Oil cylinder protection frame and oil cylinder protection structure for mini skid steer loader

Abstract

The utility model relates to an oil cylinder protection frame and an oil cylinder protection structure for a mini skid steer loader. The technical problem that an existing structure is complex and not easy to operate and use is solved. Comprising a protection frame body, a protection channel extending in the axial direction is formed in the protection frame body, an opening which extends from one end of the protection frame body to the other end of the protection frame body and is communicated with the protection channel is formed in one side of the protection frame body, a buffering assembly is arranged on the other side of the protection frame body, and an oil cylinder lug plate quick-release connecting assembly is arranged at one end of the protection frame body. The other end of the protection frame body is provided with a plug pin assembly with an open end and a closed end. The device has the advantages that the device is simple in structure and flexible to operate, the functions of supporting protection and prevention of pressure relief and falling of the movable arm oil cylinder can be achieved without disassembly, meanwhile, the device can be unfolded and folded through the plug pin assembly, and the operation safety can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of loader equipment, and in particular relates to an oil cylinder protection frame and an oil cylinder protection structure for a mini skid steer loader. Background Art

[0002] In recent years, with the continuous rise of labor costs in China, the application of mini skid steer loaders in loaders has become more and more extensive, and mini skid steer loaders have played an increasingly important role in replacing labor and improving production efficiency. In the existing technology, although the traditional boom can be operated without a cylinder protection frame when lifting, the safety cannot be effectively guaranteed when the cylinder is suddenly depressurized. During operation, the operator needs to pay attention to the safety problems caused by the falling of the cylinder, which brings great inconvenience to the operator. At the same time, the existing boom safety device has a complex structure, cumbersome installation, and is not easy to use.

[0003] In order to solve the deficiencies of the prior art, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a boom safety device for a wheeled loader [202022778131.6], which includes a mounting base, a first rotating shaft and a fixing bolt are mounted on the surface of the mounting base, a boom is mounted on one side of the mounting base, a boom hydraulic cylinder is mounted on the side of the mounting base where the boom is mounted, a fixing plate is mounted on the end of the boom away from the mounting base, a bucket is mounted on the side of the fixing plate away from the boom, and a push block is mounted below the boom.

[0004] The above solution solves the problem that the safety of sudden pressure relief of the existing oil cylinder cannot be guaranteed to a certain extent, but the solution still has many shortcomings, such as complex structure and difficult operation and use. Summary of the invention

[0005] The utility model aims to solve the above problems and provides a cylinder protection frame for a mini skid loader.

[0006] Another object of the utility model is to provide an oil cylinder protection structure in view of the above problem.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a cylinder protection frame for a mini skid loader, comprising a protection frame body, the protection frame body having an axially extending protection channel, one side of the protection frame body having an opening extending from one end of the protection frame body to the other end and connected to the protection channel, the other side of the protection frame body having a buffer assembly, one end of the protection frame body having a cylinder ear plate quick-release connection assembly, and the other end of the protection frame body having a latch assembly capable of closing one end of the opening. The protection frame body can be quickly installed through the protection channel and the opening, and the structure is simple and cost-saving. The cylinder ear plate quick-release connection assembly is adopted to make the protection frame body flexible to operate, and the latch assembly is used to fix the protection frame body.

[0008] In the above-mentioned oil cylinder protection frame for mini skid loader, the protection frame body includes two relatively parallel side plates, the opposite sides of the side plates are connected by a connecting plate, and the protection channel is formed between the two side plates and the connecting plate, and the opening is formed between the two sides of the side plates away from the connecting plate. The side plates and the connecting plate both play a protective role and also play a supporting role.

[0009] In the above-mentioned cylinder protection frame for a mini skid loader, the side plate and the connecting plate are connected as an integrated structure, the width of one end of the side plate close to the latch assembly is greater than the width of the other end, and the side plate has an inclined portion from one end close to the latch assembly to the other end inclined toward the connecting plate.

[0010] In the above-mentioned cylinder protection frame for a mini skid loader, the cylinder ear plate quick-release connection assembly includes connecting parts that are integrally formed on two side plates at one end away from the latch assembly and extend axially outward, and the connecting parts each have an arc-shaped arc-shaped connecting part.

