It is the replacement mechanism explosion structure diagram of the utility model.

[0029] In the drawing: 1, oil cylinder body;2, piston rod;3, balance valve body;4, first oil pipe;5, second oil pipe;6, clamping mechanism;601, protective housing;602, clamping worm;603, bidirectional screw;604, clamping worm wheel;605, telescopic sliding block;606, clamping plate;607, replacement part;7, replacement mechanism;701, replacement worm;702, internal hex sleeve;703, replacement worm wheel;704, hexagonal head rod;705, disc lifting rod;706, cylindrical spring;707, spring inserting rod;708, lifting sliding block sleeve. DETAILED DESCRIPTION

[0030] The advantages and features of the present application will be more apparent from the following detailed description of preferred embodiments of the present application, taken in conjunction with the accompanying drawings, in which:

[0031] Please refer to Figures 1-6 The automatic pressure relief oil cylinder with a balance valve comprises an oil cylinder body 1, a piston rod 2 arranged in the oil cylinder body 1, a balance valve body 3 arranged on one side of the oil cylinder body 1, a first oil pipe 4 fixedly connected between the balance valve body 3 and the oil cylinder body 1, a second oil pipe 5 fixedly connected between the balance valve body 3 and the oil cylinder body 1, a clamping mechanism 6 arranged on the outside of the oil cylinder body 1, wherein the clamping mechanism 6 comprises a protective shell 601 attached to one side of the balance valve body 3, a clamping worm 602 rotatably installed on the inner wall of the protective shell 601 and extending to the outside of the protective shell 601, a bidirectional screw rod 603 rotatably installed on the inner wall of the protective shell 601, a clamping worm wheel 604 fixedly installed on the outside of the bidirectional screw rod 603, the outer surface of the clamping worm wheel 604 being engaged with the outer surface of the clamping worm 602, two telescopic sliding blocks 605 with ball nut seats being threadedly installed on the outer surface of the bidirectional screw rod 603, a clamping plate 606 fixedly installed on one end of each of the two telescopic sliding blocks 605, and a replacement part 607 embeddedly installed in the inside of each of the two clamping plates 606. The oil cylinder body 1 realizes reciprocating motion through the piston rod 2. The first oil pipe 4 and the second oil pipe 5 play a role in conveying hydraulic oil, ensuring that the hydraulic oil can flow between the oil cylinder body 1 and the balance valve body 3, thereby adjusting the pressure in the oil cylinder and ensuring the stability of the oil cylinder operation. The protective shell 601 plays a role in protecting and fixing the balance valve body 3 and other components. The clamping worm 602 is manually rotated by a hexagonal rod tool, and the clamping worm 602 drives the bidirectional screw rod 603 to rotate through the clamping worm wheel 604. The bidirectional screw rod 603 drives the telescopic sliding blocks 605 to move in and out through the protective shell 601. The telescopic sliding blocks 605 drive the clamping plates 606 and the replacement parts 607 to fix the oil cylinder body 1.

[0032] As Figures 4-6As shown, the inside of the clamping mechanism 6 is provided with a replacement mechanism 7, the replacement mechanism 7 comprises a replacement worm 701 rotatably installed on the inner wall of the protective shell 601, the inner wall of the protective shell 601 is rotatably installed with a hexagonal sleeve 702, the outside of the hexagonal sleeve 702 is fixedly installed with a replacement worm gear 703, the outer surface of the replacement worm gear 703 is meshed with the outer surface of the replacement worm 701, both sides of the hexagonal sleeve 702 are slidably installed with a hexagonal head rod 704, one end of which penetrates and extends into the inside of the clamping plate 606, the ends of the two hexagonal head rods 704 are fixedly installed with a disc lifting rod 705, the inner wall of the clamping plate 606 is fixedly installed with a cylindrical spring 706, the other end of the cylindrical spring 706 is fixedly installed with a spring insertion rod 707, one end of which penetrates and extends into the inside of the replacement part 607, the top end of the spring insertion rod 707 is fixedly installed with a lifting sliding block sleeve 708, one side of the lifting sliding block sleeve 708 is adaptively and slidably connected with one side of the disc lifting rod 705, the replacement worm 701 is manually rotated through the hexagonal rod tool, the replacement worm 701 drives the hexagonal sleeve 702 to rotate through the replacement worm gear 703, the hexagonal sleeve 702 drives the hexagonal head rod 704 and the disc lifting rod 705 to rotate, the clamping plate 606 drives the hexagonal head rod 704 to extend and retract through the hexagonal sleeve 702, the cylindrical spring 706 drives the spring insertion rod 707 to fix the replacement part 607 in the inside of the clamping plate 606, when the disc lifting rod 705 rotates, the disc lifting rod 705 drives the lifting sliding block sleeve 708 to lift, the lifting sliding block sleeve 708 drives the spring insertion rod 707 to rise, so that the replacement part 607 can be removed and replaced.

