Grease filling mechanism for crane jib

Abstract

The application relates to a grease filling mechanism of a crane boom, which comprises an outer boom and an inner boom, the inner boom is movably arranged in the inner wall of the outer boom, sliding blocks are fixedly arranged on the outer walls of the inner boom, grease storage cavities are arranged in the sliding blocks, the sliding blocks are slidably connected with the inner wall of the outer boom, a filling mechanism is movably arranged on the top of the sliding block, and a feeding mechanism for uniformly coating the inner wall of the outer boom is arranged on the bottom of the sliding block; when the sliding block slides on the inner wall of the outer boom, a small amount of air enters the grease storage cavities through the L-shaped pipes, so that the liquid grease in the grease storage cavities slowly drops on the cloth cover through the discharge pipes and the spray heads; in the rolling process of the cloth cover on the inner wall of the outer boom, the cloth cover uniformly coats the liquid grease on the inner wall of the outer boom; the liquid grease is cooled to form a paste on the sliding path of the sliding block, thereby protecting the edges of the sliding block and ensuring the protection efficiency of the sliding block.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of crane jibs, in particular to a lubricating grease filling mechanism for a crane jib. BACKGROUND

[0002] With the rapid development of crane technology, the wear of a sliding block in a jib as a main structural member seriously affects the working efficiency, when the sliding block needs to be filled with lubricating grease, the jib is usually disassembled, and the lubricating grease is applied to the surface of the sliding block, which is time-consuming and laborious and low in working efficiency, so a scheme needs to be provided to solve the technical problems;

[0003] According to the patent file with the publication number CN218032591U, the filling mechanism can quickly fill the lubricating grease into the sliding block in the jib, without disassembling the jib, thereby improving the working efficiency, and the smearing mechanism can guide the lubricating grease filled into the sliding block, so that the lubricating grease is applied to the surface of the sliding block, thereby reducing the friction between the sliding block and the inner wall of the outer jib, and prolonging the service life of the sliding block;

[0004] However, the device only applies the lubricating grease to the side of the sliding block close to the outer jib, and does not apply the lubricating grease to the inner wall of the outer jib on the sliding path of the sliding block, so that the edge of the sliding block is worn, affecting the efficiency of protecting the sliding block; meanwhile, the amount of lubricating grease guided out of the device cannot be controlled, and the excess lubricating grease cannot be recycled in time, which easily causes the waste of lubricating grease. SUMMARY

[0005] The technical problems solved by the present application are:

[0006] (1) How to solve the problem that the lubricating grease is not applied to the inner wall of the outer jib on the sliding path of the sliding block, so that the edge of the sliding block is worn, affecting the efficiency of protecting the sliding block;

[0007] (2) How to solve the problem that the excess lubricating grease guided out cannot be recycled in time, which easily causes the waste of lubricating grease.

[0008] The purpose of the present application can be achieved by the following technical scheme: a lubricating grease filling mechanism for a crane jib, comprising an outer jib and an inner jib, the inner jib is movably arranged in the inner part of the outer jib, sliding blocks are fixedly installed on the outer walls of the two sides of the inner jib, a grease storage cavity is formed in the inner part of each sliding block, the two sliding blocks are slidably connected with the inner wall of the outer jib, an injection mechanism for adding lubricating grease to the grease storage cavity is movably arranged on the top of the sliding block, and a feeding mechanism for uniformly applying the lubricating grease to the inner wall of the outer jib is arranged on the bottom of the sliding block.

[0009] The feeding mechanism comprises a lifting rod movably inserted into the bottom of the sliding block, the bottom of the lifting rod is provided with a roller through a mounting frame, a cloth sleeve is fixedly arranged on the outer wall of the roller, and the cloth sleeve is attached to the inner wall of the outer lifting arm.

[0010] Further technical improvements of the present application are that the inner part of the lifting rod is fixedly embedded with a discharging pipe, the output end of the discharging pipe extends out of the lifting rod and is fixedly installed with a spray head, the spray head is located above the cloth sleeve, and the input end of the discharging pipe is located at the bottom of the grease storage cavity.

[0011] Further technical improvements of the present application are that the feeding mechanism comprises a feeding pipe movably inserted into the top of the sliding block, the bottom end of the feeding pipe is fixedly connected with the top end of the lifting rod, a discharging hole is further formed in the side wall of the bottom of the feeding pipe, the top end of the feeding pipe movably penetrates the outer lifting arm and is fixedly provided with a sealing plug.