[0011] In the above-mentioned oil cylinder protection frame for mini skid steer loader, the opening directions of the arc-shaped connecting parts at the ends of the two side plates are located on the same side, one of the two arc-shaped connecting parts is in a superior arc shape and the remaining arc-shaped connecting part is in a inferior arc shape. This makes it convenient to connect the protection frame body with the loader.

[0012] In the above-mentioned oil cylinder protection frame for mini skid steer loader, the buffer assembly includes a plurality of buffer pads arranged on the connecting plate, one end of the buffer pad protrudes outside the connecting plate and the other end penetrates the connecting plate and extends into the protection channel. The buffer pad can reduce the wear between the protection frame body and the loader and increase the service life.

[0013] In the above-mentioned oil cylinder protection frame for mini skid steer loader, the latch assembly includes a latch body which is inserted between the ends of the two side plates away from the arc-shaped connection part and close to the opening, and the latch body is arranged along the width direction of the opening. The latch member can prevent the protection frame body from separating from the loader, affecting the supporting effect, thereby posing a safety hazard.

[0014] In the above-mentioned oil cylinder protection frame for a mini skid steer loader, one end of the two side plates away from the arc-shaped connecting portion has a limiting groove.

[0015] A cylinder protection structure comprises a movably arranged boom, a boom cylinder is provided at the lower side of the boom, one end of the hydraulic rod of the boom cylinder has a cylinder ear plate movably connected to the boom through an axle pin, and is characterized in that a protection frame body is provided on the outer side of the boom or the boom cylinder, one end of the protection frame body is detachably connected to the pin shaft through a cylinder ear plate quick-release connection assembly, and the other end of the protection frame body is connected to the boom extension plate at the lower side of the boom through a latch assembly; or, the hydraulic rod of the boom cylinder is penetrated into a protection channel and the shell end of the boom cylinder abuts against the end of the protection frame body, and the other end of the protection frame body closes one open end through a latch assembly.

[0016] In the above-mentioned oil cylinder protection structure, the width of the protection frame body is smaller than the shell width of the boom oil cylinder, and one end of the protection frame body has a limiting groove that abuts against the shell end of the boom oil cylinder.

[0017] Compared with the existing technology, the advantages of the utility model are:

[0018] 1. The device has a simple structure and is flexible to operate. It can achieve support and protection without disassembly, and prevent the boom cylinder from falling due to pressure relief, taking into account both operability and safety.

[0019] 2. The device can be deployed and recovered through the latch assembly, which can effectively improve operational safety while taking into account the good versatility of the loader as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the utility model from another viewing angle.

[0022] Figure 3 It is a structural schematic diagram of the protection frame body of the utility model when the movable arm is supported.

[0023] Figure 4 It is a structural schematic diagram of the protective frame body of the utility model when the movable arm is retracted.

[0024] In the figure: a protection frame body 1, a protection channel 11, an opening 12, a side plate 13, a connecting plate 14, an inclined portion 15, a limiting groove 16, a buffer assembly 2, a buffer pad 21, a cylinder ear plate quick-release connecting assembly 3, a connecting portion 31, an arc-shaped connecting portion 32, a latch assembly 4, a latch body 41, a boom 5, a boom cylinder 51, a hydraulic rod 52, a cylinder ear plate 53, a boom extension plate 54, and an axle pin 55. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] like Figure 1-4 As shown, a cylinder protection frame for a mini skid loader includes a protection frame body 1, an axially extending protection channel 11 is provided in the protection frame body 1, one side of the protection frame body 1 has an opening 12 extending from one end of the protection frame body 1 to the other end and communicating with the protection channel 11, a buffer assembly 2 is provided on the other side of the protection frame body 1, a cylinder ear plate quick-release connection assembly 3 is provided at one end of the protection frame body 1, and a latch assembly 4 that can close one end of the opening 12 is provided at the other end of the protection frame body 1. The protection frame body 1 can be quickly installed through the protection channel 11 and the opening 12, and the structure is simple and cost-saving. The cylinder ear plate quick-release connection assembly 3 is adopted to make the protection frame body 1 flexible to operate, and the latch assembly 4 is used to fix the protection frame body 1.