[0033] The utility model discloses a balance valve body 3 and the protection shell 601 are fixed through the telescopic slide block 605, the telescopic slide block 605 drives the clamping plate 606 and the replacement spare 607 to fix the oil cylinder body 1, the clamping plate 606 drives the hexagonal head pole 704 to carry out synchronous telescopic through the internal hexagonal sleeve 702, when dismounting the replacement spare 607, through the hexagonal rod tool manual rotation replacement worm 701, replacement worm 701 drives the internal hexagonal sleeve 702 to rotate through replacement worm wheel 703, the internal hexagonal sleeve 702 drives the hexagonal head pole 704 and disc lifting pole 705 to rotate, disc lifting pole 705 drives the lifting slide block cover 708 to ascend, the lifting slide block cover 708 drives spring plug pole 707 to ascend, so that replacement spare 607 can be taken down and change, after loosening replacement worm 701, cylindrical spring 706 drives spring plug pole 707 to fix replacement spare 607 in the inside of clamping plate 606.

[0034] The above-mentioned is only the embodiment of the utility model, and does not restrict the patent range of the utility model, and any equivalent structure or equivalent process conversion using the utility model specification and the attached drawing contents, or direct or indirect application in other related technical fields, all are included in the patent protection range of the utility model.

Claims

1. An automatic pressure relief cylinder with a balance valve, comprising a cylinder body (1), characterized in that: The cylinder body (1) is provided with a piston rod (2) inside, and a balance valve body (3) is provided on one side of the cylinder body (1). A first oil pipe (4) is fixedly connected between the balance valve body (3) and the cylinder body (1), and a second oil pipe (5) is fixedly connected between the balance valve body (3) and the cylinder body (1). The cylinder body (1) is provided with a clamping mechanism (6) on its exterior. The clamping mechanism (6) includes a protective shell (601) that fits against one side of the balance valve body (3). A clamping worm (602) with one end penetrating through and extending to the outside is rotatably installed on the inner wall of the protective shell (601). A double-acting screw (603) is rotatably installed on the inner wall of the protective shell (601). A clamping worm wheel (604) is fixedly installed on the outside of the double-acting screw (603). The outer surface of the clamping worm wheel (604) meshes with the outer surface of the clamping worm (602). Two telescopic sliders (605) with ball nut seats are threadedly installed on the outer surface of the double-acting screw (603). A clamping plate (606) is fixedly installed on one end of each of the two telescopic sliders (605). Replacement parts (607) are fitted inside each of the two clamping plates (606). The clamping mechanism (6) is internally provided with a replacement mechanism (7). The replacement mechanism (7) includes a replacement worm (701) rotatably mounted on the inner wall of the protective shell (601). An internal hexagonal sleeve (702) is rotatably mounted on the inner wall of the protective shell (601). A replacement worm wheel (703) is fixedly mounted on the outside of the internal hexagonal sleeve (702). The outer surface of the replacement worm wheel (703) meshes with the outer surface of the replacement worm (701). Both sides of the internal hexagonal sleeve (702) are slidably mounted with one end penetrating and extending to the clamping plate (606). The internal hexagonal head rod (704) has a disc lifting rod (705) fixedly installed at one end of each of the two hexagonal head rods (704). A columnar spring (706) is fixedly installed on the inner wall of the clamping plate (606). A spring insert (707) with one end penetrating and extending into the interior of the replacement part (607) is fixedly installed at the other end of the columnar spring (706). A lifting slider sleeve (708) is fixedly installed at the top of the spring insert (707). One side of the lifting slider sleeve (708) is adaptively slidably connected to one side of the disc lifting rod (705).

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