Hydraulic cylinder with stable output

Abstract

The utility model provides a hydraulic cylinder with stable output, which relates to the technical field of hydraulic cylinders and is characterized in that the top end of a piston rod of the hydraulic cylinder is locked and fixed with a mounting disc through a screw, four positioning rod sleeves are symmetrically welded on the outer ring of the circumference of the mounting disc, and four protective shaft rods are inserted in the four positioning rod sleeves in a penetrating manner; the four protective shaft rods are correspondingly matched with the four positioning shaft sleeves in a sliding and penetrating manner; the four protective shaft rods are arranged on the periphery of a piston rod of the hydraulic cylinder in a surrounding mode and used for carrying out anti-collision protection on the piston rod. The top end of the hydraulic cylinder is slidably provided with four inserting positioning pieces arranged in a surrounding mode through pushing of springs, and the four inserting positioning pieces are used for inserting and positioning the four protective shaft rods. The four protection shaft rods are specifically components for resisting impact force, the four positioning shaft sleeves and the installation disc are movably and detachably installed, the positioning shaft sleeves can be independently detached and taken down to be replaced and repaired after being damaged by impact or deformed, the anti-collision protection mechanism does not need to be overall detached, and operation and use are convenient, fast and efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder with stable output. Background Art

[0002] A hydraulic cylinder is a device that converts hydraulic energy into mechanical energy. It is commonly used in various industrial and mechanical applications, such as industrial machinery, construction and civil engineering, agricultural machinery, aerospace, automotive industry and shipbuilding. It can realize various complex motion control and improve production efficiency and work safety.

[0003] In order to reduce the probability of damage by impact during use and ensure stable output of telescopic driving force, existing hydraulic cylinders are often equipped with a mechanism for shielding and protecting the piston telescopic rod. However, the components on these mechanisms for resisting impact force, such as interception protection rods or shafts, are often integrated and welded with the main body of the mechanism. As a result, they cannot be removed separately for replacement and repair after being damaged or deformed by impact. The protection mechanism and the hydraulic cylinder must be disassembled as a whole for replacement and repair, which is troublesome and inconvenient to operate. Utility Model Content

[0004] In view of this, the utility model provides a hydraulic cylinder with stable output to solve the problem that the components on the protective mechanism that resist impact force cannot be removed separately for replacement and repair after being damaged or deformed by impact, and the protective mechanism and the hydraulic cylinder must be disassembled as a whole for implementation, which is troublesome and inconvenient to operate.

[0005] The technical solution proposed by the utility model is: a hydraulic cylinder with stable output, specifically comprising a hydraulic cylinder, wherein four positioning sleeves are symmetrically welded at the top position of the hydraulic cylinder shell;

[0006] The top end of the hydraulic cylinder piston rod is fixed with a mounting plate by screw locking, and four positioning rod sleeves are symmetrically welded at the circumferential outer ring position of the mounting plate. The four positioning sleeves can support and hold the tail end of the four protective shaft rods, so that the four protective shaft rods can rely on the support of the four positioning sleeves to resist the impact force when they are hit, so as to avoid the tail end of the four protective shaft rods lacking auxiliary supporting force fulcrums, and simply relying on its own rigid holding force to resist the impact force, which is easy to be broken or deformed by the impact, which helps to ensure the normal and effective implementation of the interception and protection function of the four protective shaft rods. Four protective shaft rods are inserted through the four positioning rod sleeves, and the four protective shaft rods correspond to the four positioning sleeves for sliding and interlacing cooperation; the four protective shaft rods are placed around the periphery of the hydraulic cylinder piston rod for anti-collision protection of the piston rod; the top of the hydraulic cylinder is slidably installed with four surrounding plug-in positioning parts through spring pushing, and the four plug-in positioning parts are used for plugging and positioning the four protective shaft rods.

[0007] Furthermore,

[0008] The plug-in positioning member is composed of a bottom plug rod and an L-shaped push rod welded to the rear end of the plug rod. The top horizontal part of the L-shaped push rod is located above the top of the plug rod and is in the same direction and parallel to the plug rod.