[0027] like Figure 1 As shown, the protection frame body 1 includes two relatively parallel side plates 13, opposite sides of the side plates 13 are connected by a connecting plate 14, and the protection channel 11 is formed between the two side plates 13 and the connecting plate 14, and the opening 12 is formed between the two sides of the side plates 13 away from the connecting plate 14. The side plates 13 and the connecting plate 14 both play a protective role and also play a supporting role.

[0028] The side plate 13 and the connecting plate 14 are connected as an integrated structure, the width of one end of the side plate 13 close to the latch assembly 4 is greater than the width of the other end, and the side plate 13 has an inclined portion 15 inclined toward the connecting plate 14 from one end close to the latch assembly 4 to the other end.

[0029] Specifically, the cylinder ear plate quick-release connection assembly 3 includes connection parts 31 which are integrally formed at one end of the two side plates 13 away from the latch assembly 4 and extend axially outward, and the connection parts 31 are respectively provided with arc-shaped arc-shaped connection parts 32.

[0030] Furthermore, the opening directions of the arc-shaped connecting parts 32 at the ends of the two side plates 13 are located on the same side, one of the two arc-shaped connecting parts 32 is in a major arc shape and the remaining arc-shaped connecting part 32 is in a minor arc shape. This facilitates the connection of the protection frame body 1 with the loader.

[0031] Furthermore, the buffer assembly 2 includes a plurality of buffer pads 21 disposed on the connecting plate 14, one end of the buffer pad 21 protrudes outside the connecting plate 14 and the other end penetrates the connecting plate 14 and extends into the protection channel 11. The buffer pad 21 can reduce the wear between the protection frame body 1 and the loader and increase the service life.

[0032] Combination Figure 1 and Figure 2 As shown, the latch assembly 4 includes a latch body 41 that penetrates between the two side plates 13 at one end away from the arc-shaped connecting portion 32 and close to the side of the opening 12, and the latch body 41 is arranged along the width direction of the opening 12. The latch member 41 can prevent the protection frame body 1 from separating from the loader, affecting the supporting effect, thereby posing a safety hazard.

[0033] The two side plates 13 have a limiting groove 16 at one end away from the arc-shaped connecting portion 32 .

[0034] Combination Figure 3 and Figure 4 As shown, a cylinder protection structure comprises a movably arranged boom 5, a boom cylinder 51 is provided at the lower side of the boom 5, one end of the hydraulic rod 52 of the boom cylinder 51 has a cylinder ear plate 53 movably connected to the boom 5 through an axle pin 55, a protection frame body 1 is provided on the outer side of the boom 5 or the boom cylinder 51, one end of the protection frame body 1 is detachably connected to the pin shaft through a cylinder ear plate quick-release connection assembly 3, and the other end of the protection frame body 1 is connected to a boom extension plate 54 at the lower side of the boom 5 through a latch assembly 4; or, the hydraulic rod 52 of the boom cylinder 51 is penetrated into the protection channel 11 and the shell end of the boom cylinder 51 is abutted against the end of the protection frame body 1, and the other end of the protection frame body 1 closes one end of the opening 12 through the latch assembly 4.

[0035] The width of the protection frame body 1 is smaller than the shell width of the boom cylinder 51 , and one end of the protection frame body 1 has a limiting groove 16 that abuts against the shell end of the boom cylinder 51 .

[0036] The principle of this embodiment is:

[0037] When the boom 5 is supported, the protection frame body 1 is installed on the outside of the hydraulic rod 52. The protection frame body 1 is connected to the cylinder ear plate 53 through the arc-shaped connecting part 32. After the hydraulic rod 52 enters the protection channel 11 from the opening 12, the opening 12 is closed by the latch body 41 to reduce the loosening of the protection frame body 1. At the same time, the limiting groove 16 of the protection frame body 1 contacts the end of the boom cylinder 51 close to the hydraulic rod 52, which plays a supporting role to prevent the boom cylinder 51 from unloading and falling and causing danger; when the boom 5 is retracted, the latch body 41 is removed, the protection frame body 1 is aligned with the boom extension plate 54, and then the latch body 41 is used to fix the protection frame body 1 with the boom extension plate 54 to facilitate the retraction of the boom 5.

