Hydraulic arm protection device

Abstract

The present invention provides a hydraulic arm protection device, comprising a cylinder, a top cover and an end cover located at both ends of the cylinder; the top cover is fixedly connected to the top of the hydraulic arm; the end cover is located at the oil cylinder; an open groove is provided on the cylinder along the length direction of the cylinder, and protective rubber strips are provided on both sides of the open groove; the hydraulic oil hose connector of the hydraulic arm is located at the open groove; a groove is provided on the edge of the end cover, and a sealing rubber strip is provided in the groove, and the sealing rubber strip is close to the hydraulic arm. The protection device is sleeved on the outside of the hydraulic arm, which can isolate the hydraulic arm from the outside, prevent the hydraulic arm from being damaged by the outside, and protect the hydraulic arm in real time. The hydraulic arm protection device is made of steel material, has a strong protection ability, and there is a certain distance between the inner wall and the hydraulic arm, which can have a certain buffer space for collision with external objects, and effectively avoid the harmfulness of collision. The hydraulic arm protection device provided by the present application is easy to disassemble and will not cause difficulties in the maintenance of the hydraulic arm and the oil cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of ships, and in particular to a hydraulic arm protection device. Background Art

[0002] Most handysize bulk carriers are equipped with foldable hatch covers for easy loading of cargo. When loading cargo, the foldable hatch covers are opened or closed by inputting / outputting hydraulic oil into / from the hydraulic cylinder through the motor to push the hydraulic arm.

[0003] During the operation of the hydraulic cylinder, the hydraulic arm is directly exposed to the outside and is easily hit by the cargo or equipment being transported, which may damage the hydraulic arm. In addition, the exposed hydraulic arm is stained with fine particles of debris due to the hydraulic oil on the surface, especially when the ship is carrying granular cargo such as grain and ore. When the hydraulic oil is input into the hydraulic cylinder, the attached fine particles of debris are easy to enter the hydraulic oil, thereby contaminating the hydraulic oil, causing scratches on the hydraulic arm, and in severe cases, causing oil leakage.

[0004] In order to prevent small particles from entering the hydraulic oil, a protective cloth is usually wrapped around the hydraulic arm when it stops working. However, this requires repeated operations according to the opening and closing of the folding hatch cover, which is time-consuming and laborious. Summary of the invention

[0005] The invention provides a hydraulic arm protection device to solve the problem that the hydraulic oil is easily contaminated when the existing hydraulic arm is working.

[0006] The present invention provides a hydraulic arm protection device, comprising a cylinder arranged outside the hydraulic arm and a top cover and an end cover located at both ends of the cylinder; the top cover is fixedly connected to the top of the hydraulic arm; the end cover is located at the oil cylinder and moves freely with the movement of the hydraulic arm;

[0007] An open groove is provided on the cylinder along the length direction of the cylinder, and protective rubber strips are provided on both sides of the open groove; the hydraulic oil hose connector of the hydraulic arm is located at the open groove;

[0008] A groove is arranged on the edge of the end cover, a sealing strip is arranged in the groove, and the sealing strip is close to the hydraulic arm.

[0009] Preferably, the cylinder comprises a first half cylinder and a second half cylinder, and the first half cylinder and the second half cylinder are buckled on the outside of the hydraulic arm.

[0010] Preferably, the first half cylinder is provided with a first opening groove, the second half cylinder is provided with a second opening groove, and the first opening groove and the second opening groove constitute the opening groove.

[0011] Preferably, the end cover comprises a first semicircular ring and a second semicircular ring, and the first semicircular ring and the second semicircular ring are bolted together.

[0012] Preferably, the length of the open slot is greater than the sum of the maximum extended length of the hydraulic arm and the diameter of the hydraulic oil hose connector.

[0013] Preferably, the width of the open groove is greater than the diameter of the hydraulic oil hose connector.

[0014] Preferably, the protective rubber strip is fixed at the opening groove by rivets.