[0012] Further technical improvements of the present application are that the middle part of the feeding pipe is fixedly installed with a baffle, the baffle is in contact with the inner wall of the outer lifting arm, and a push spring is elastically arranged between the baffle and the sliding block.

[0013] Further technical improvements of the present application are that the side surface of the sliding block facing the outer lifting arm is provided with a groove, the groove is fixedly inserted with an L-shaped pipe, and the input end of the L-shaped pipe is located in the middle part of the grease storage cavity.

[0014] Further technical improvements of the present application are that the top of the sliding block is further fixedly provided with a skin bag, the bottom of the skin bag is communicated with a connecting pipe, one end of the connecting pipe extends into the grease storage cavity, and the inner wall bottom of the sliding block is further fixedly installed with an electric heating plate for melting the lubricating grease.

[0015] Compared with the prior art, the application has the following advantages:

[0016] In use, when the sliding block slides on the inner wall of the outer boom, a small amount of air enters the grease storage cavity through the L-shaped pipe, so that the liquid lubricating grease in the grease storage cavity slowly drips onto the cloth cover along with the discharge pipe and the spray head. During the rolling of the cloth cover on the inner wall of the outer boom, the cloth cover evenly applies the liquid lubricating grease to the inner wall of the outer boom. The liquid lubricating grease is cooled to form a paste on the sliding path of the sliding block, thereby providing protection to the edge of the sliding block and ensuring the protection efficiency of the sliding block.

[0017] In use, the inner boom is controlled to contract to a set length and then immediately extend to the longest length. By extruding the skin sac again, the gas inside the skin sac enters the grease storage cavity. A small amount of liquid lubricating grease enters the discharge pipe when the input end of the discharge pipe is located below the sliding block again. At this time, the liquid lubricating grease in the grease storage cavity is injected into the groove through the L-shaped pipe. Part of the liquid lubricating grease in the groove is cooled to form a paste when it contacts the outer boom, thereby forming protection between the sliding block and the outer boom and reducing the wear of the sliding block. By controlling the inner boom to contract to the shortest length, the skin sac is restored to its original state again during this process. The L-shaped pipe is used to recover the excess lubricating grease in the groove, thereby avoiding waste. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the application will be further described below with reference to the accompanying drawings.

[0019] Figure 1 is a sectional view of the overall structure of the application;

[0020] Figure 2 is a sectional view of the structure of the sliding block of the application;

[0021] Figure 3 is a sectional view of the structure of the sliding block of the application; Figure 2 is an enlarged view of the structure at A in the application;

[0022] Figure 4 is a schematic view of the injection mechanism structure of the application;

[0023] Figure 5 is a schematic view of the structure of the sliding block of the application.

[0024] In the drawings: 1, outer boom; 2, sliding block; 3, inner boom; 4, injection mechanism; 5, L-shaped pipe; 6, feeding mechanism; 7, connecting pipe; 8, skin sac; 9, groove; 401, feeding pipe; 402, discharge hole; 403, thrust spring; 404, baffle; 405, sealing plug; 601, spray head; 602, roller; 603, lifting rod; 604, discharge pipe. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be described clearly and completely below in combination with the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0026] Please refer to Figures 1-5 As shown in the figure, a grease filling mechanism of a crane jib includes an outer jib 1 and an inner jib 3, the inner jib 3 is movably arranged inside the outer jib 1, a sliding block 2 is fixedly installed on the outer wall of each side of the inner jib 3, a grease storage cavity is formed in the inner jib 2, the two sliding blocks 2 are in sliding connection with the inner wall of the outer jib 1, a filling mechanism 4 for adding grease to the grease storage cavity is movably arranged on the top of the sliding block 2, and a feeding mechanism 6 for uniformly coating the inner wall of the outer jib 1 is arranged at the bottom of the sliding block 2.

[0027] Please refer to Figure 2 and Figure 3 As shown in the figure, the feeding mechanism 6 includes a lifting rod 603 movably inserted at the bottom of the sliding block 2, a roller 602 is rotatably arranged on the bottom of the lifting rod 603 through a mounting frame, a cloth sleeve is fixedly sleeved on the outer wall of the roller 602, and the cloth sleeve is in contact with the inner wall of the outer jib 1.

