A mobile ladder for a mining machinery cab

Abstract

The utility model provides a mobile ladder for a cab of a mining machinery, and relates to the technical field of mining machinery, including: two guide rail assemblies, which are arranged opposite to each other up and down and installed on the side of the cab; four pulley blocks, wherein every two pulley blocks are slidably installed on a guide rail assembly; a ladder assembly, whose upper and lower parts are both connected to two pulley blocks, so that the ladder assembly can move on the door on the side of the cab and behind it; and a locking member, which can lock the pulley block in a predetermined position. The beneficial effects of the utility model are as follows: the ladder can slide forward and backward through the pulley block and be locked through the locking member, and when climbing operations are required, the ladder is slid to the cab door and locked, and the space for getting on and off the cab door is used for climbing operations; and when climbing operations are not required, the ladder is slid to the rear of the cab door and locked, and the ladder is stored behind the cab door to avoid affecting getting on and off the cab through the door; the space utilization rate is optimized, and the convenience of operation of the cab occupants is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of mining machinery, in particular to a mobile ladder for a mining machinery cab. Background Art

[0002] Mining machinery (engineering vehicles) often need to climb the roof via ladders when performing operations. Currently, most mining machinery uses fixed ladders, which are fixedly installed behind the cab door. However, in some operating scenarios, due to the limitations of the structure of mining machinery and the layout of operating parts, when mining machinery is actually operating, the position of the ladder determines that the free space outside is relatively narrow, which results in limited space for climbing the ladder, making it difficult to meet the needs of climbing up and down the ladder. Utility Model Content

[0003] In view of this, in order to solve the above-mentioned problems existing in the use of fixed ladders for mining machinery, an embodiment of the utility model provides a mobile ladder for the cab of a mining machinery.

[0004] The embodiment of the utility model provides a mobile ladder for a mining machinery cab, comprising:

[0005] Two guide rail assemblies are arranged opposite to each other up and down and installed on the side of the cab;

[0006] Four pulley blocks, wherein every two of the pulley blocks are slidably mounted on one of the guide rail assemblies;

[0007] A ladder assembly, the upper and lower parts of which are connected to the two pulley blocks, so that the ladder assembly can move along the door on the side of the cab and behind it;

[0008] and a locking member, which can lock the pulley block at a predetermined position so that the ladder assembly is located outside the door on the side of the cab or behind the door on the side of the cab.

[0009] Furthermore, the ladder assembly includes a ladder and four ladder brackets fixed on the ladder, each of the ladder brackets is connected to one of the pulley sets, the ladder bracket is provided with a locking hole, the locking member includes a locking bracket and a locking pin, the locking pin is telescopically mounted on the locking bracket, and the locking pin can be inserted into or removed from the locking hole to lock or release the ladder bracket.

[0010] Furthermore, the locking member also includes an elastic member, two positioning rods and two locking rods. The locking pin is rotatably installed on the locking bracket. The two locking rods are arranged on both sides of the locking pin. The elastic member is arranged on the periphery of the locking pin and is located between the locking rod and the locking bracket. The two positioning rods are arranged on the locking bracket. The two positioning rods are located on both sides of the locking pin and are arranged perpendicular to the locking pin. The rotation of the locking pin can cause the locking rod and the positioning rod to be staggered. The elastic member enables the locking pin to be inserted into the locking hole to lock the ladder bracket.

[0011] Furthermore, the elastic member is a spring, and the spring is sleeved on the locking pin.

[0012] Furthermore, the positioning rod is provided with an annular positioning groove, and the locking rod can be embedded in the positioning groove.

[0013] Furthermore, the locking member is mounted on the side of the cab and is arranged above the guide rail assembly located below.

[0014] Furthermore, the guide rail assembly includes a guide rail, two bases and two buffer blocks, the two bases are fixed to the sides of the cab, the two ends of the guide rail are respectively inserted into the two bases and fixedly connected to the two bases, each buffer block is arranged on the inner side of one of the bases, and the pulley block slides to the buffer block and can be tightened by the buffer block.