[0009] Furthermore,

[0010] The head end portion of the insertion rod is inserted and matched with the top protruding portion of the protective shaft rod.

[0011] Furthermore,

[0012] Four groups of positioning ear blocks are welded around the top of the mounting plate, and each group of positioning ear blocks includes two positioning ear blocks spaced apart inside and outside.

[0013] Furthermore,

[0014] The inserting rods at four locations are pushed by springs to be plugged and matched with four groups of positioning ear blocks.

[0015] Furthermore,

[0016] Four vertical support shafts are welded around the top of the installation plate, which is located between the four groups of positioning ear blocks, and the tops of the four vertical support shafts are welded with connecting plates.

[0017] Furthermore,

[0018] The connecting plate is used for fixedly connecting with the external force-bearing unit to transmit the telescopic driving force of the hydraulic cylinder.

[0019] The utility model provides a hydraulic cylinder with stable output, which has the following beneficial effects:

[0020] When the utility model is in use, the protective shaft rods at four sides, the mounting plate, the positioning rod sleeves at four sides and the positioning shaft sleeves at four sides together constitute a mechanism for anti-collision protection of the piston rod. The protective shaft rods at four sides are components for specifically resisting impact force, and the positioning shaft sleeves at four sides and the mounting plate are movably and detachably installed. Compared with the existing technology in which the components for resisting impact force are integrated, welded and fixedly installed with the main body of the anti-collision protection mechanism, the protective shaft rods at four sides can be separately disassembled and removed for replacement and repair after being damaged or deformed by impact, and there is no need to disassemble the anti-collision protection mechanism as a whole, so the repair and maintenance of the anti-collision protection mechanism is more convenient and efficient.

[0021] In addition, when the protective shaft rods at four locations are connected and fixed to the mounting plate, they can extend and slide along with the piston rod to protect the piston rod in real time, and the protective effect is better.

[0022] In addition, the four positioning sleeves can support and hold the rear ends of the four protective shaft rods, so that the four protective shaft rods can rely on the support of the four positioning sleeves to resist the impact force when they are hit, avoiding the situation where the rear ends of the four protective shaft rods lack auxiliary supporting force fulcrums, and simply rely on their own rigid retaining force to resist the impact force, which may cause them to be easily broken or deformed by the impact, helping to ensure the normal and effective implementation of the interception and protection functions of the four protective shaft rods.

[0023] In addition, the four vertical support shafts support and form a spacing space of considerable height between the connecting plate and the mounting plate, and this spacing space can facilitate the disassembly and assembly of the locking and fixing bolts on the connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0025] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0026] In the attached picture:

[0027] Figure 1 The overall structure schematic diagram of the utility model is shown;

[0028] Figure 2 The overall bottom side structural schematic diagram of the utility model is shown;

[0029] Figure 3 A schematic diagram of the protective shaft rod of the utility model in a disassembled state is shown;

[0030] Figure 4 A schematic diagram showing a disassembled state of the installation plate of the utility model is shown;

[0031] Figure 5 Shows a schematic diagram of the installation disk structure of the utility model;

[0032] Figure 6 The schematic diagram of the bottom structure of the mounting plate of the utility model is shown;

[0033] Reference numerals list

[0034] 1. Hydraulic cylinder; 101. Positioning sleeve;

[0035] 2. Mounting plate; 201. Positioning rod sleeve; 202. Vertical support shaft; 203. Connecting plate; 204. Positioning ear block; 205. Plug-in positioning piece;

[0036] 3. Protect the shaft. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] Example 1, please refer to Figures 1 to 6 :

[0039] The utility model proposes a hydraulic cylinder with stable output, comprising a hydraulic cylinder 1, wherein four positioning sleeves 101 are symmetrically welded at the top of the outer shell of the hydraulic cylinder 1;