[0028] Please refer to Figure 3 As shown in the figure, the lifting rod 603 is fixedly embedded with a discharging pipe 604, the output end of the discharging pipe 604 extends out of the lifting rod 603, a spray head 601 is fixedly installed, the spray head 601 is located above the cloth sleeve, and the input end of the discharging pipe 604 is located at the bottom of the grease storage cavity; when the sliding block 2 slides on the inner wall of the outer jib 1, a small amount of air enters the grease storage cavity through the L-shaped pipe 5, so that the liquid grease in the grease storage cavity slowly drips onto the cloth sleeve through the discharging pipe 604 and the spray head 601. In the process of rolling the cloth sleeve on the inner wall of the outer jib 1, the cloth sleeve uniformly coats the liquid grease on the inner wall of the outer jib 1, and the liquid grease is cooled to form a paste on the sliding path of the sliding block 2, thereby protecting the edge of the sliding block 2 and ensuring the protection efficiency of the sliding block 2.

[0029] Please refer to Figure 2 and Figure 4 As shown in the figure, the filling mechanism 4 includes a feeding pipe 401 movably inserted at the top of the sliding block 2, the bottom end of the feeding pipe 401 is fixedly connected with the top end of the lifting rod 603, a discharging hole 402 is further formed in the side wall of the bottom of the feeding pipe 401, the top end of the feeding pipe 401 movably penetrates the outer jib 1, and a sealing plug 405 is fixedly arranged.

[0030] Please refer to Figure 4As shown, the middle of the feed pipe 401 is fixedly provided with a baffle 404, the baffle 404 is in contact with the inner wall of the outer boom 1, and the baffle 404 and the sliding block 2 are elastically provided with a thrust spring 403; the inner boom 3 is controlled to be retracted to a set length and then immediately elongated to the longest, by extruding the bladder 8 again, so that the gas inside enters the grease storage cavity, first a small amount of liquid lubricating grease enters the discharge pipe 604, when the input end of the discharge pipe 604 is located below the sliding block 2 again, the liquid lubricating grease in the grease storage cavity will not enter the discharge pipe 604, but at this time the liquid lubricating grease in the grease storage cavity will be injected into the groove 9 through the L-shaped pipe 5, part of the liquid lubricating grease in the groove 9 will be formed into paste when contacting the outer boom 1, and a protection is formed between the sliding block 2 and the outer boom 1, reducing the wear of the sliding block 2, by controlling the inner boom 3 to be retracted to the shortest, in the process, the bladder 8 is restored again, the excess lubricating grease in the groove 9 is collected back through the L-shaped pipe 5, avoiding waste.

[0031] Please refer to Figure 2 and Figure 5 As shown, the side of the sliding block 2 facing the outer boom 1 is provided with a groove 9, the groove 9 is fixedly provided with an L-shaped pipe 5, and the input end of the L-shaped pipe 5 is located in the middle of the grease storage cavity.

[0032] Please refer to Figure 2 As shown, the top of the sliding block 2 is also fixedly provided with a bladder 8, the bottom of the bladder 8 is communicated with a connecting pipe 7, one end of the connecting pipe 7 extends into the grease storage cavity, and the inner wall bottom of the sliding block 2 is also fixedly provided with an electric heating plate for melting lubricating grease.