[0015] Furthermore, the length of the guide rail is twice the width of the ladder, and the locking member is arranged above the midpoint of the guide rail.

[0016] Furthermore, the pulley block includes a pulley bracket and two pulleys, the two pulleys are rotatably mounted on the pulley bracket and arranged opposite to each other up and down, and the guide rail assembly passes through the two pulley brackets.

[0017] Furthermore, the pulley block also includes two pulley shafts, the two pulley shafts are installed on the pulley bracket, and each pulley is installed on one pulley shaft through a bearing.

[0018] The beneficial effects brought about by the technical solution provided by the embodiment of the utility model are as follows: a mobile ladder for the cab of a mining machinery of the utility model is arranged on the side of the cab of the mining machinery. The ladder can slide back and forth through a pulley block and be locked through a locking member. When climbing operations are required, the ladder is slid to the cab door and locked, and the space behind the cab door for getting on and off the vehicle is utilized for climbing operations; and when climbing operations are not required, the ladder is slid to the rear of the cab door and locked, and the ladder is stored behind the cab door to avoid affecting getting on and off the vehicle through the door; space utilization is optimized, and convenience of operation for cab occupants is ensured. The ladder is suitable for use in harsh environments, and the environmental adaptability of mining machinery is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a mobile ladder for a mining machinery cab of the utility model;

[0020] Figure 2 It is the installation diagram of the guide rail assembly and the pulley assembly;

[0021] Figure 3 is a cross-sectional view of the pulley block;

[0022] Figure 4 is a schematic diagram of the locking member.

[0023] In the figure: 100, cab side; 200, door; 1, guide rail assembly; 101, base; 102, guide rail; 103, buffer block; 2, pulley block; 201, pulley bracket; 202, pulley; 203, pulley shaft; 204, bushing; 205, bearing; 206, pulley gasket; 3, ladder assembly; 301, ladder; 302, ladder bracket; 303, lock hole; 4, locking member; 401, locking bracket; 402, locking pin; 403, elastic member; 404, locking rod; 405, positioning rod; 406, positioning groove. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model clearer, the following will further describe the implementation of the utility model in conjunction with the accompanying drawings. The following is a preferred embodiment of the utility model among multiple possible embodiments, which is intended to provide a basic understanding of the utility model, but is not intended to confirm the key or decisive elements of the utility model or limit the scope of protection.

[0025] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0026] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0028] It should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] Please refer to Figure 1 An embodiment of the utility model provides a mobile ladder for a mining machinery cab, which is installed on the side 100 of the mining machinery cab and mainly includes two guide rail assemblies 1, four pulley sets 2, a ladder assembly 3 and a locking member 4.

[0030] The two guide rail assemblies 1 are arranged opposite to each other up and down and installed on the cab side 100. Generally, the guide rail assemblies 1 are arranged horizontally, wherein one guide rail assembly 1 is located above the door 200 on the cab side 100, and the other guide rail assembly 1 is located below the door 200 on the cab side 100.

[0031] like Figure 2 As shown, the guide rail assembly 1 includes a guide rail 102 and two bases 101, the two bases 101 are fixed to the side 100 of the cab, the two bases 101 are arranged horizontally opposite to each other, the guide rail 102 is a circular guide rail, and the two ends of the guide rail 102 are respectively inserted into the two bases 101 and fixedly connected to the two bases 101. The end of the guide rail 102 is hidden in the base 101, which is difficult to accumulate dust during use, ensuring the reliability of use in a mining environment.