[0015] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0016] The present invention provides a hydraulic arm protection device, comprising a cylinder arranged on the outside of the hydraulic arm and a top cover and an end cover located at both ends of the cylinder; the top cover is fixedly connected to the top of the hydraulic arm; the end cover is located at the oil cylinder and moves freely with the movement of the hydraulic arm; along the length direction of the cylinder, the cylinder is provided with an open groove, and protective rubber strips are respectively provided on both sides of the open groove; the hydraulic oil hose connector of the hydraulic arm is located at the open groove; a groove is provided on the edge of the end cover, and a sealing rubber strip is provided in the groove, and the sealing rubber strip is close to the hydraulic arm. The hydraulic arm protection device provided by the present application is sleeved on the outside of the hydraulic arm, and can ensure that the hydraulic arm is isolated from the outside without hindering the normal operation of the hydraulic arm, so as to avoid the hydraulic arm from being damaged by the outside and protect the hydraulic arm in real time. The hydraulic arm protection device is made of steel material, has a strong protection ability, and there is a certain distance between the inner wall and the hydraulic arm, which can have a certain buffer space for the collision of external objects and effectively avoid the collision hazards. The hydraulic arm protection device provided by the present application is easy to disassemble and will not cause difficulties in the maintenance of the hydraulic arm and the oil cylinder.

[0017] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A cross-sectional view of a hydraulic arm protection device provided by an embodiment of the present invention;

[0020] Figure 2 for Figure 1 Sectional view in the AA direction;

[0021] Figure 3 A diagram showing an application scenario in which the hydraulic arm protection device provided by an embodiment of the present invention is assembled on a hydraulic arm;

[0022] Figure 4 A schematic diagram of the structure of a top end cover provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the structure of the end cover provided by an embodiment of the present invention;

[0024] Symbols represent:

[0025] 1- hydraulic arm, 2- cylinder, 3- top cover, 4- end cover, 5- oil cylinder, 6- opening groove, 7- protective rubber strip, 8- hydraulic oil hose connector, 9- groove, 10- sealing rubber strip, 11- rivet;

[0026] 201 - first half cylinder, 202 - second half cylinder; 401 - first semicircular ring, 402 - second semicircular ring; 601 - first open groove, 602 - second open groove. DETAILED DESCRIPTION

[0027] Please refer to the attached Figure 1-3 , among which, Figure 1 A cross-sectional view of a hydraulic arm protection device provided in an embodiment of the present application is shown, Figure 1 Shows Figure 1 Sectional view along the AA direction, attached Figure 3 The following figure shows the application scenario of the hydraulic arm protection device installed on the hydraulic arm. Figure 1-3 It can be seen that the hydraulic arm protection device provided in the embodiment of the present application includes a cylinder 2 arranged on the outside of the hydraulic arm 1, and the two ends of the cylinder 2 are respectively provided with a top cover 3 and an end cover 4. The cylinder 2 is the main body of the protection device, which is arranged on the outside of the hydraulic arm 1 and can move with the movement of the hydraulic arm 1.

[0028] Specifically, the cylinder 2 is a cylindrical structure, which is sleeved on the outside of the hydraulic arm 1. The top cover 3 is a component arranged on the top of the cylinder 2, as shown in the attached Figure 4 As shown, it is fixedly connected to the cylinder 2 by welding. To facilitate assembly with the cylinder 2 and the hydraulic arm 1, the top cover 3 has a circular shape and a hollow groove in the center. The hollow groove structure matches the top structure of the hydraulic arm 1, so that the top cover 3 is fixedly connected to the top of the hydraulic arm 1 by screws to achieve sealing of the top of the hydraulic arm 1. Since the top cover 3 is fixedly connected to the top of the hydraulic arm 1 and the top cover 3 is welded to the cylinder 2, when the hydraulic arm 1 is extended or contracted, the top cover 3 can drive the cylinder 2 to extend or contract with the hydraulic arm 1.