[0040] Among them, the top end of the piston rod of the hydraulic cylinder 1 is fixed with a mounting plate 2 by screw locking, and four positioning rod sleeves 201 are symmetrically welded on the circumferential outer ring of the mounting plate 2. Four protective shaft rods 3 are inserted through the four positioning rod sleeves 201. The four protective shaft rods 3 correspond to the four positioning sleeves 101 for sliding and interlacing cooperation. The four protective shaft rods 3, the mounting plate 2, the four positioning rod sleeves 201 and the four positioning sleeves 101 together constitute a mechanism for implementing anti-collision protection for the piston rod. The four protective shaft rods 3 are specific components for resisting impact force. The four positioning sleeves 101 and the mounting plate 2 are movably and detachably installed. Compared with the existing technology in which the component resisting impact force is integrated and welded with the main body of the anti-collision protection mechanism for fixed installation, the four protective shaft rods 3 are provided with a plurality of protective sleeves 101, each of which is provided with a plurality of protective sleeves 101. After the protective shaft rod 3 is damaged or deformed by impact, it can be removed and replaced and repaired separately, without the need to disassemble the anti-collision protection mechanism as a whole, and the repair and maintenance of the anti-collision protection mechanism is relatively convenient and efficient; the protective shaft rods 3 are placed around the periphery of the piston rod of the hydraulic cylinder 1 to provide anti-collision protection for the piston rod; the top of the hydraulic cylinder 1 is provided with four surrounding plug-in positioning members 205 through spring pushing and sliding, and the four plug-in positioning members 205 are used to plug and position the protective shaft rods 3 at four locations, and connect and fix the protective shaft rods 3 at four locations with the mounting plate 2. When the protective shaft rods 3 at four locations are connected and fixed with the mounting plate 2, they can move telescopically and slide along with the piston rod to protect the piston rod in real time, and the protective effect is better;

[0041] The four positioning sleeves 101 can limit the four protection shaft rods 3 to prevent them from twisting and shifting with the mounting plate 2, and when the four protection shaft rods 3 are in an upward withdrawal state (refer to Figure 1), the positioning sleeves 101 at four locations can support and hold the tail ends of the protective shaft rods 3 at four locations, so that the protective shaft rods 3 at four locations can rely on the support of the positioning sleeves 101 at four locations to resist the impact force when they are hit, thereby avoiding the situation where the tail ends of the protective shaft rods 3 at four locations lack auxiliary supporting fulcrums and simply rely on their own rigid retaining force to resist the impact force, which may cause them to be easily broken or deformed by the impact, thereby helping to ensure the normal and effective implementation of the interception and protection functions of the protective shaft rods 3 at four locations.

[0042] Specifically,

[0043] The plug-in positioning member 205 is composed of a bottom plug rod and an L-shaped push rod welded to the tail end of the plug rod. The top horizontal part of the L-shaped push rod is located above the top of the plug rod and is in the same direction and parallel to the plug rod. The L-shaped push rod can be used to push the plug rod inward and remove it, so as to disassemble and assemble the protective shaft rod 3.

[0044] Specifically,

[0045] The head end portion of the insertion rod is inserted and fitted with the top protruding portion of the protection shaft rod 3 .

[0046] Specifically,

[0047] Four groups of positioning lugs 204 are welded around the top of the mounting plate 2 , and each group of positioning lugs 204 includes two positioning lugs 204 spaced apart from each other.

[0048] Specifically,

[0049] The four insertion rods are pushed by springs to be plugged into and matched with the four groups of positioning ear blocks 204.

[0050] Based on the first embodiment, the second embodiment:

[0051] Four vertical support shafts 202 are welded around the top of the mounting plate 2, located between the four groups of positioning ear blocks 204. Connecting plates 203 are welded to the tops of the four vertical support shafts 202. The four vertical support shafts 202 support and form a spacing space of considerable height between the connecting plate 203 and the mounting plate 2. This spacing space can facilitate the disassembly and assembly of the locking and fixing bolts on the connecting plate 203.