[0032] Recombination Figure 3 As shown, every two pulley blocks 2 are slidably mounted on one guide rail assembly 1, wherein two pulley blocks 2 are mounted on the slide rail of the guide rail assembly 1 located above, and the other two pulley blocks 2 are mounted on the slide rail of the guide rail assembly 1 located below, and the four pulley blocks 2 are arranged in a rectangular shape. The pulley block 2 includes a pulley bracket 201 and two pulleys 202, and the two pulleys 202 are rotatably mounted on the pulley bracket 201 and arranged opposite to each other up and down, and the guide rail assembly 1 passes through the two pulley brackets 201, so that the pulley block 2 can slide along the guide rail 102.

[0033] In some embodiments, the pulley block 2 further includes two pulley shafts 203, the two pulley shafts 203 are mounted on the pulley bracket 201, and each pulley 202 is mounted on one pulley shaft 203 through a bearing 205. Here, a sleeve 204 is provided in the middle of each pulley shaft 203, and a bearing 205 is provided at each end. The pulley 202 is sleeved on the sleeve 204 and located between the two bearings 205. The pulley shaft 203, the bearing 205 and the pulley bracket 201 are all transitionally assembled to improve the bearing capacity and stability of the pulley block 2. A pulley gasket 206 can also be provided between the pulley 202 and the pulley bracket 201 to ensure the movement clearance when the pulley 202 rotates.

[0034] The upper and lower parts of the ladder assembly 3 are connected to the two pulley blocks 2. The ladder assembly 3 includes a ladder 301 and four ladder brackets 302 fixed on the ladder 301, and each of the ladder brackets 302 is connected to one of the pulley blocks 2. The ladder bracket 302 is an L-shaped bent plate, one side of the ladder bracket 302 is welded to the inner side of the ladder 301, and the other side is welded to the pulley bracket 201 of the pulley block 2. In this way, the ladder 301 can move forward and backward through the four pulley blocks 2, so that the ladder assembly 3 can move on the door 200 of the side 100 of the cab and behind it.

[0035] like Figure 4 As shown, the locking member 4 can lock the pulley block 2 at a predetermined position. Specifically, a locking hole 303 is provided on the ladder bracket 302, and the locking member 4 includes a locking bracket 401 and a locking pin 402, and the locking pin 402 is telescopically mounted on the locking bracket 401, and the locking pin 402 can be inserted into or removed from the locking hole 303 to lock or release the ladder bracket 302, so that the pulley block 2 is locked after sliding to a predetermined position, thereby locking the ladder 301 at a predetermined position.

[0036] In some embodiments, the locking member 4 further includes an elastic member 403, two positioning rods 405 and two locking rods 404. The locking pin 402 is vertically arranged and bent at the upper end, and is L-shaped as a whole. The locking pin 402 is rotatably mounted on the locking bracket 401. The two locking rods 404 are arranged on both sides of the locking pin 402. The two locking rods 404 are located in the extension direction of both ends of a diameter of the locking pin 402. The elastic member 403 is arranged on the periphery of the locking pin 402 and is located between the locking rod 404 and the locking bracket 401. The elastic member 403 is a spring, and the spring is sleeved on the locking pin 402. The two positioning rods 405 are arranged on the locking bracket 401. The two positioning rods 405 are located on both sides of the locking pin 402 and are arranged vertically to the locking pin 402. Considering the convenience of operating the locking member 4 , the locking member 4 is installed on the side surface 100 of the cab and is arranged above the guide rail assembly 1 located below.

[0037] The locking pin 402 has two states: released and locked.

[0038] Released state: the two locking rods 404 support the upper parts of the two positioning rods 405, and the elastic member 403 is compressed. An annular positioning groove 406 can be provided at the front end of the positioning rod 405, and when the locking rod 404 is supported on the positioning rod 405, the locking rod 404 can be embedded in the positioning groove 406, so that the locking rod 404 is in a stable supporting state.

[0039] Locking state: the locking pin 402 is rotated to stagger the two locking rods 404 and the two positioning rods 405. Under the restoring force of the elastic member 403, the locking pin 402 moves upward and is inserted into the locking hole 303 to lock the ladder bracket 302, thereby locking the ladder 301 at a predetermined position.