[0029] The end cap 4 is a component arranged at the bottom end of the cylinder 2. Figure 5As shown, it is fixedly connected to the cylinder 2 by welding. To facilitate assembly with the cylinder 2 and the hydraulic arm 1, the end cover 4 is a circular ring structure. In the embodiment of the present application, the end cover 4 is located at the oil cylinder 5 and can move freely with the movement of the hydraulic arm 1. A groove 9 is provided on the edge of the end cover 4, and a sealing strip 10 is arranged in the groove 9, and the sealing strip 10 is close to the hydraulic arm 1. Therefore, although the end cover 4 is not sealed and fixed to the bottom end of the hydraulic arm 1, due to the elastic support of the sealing strip 10, the end cover 4 will not touch the hydraulic arm 1, and thus will not damage the hydraulic arm 1. In addition, since the sealing strip 10 is close to the hydraulic arm 1, under the sealing action of the sealing strip 10, the end of the hydraulic arm 1 is in an elastic sealing state, and thus fine particles of debris will not enter from the end of the hydraulic arm 1, playing a role of isolation and protection.

[0030] An open groove 6 is provided on the cylinder 2 along the length direction of the cylinder 2, and the open groove 6 is used to place the hydraulic oil hose connector 8, so that the cylinder 1 will not be blocked by the hydraulic oil hose connector 8 and cannot move with the hydraulic arm 1. Based on this, the length of the open groove 6 in the embodiment of the present application is greater than the sum of the maximum extension length of the hydraulic arm 1 and the diameter of the hydraulic oil hose connector 8, and the width is greater than the diameter of the hydraulic oil hose connector 8. In order to prevent fine particles of debris from falling from the open groove 6 to the hydraulic arm 1, protective rubber strips 7 are respectively provided on both sides of the open groove 6. The protective rubber strips 7 are elastic and can prevent fine particles of debris from falling from the open groove 6 to the inside of the cylinder 1 without blocking the hydraulic oil hose connector 8. Preferably, the protective rubber strip 7 is fixed to the open groove 6 by rivets 11.

[0031] In the embodiment of the present application, the top of the hydraulic arm 1 is sealed by the top cover 3, the middle is sealed by the cylinder 2 and the protective rubber strip 7, and the bottom is sealed by the end cover 4 and the sealing rubber strip 10. As a result, the hydraulic arm 1 is in a sealed state as a whole, which can effectively prevent foreign objects from entering the protective device, and effectively isolate the hydraulic arm 1 from the outside world, reflecting the protective effect of the protective device provided by the embodiment of the present application. Since the cylinder 2 and the hydraulic arm 1 have a certain space, and the sealing rubber strip 10 is an elastic component, the protective device provided by the embodiment of the present application has a certain buffer space for the collision of foreign objects, effectively avoiding the harmfulness of the collision. In addition, the top cover 3 is fixedly sealed with the top of the hydraulic arm 1, and the end cover 4 can move with the movement of the hydraulic arm 1, playing a role in real-time protection of the hydraulic arm 1.

[0032] Further, in order to facilitate the inspection and maintenance of the hydraulic arm 1 and the oil cylinder 5, the protective device provided in the embodiment of the present application needs to be easy to assemble and disassemble. Based on this, the cylinder 2, the top cover 3 and the end cover 4 in the embodiment of the present application are all detachable parts. Specifically, the cylinder 2 includes a first half cylinder 201 and a second half cylinder 202, and the first half cylinder 201 and the second half cylinder 202 are buckled on the outside of the hydraulic arm 1 to form a cylindrical cylinder 2. More preferably, the first half cylinder 201 and the second half cylinder 202 are detachably connected by bolts. A first opening groove 601 is provided on the first half cylinder 201, and a second opening groove 602 is provided on the second half cylinder 202. When the first half cylinder 201 and the second half cylinder 202 are buckled, the first opening groove 601 and the second opening groove 602 constitute an opening groove 6.