[0038] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0039] Although the present invention uses more terms such as protection frame body 1, protection channel 11, opening 12, side plate 13, connecting plate 14, inclined portion 15, limiting groove 16, buffer assembly 2, buffer pad 21, cylinder ear plate quick-release connecting assembly 3, connecting portion 31, arc-shaped connecting portion 32, latch assembly 4, latch body 41, boom 5, boom cylinder 51, hydraulic rod 52, cylinder ear plate 53, boom extension plate 54, shaft pin 55, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A cylinder protection frame for a mini skid loader, comprising a protection frame body (1), characterized in that: The protection frame body (1) has an axially extending protection channel (11) therein, one side of the protection frame body (1) has an opening (12) extending from one end of the protection frame body (1) to the other end and communicating with the protection channel (11), the other side of the protection frame body (1) is provided with a buffer assembly (2), one end of the protection frame body (1) is provided with a cylinder ear plate quick-release connection assembly (3), and the other end of the protection frame body (1) is provided with a latch assembly (4) capable of closing one end of the opening (12).

2. The oil cylinder protection frame for a mini skid loader according to claim 1, characterized in that: The protection frame body (1) comprises two side plates (13) arranged relatively parallel to each other, the opposite sides of the side plates (13) are connected via a connecting plate (14), the protection channel (11) is formed between the two side plates (13) and the connecting plate (14), and the opening (12) is formed between the two side plates (13) on the side away from the connecting plate (14).

3. The oil cylinder protection frame for a mini skid loader according to claim 2, characterized in that: The side plate (13) and the connecting plate (14) are connected to form an integrated structure, the width of one end of the side plate (13) close to the latch assembly (4) is greater than the width of the other end, and the side plate (13) has an inclined portion (15) arranged obliquely toward the connecting plate (14) from one end close to the latch assembly (4) to the other end.

4. The oil cylinder protection frame for a mini skid loader according to claim 2 or 3, characterized in that: The cylinder ear plate quick-release connection assembly (3) comprises connection parts (31) which are integrally formed on one end of the two side plates (13) away from the latch assembly (4) and extend axially outward, and the connection parts (31) are respectively provided with arc-shaped arc-shaped connection parts (32).

5. The oil cylinder protection frame for a mini skid loader according to claim 4, characterized in that: The opening directions of the arc-shaped connecting portions (32) at the ends of the two side plates (13) are located on the same side, one of the two arc-shaped connecting portions (32) is in a major arc shape and the remaining arc-shaped connecting portion (32) is in a minor arc shape.

6. The oil cylinder protection frame for a mini skid loader according to claim 4, characterized in that: The buffer assembly (2) comprises a plurality of buffer pads (21) arranged on the connecting plate (14), wherein one end of the buffer pad (21) protrudes from the outside of the connecting plate (14) and the other end penetrates the connecting plate (14) and extends into the protection channel (11).

7. The oil cylinder protection frame for a mini skid loader according to claim 4, characterized in that: The latch assembly (4) comprises a latch body (41) which is inserted between the ends of the two side plates (13) away from the arc-shaped connecting portion (32) and close to the side of the opening (12), and the latch body (41) is arranged along the width direction of the opening (12).

8. The oil cylinder protection frame for a mini skid loader according to claim 4, characterized in that: The two side plates (13) have a limiting groove (16) at one end away from the arc-shaped connecting portion (32).

9. A cylinder protection structure of a cylinder protection frame for a mini skid loader using any one of claims 1 to 8, comprising a movable boom (5), a boom cylinder (51) being provided at the lower side of the boom (5), and a cylinder ear plate (53) being movably connected to the boom (5) through an axle pin (55) at one end of a hydraulic rod (52) of the boom cylinder (51), wherein: A protection frame body (1) is provided on the outside of the boom (5) or boom cylinder (51); one end of the protection frame body (1) is detachably connected to a pin shaft via a cylinder ear plate quick-release connection assembly (3); the other end of the protection frame body (1) is connected to a boom extension plate (54) at the lower side of the boom (5) via a latch assembly (4); or, the hydraulic rod (52) of the boom cylinder (51) is inserted into the protection channel (11) and the shell end of the boom cylinder (51) abuts against the end of the protection frame body (1); the other end of the protection frame body (1) closes one end of the opening (12) via the latch assembly (4).

10. The oil cylinder protection structure according to claim 9, characterized in that: The width of the protection frame body (1) is smaller than the shell width of the boom cylinder (51), and one end of the protection frame body (1) has a limiting groove (16) that abuts against the shell end of the boom cylinder (51).

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