[0052] Specifically,

[0053] The connecting plate 203 is used to be fixedly connected to an external force-bearing unit to transmit the telescopic driving force of the hydraulic cylinder 1 .

[0054] Working principle: When in use, the connecting plate 203 is used to be fixedly connected with the external force-bearing unit to transmit the telescopic driving force of the hydraulic cylinder 1;

[0055] The four-way protective shaft rod 3, the mounting plate 2, the four-way positioning rod sleeve 201 and the four-way positioning shaft sleeve 101 together constitute a mechanism for implementing anti-collision protection for the piston rod. The four-way protective shaft rod 3 is a component that specifically resists impact force. The four-way plug-in positioning pieces 205 are used to plug and position the four-way protective shaft rod 3, and the four-way protective shaft rod 3 is connected and fixed with the mounting plate 2. When the four-way protective shaft rod 3 is connected and fixed with the mounting plate 2, it can be telescopically slid along with the piston rod to protect the piston rod in real time. After the four-way protective shaft rod 3 is damaged or deformed by impact, the plug rod can be pushed inward by the L-shaped push rod to loosen and remove the protective shaft rod 3 for replacement or repair;

[0056] The four vertical support shafts 202 support and form a spacing space of considerable height between the connecting plate 203 and the mounting plate 2, and the spacing space is convenient for disassembling and assembling the locking and fixing bolts on the connecting plate 203.

[0057] In this article, there are a few points to note:

[0058] 1. The drawings of the embodiments of the present utility model only relate to the structures related to the embodiments of the present utility model, and other structures may refer to the usual designs.

[0059] 2. In the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0060] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A hydraulic cylinder with stable output, comprising: A hydraulic cylinder (1), wherein four positioning sleeves (101) are symmetrically welded at the top of the outer shell of the hydraulic cylinder (1); The invention is characterized in that a mounting plate (2) is fixed to the top of the piston rod of the hydraulic cylinder (1) by screw locking, and four positioning rod sleeves (201) are symmetrically welded to the outer circumference of the mounting plate (2), and four protective shaft rods (3) are inserted through the four positioning rod sleeves (201), and the four protective shaft rods (3) are slidably inserted and matched with the four positioning shaft sleeves (101); the four protective shaft rods (3) are arranged around the periphery of the piston rod of the hydraulic cylinder (1) to provide anti-collision protection for the piston rod; the top of the hydraulic cylinder (1) is slidably installed with four plug-in positioning members (205) arranged around it by spring pushing, and the four plug-in positioning members (205) are used to plug and position the four protective shaft rods (3).

2. A hydraulic cylinder with stable output according to claim 1, characterized in that: The plug-in positioning member (205) is composed as a whole of a bottom plug rod and an L-shaped push rod welded to the rear end of the plug rod, and the top horizontal part of the L-shaped push rod is located above the top end of the plug rod and is in the same direction and parallel to the plug rod.

3. A hydraulic cylinder with stable output according to claim 2, characterized in that: The head end portion of the insertion rod is inserted and matched with the top protruding portion of the protective shaft rod (3).

4. A hydraulic cylinder with stable output according to claim 3, characterized in that: Four groups of positioning ear blocks (204) are welded around the top of the installation plate (2), and each group of positioning ear blocks (204) comprises two positioning ear blocks (204) spaced apart inside and outside.

5. A hydraulic cylinder with stable output according to claim 4, characterized in that: The insertion rods at the four locations are pushed by springs to be inserted and matched with four groups of positioning ear blocks (204).

6. A hydraulic cylinder with stable output according to claim 1, characterized in that: Four vertical support shafts (202) are welded around the top of the installation plate (2) between the four groups of positioning ear blocks (204), and the tops of the four vertical support shafts (202) are welded with connecting plates (203).

7. A hydraulic cylinder with stable output according to claim 6, characterized in that: The connection plate (203) is used to be fixedly connected to an external force-bearing unit to transmit the telescopic driving force of the hydraulic cylinder (1).

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