[0033] Based on the cylinder 2 structure composed of the first half cylinder 201 and the second half cylinder 202, the top cover 3 is also a semicircular structure. The top covers 3 of the two parts are respectively welded to the first half cylinder 201 and the second half cylinder 202, and then fixedly connected to the top of the hydraulic arm 1 by screws. The end cover 4 is also a two-part structure, that is, the end cover 4 includes a first semicircular ring 401 and a second semicircular ring 402, and the first semicircular ring 401 and the second semicircular ring 402 are connected by bolts.

[0034] In order to facilitate assembly and maintenance of the hydraulic oil hose connector 8, the groove 9 is also provided in two parts, that is, the first semicircular ring 401 and the second semicircular ring 402 are respectively provided with semicircular grooves. After the first semicircular ring 401 and the second semicircular ring 402 are connected, the two semicircular grooves form the groove 9. During assembly, after the sealing strip 10 is respectively installed in the grooves on the first semicircular ring 401 and the second semicircular ring 402, the first semicircular ring 401 and the second semicircular ring 402 are fastened by bolts, and the tightness of the bolts is also adjusted to ensure the sealing and sliding flexibility of the sealing strip 10.

[0035] The hydraulic arm protection device provided in the embodiment of the present application is sleeved on the outside of the hydraulic arm 1. While not hindering the normal operation of the hydraulic arm 1, it can ensure that the hydraulic arm 1 is isolated from the outside, prevent the hydraulic arm 1 from being damaged by the outside, and protect the hydraulic arm 1 in real time. The hydraulic arm protection device is made of steel material, has a strong protection ability, and there is a certain distance between the inner wall and the hydraulic arm 1, which can provide a certain buffer space for the collision of external objects, effectively avoiding the harm of the collision. The hydraulic arm protection device provided in the embodiment of the present application is easy to disassemble and will not cause difficulties in the maintenance of the hydraulic arm 1 and the oil cylinder 5.

[0036] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure of the invention herein. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0037] It should be understood that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A hydraulic arm protection device, characterized in that: It comprises a cylinder (2) arranged outside a hydraulic arm (1) and a top cover (3) and an end cover (4) located at both ends of the cylinder (2); the top cover (3) is fixedly connected to the top of the hydraulic arm (1); the end cover (4) is located at the oil cylinder (5) and moves freely with the movement of the hydraulic arm (1); An opening groove (6) is provided on the cylinder (2) along the length direction of the cylinder (2), and protective rubber strips (7) are respectively provided on both sides of the opening groove (6); a hydraulic oil hose connector (8) of the hydraulic arm (1) is located at the opening groove (6); A groove (9) is provided on the edge of the end cover (4), a sealing strip (10) is arranged in the groove (9), and the sealing strip (10) is close to the hydraulic arm (1).

2. The hydraulic arm protection device according to claim 1, characterized in that: The cylinder (2) comprises a first half cylinder (201) and a second half cylinder (202), wherein the first half cylinder (201) and the second half cylinder (202) are buckled onto the outside of the hydraulic arm (1).

3. The hydraulic arm protection device according to claim 2, characterized in that: The first half cylinder (201) is provided with a first opening groove (601), and the second half cylinder (202) is provided with a second opening groove (602), and the first opening groove (601) and the second opening groove (602) constitute the opening groove (6).

4. The hydraulic arm protection device according to claim 2, characterized in that: The end cover (4) comprises a first semicircular ring (401) and a second semicircular ring (402), and the first semicircular ring (401) and the second semicircular ring (402) are bolted together.

5. The hydraulic arm protection device according to claim 1, characterized in that: The length of the opening groove (6) is greater than the sum of the maximum extended length of the hydraulic arm (1) and the diameter of the hydraulic oil hose connector (8).

6. The hydraulic arm protection device according to claim 1, characterized in that: The width of the opening groove (6) is greater than the diameter of the hydraulic oil hose connector (8).

7. The hydraulic arm protection device according to claim 1, characterized in that: The protective rubber strip (7) is fixed to the opening groove (6) by means of rivets (11).

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