[0033] Working principle: in use, first, when the inner boom 3 is elongated to the longest, the sliding block 2 cooperates with the outer boom 1 to provide extrusion to the skin bag 8, the baffle 404 provides limiting to the feeding pipe 401, so that the lifting rod 603 slides downwards relative to the sliding block 2, the input end of the discharging pipe 604 is below the sliding block 2, the sealing plug 405 and the electric heating plate are opened, the lubricating grease is injected into the feeding pipe 401 through the external injection device, the lubricating grease is injected into the grease storage cavity through the discharging hole 402, the lubricating grease in the grease storage cavity is melted into liquid state through the electric heating plate, when the amount of the liquid lubricating grease reaches half of the capacity of the grease storage cavity, the external injection device stops injection, at this time, the liquid lubricating grease liquid level will overflow the one end of the connecting pipe 7 in the grease storage cavity, the sealing plug 405 is closed in time, and the inner boom 3 is controlled to contract to the set length, at this time, the skin bag 8 restores to the original state, in the process, air is sucked into the grease storage cavity through the L-shaped pipe 5 and the discharging pipe 604, so that the air pressure in the grease storage cavity is the same as the external atmospheric pressure, after the inner boom 3 is controlled to contract to the set length and then immediately elongated to the longest, the skin bag 8 is extruded again, so that the gas in the skin bag 8 enters the grease storage cavity, first, a small amount of liquid lubricating grease enters the discharging pipe 604, when the input end of the discharging pipe 604 is below the sliding block 2 again, the liquid lubricating grease in the grease storage cavity will not enter the discharging pipe 604, but at this time, the liquid lubricating grease in the grease storage cavity will be injected into the groove 9 through the L-shaped pipe 5, part of the liquid lubricating grease in the groove 9 is formed into paste when contacting the outer boom 1, and protection is formed between the sliding block 2 and the outer boom 1, so that the abrasion of the sliding block 2 is reduced, through controlling the inner boom 3 to contract to the shortest, in the process, the skin bag 8 restores to the original state again, the excess lubricating grease in the groove 9 is sucked back through the L-shaped pipe 5, so that waste is avoided, at the same time, when the sliding block 2 slides on the inner wall of the outer boom 1, a small amount of air enters the grease storage cavity through the L-shaped pipe 5, so that the liquid lubricating grease in the grease storage cavity will slowly drip onto the cloth cover along with the discharging pipe 604 and the spray head 601, in the process that the cloth cover rolls on the inner wall of the outer boom 1, the cloth cover evenly applies the liquid lubricating grease to the inner wall of the outer boom 1, the liquid lubricating grease is formed into paste after being cooled on the travel route of the sliding block 2, and protection is provided to the edge of the sliding block 2, so that the protection efficiency of the sliding block 2 is ensured.

[0034] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined object, the specific embodiments, structures, features and effects according to the present application will be described in detail below in combination with the drawings and preferred embodiments.

[0035] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solution of the present application. Any modification, change, equivalent change and modification of the above embodiments made according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A grease filling mechanism of a crane jib, comprising an outer jib (1) and an inner jib (3), the inner jib (3) being movably arranged inside the outer jib (1), characterized in that: The inner lifting arm (3) is provided with a sliding block (2) on both sides of the outer wall, and the sliding block (2) is internally provided with a grease storage cavity. The two sliding blocks (2) are in sliding connection with the inner wall of the outer lifting arm (1). The top of the sliding block (2) is movably provided with a material injection mechanism (4) for adding lubricating grease to the grease storage cavity. The bottom of the sliding block (2) is provided with a material feeding mechanism (6) for uniformly coating the inner wall of the outer lifting arm (1). The material feeding mechanism (6) comprises a lifting rod (603) movably inserted into the bottom of the sliding block (2). The bottom of the lifting rod (603) is rotatably provided with a roller (602). The outer wall of the roller (602) is fixedly provided with a cloth sleeve. The cloth sleeve is in contact with the inner wall of the outer lifting arm (1). The inside of the lifting rod (603) is fixedly embedded with a discharge pipe (604). The output end of the discharge pipe (604) extends out of the lifting rod (603) and is fixedly provided with a spray head (601). The spray head (601) is located above the cloth sleeve. The input end of the discharge pipe (604) is located at the bottom of the grease storage cavity. The material injection mechanism (4) comprises a feeding pipe (401) movably inserted into the top of the sliding block (2). The bottom end of the feeding pipe (401) is fixedly connected with the top end of the lifting rod (603). The sidewall of the bottom of the feeding pipe (401) is also provided with a discharge hole (402). The middle of the feeding pipe (401) is fixedly provided with a baffle (404). The baffle (404) is in contact with the inner wall of the outer lifting arm (1). The baffle (404) and the sliding block (2) are elastically provided with a thrust spring (403). The side of the sliding block (2) facing the outer lifting arm (1) is provided with a groove (9). The groove (9) is fixedly provided with an L-shaped pipe (5) at the bottom. The input end of the L-shaped pipe (5) is located in the middle of the grease storage cavity. The top of the sliding block (2) is also fixedly provided with a skin bag (8). The bottom of the skin bag (8) is in communication with the grease storage cavity through a connecting pipe (7). The inner wall of the sliding block (2) is also fixedly provided with an electric heating plate for melting lubricating grease.

2. A grease filling mechanism for a crane jib according to claim 1, characterised in that: The top end of the feeding pipe (401) movably penetrates the outer lifting arm (1) and is fixedly provided with a sealing plug (405).

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