[0040] The predetermined position of the ladder 301 can be flexibly set according to the actual operation scene of the mining machinery. Generally, the door 200 on the side 100 of the cab is used as a predetermined position, and another position behind the door 200 on the side 100 of the cab is used as another predetermined position. Two locking members 4 can be provided, and the two predetermined positions are locked by the two locking members 4 respectively cooperating with the two ladder brackets 302 located below.

[0041] The number of the locking member 4 can also be set to one, and the locking member 4 can cooperate with the two ladder brackets 302 located below to achieve locking at two predetermined positions. In this embodiment, the length of the guide rail 102 is twice the width of the ladder 301, and the locking member 4 is arranged above the midpoint of the guide rail 102. In this way, the length of the guide rail 102 is relatively short, which can meet the switching of the position of the ladder 301 and improve the space utilization.

[0042] In some embodiments, the guide rail assembly 1 further includes two buffer blocks 103, each of which is disposed inside the base 101, and the buffer blocks 103 can be made of soft materials such as rubber blocks. When the ladder 301 is locked at a predetermined position, the pulley bracket 201 of the pulley block 2 close to the buffer block 103 is pressed against by the buffer block 103, so that the ladder 301 is in a stable locked state.

[0043] The movable ladder of the mining machinery cab is arranged on the side 100 of the mining machinery cab. When climbing is required, the ladder 301 is slid forward to the position of the cab door 200, and the rear ladder bracket 302 is just moved to the bottom of the locking member 4. The locking pin 402 is inserted into the lock hole 303 on the ladder bracket 302 to lock the ladder 301 to the cab door 200, and the space for getting on and off the cab door 200 is used for climbing. When climbing is not required, the ladder 301 is moved forward. After sliding to the rear of the cab door 200, the front ladder bracket 302 moves just below the locking member 4, and the locking pin 402 is inserted into the locking hole 303 on the ladder bracket 302 to lock the ladder 301 behind the cab door 200. In this way, the ladder 301 is stored behind the cab door 200 to avoid affecting getting on and off the vehicle through the door 200, thereby optimizing space utilization, ensuring the convenience of operation for cab occupants, being suitable for use in harsh environments, and improving the environmental adaptability of mining machinery.

[0044] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the parts in the drawings and the positions of the parts relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can change accordingly according to different ways of use and placement, and the use of the directional words should not limit the scope of protection claimed in this application.

[0045] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mobile ladder for a mining machinery cab, characterized in that: include: Two guide rail assemblies are arranged opposite to each other up and down and installed on the side of the cab; Four pulley blocks, wherein every two of the pulley blocks are slidably mounted on one of the guide rail assemblies; A ladder assembly, the upper and lower parts of which are connected to the two pulley blocks, so that the ladder assembly can move along the door on the side of the cab and behind it; and a locking member, which can lock the pulley block at a predetermined position so that the ladder assembly is located outside the door on the side of the cab or behind the door on the side of the cab.

2. A mobile ladder for a mining machinery cab as claimed in claim 1, characterized in that: The ladder assembly includes a ladder and four ladder brackets fixed on the ladder, each of the ladder brackets is connected to a pulley block, the ladder bracket is provided with a locking hole, the locking member includes a locking bracket and a locking pin, the locking pin is telescopically mounted on the locking bracket, and the locking pin can be inserted into or removed from the locking hole to lock or release the ladder bracket.

3. A mobile ladder for a mining machinery cab as claimed in claim 2, characterized in that: The locking member also includes an elastic member, two positioning rods and two locking rods. The locking pin is rotatably mounted on the locking bracket. The two locking rods are arranged on both sides of the locking pin. The elastic member is arranged on the periphery of the locking pin and is located between the locking rod and the locking bracket. The two positioning rods are arranged on the locking bracket. The two positioning rods are located on both sides of the locking pin and are arranged perpendicular to the locking pin. The locking pin can be rotated to stagger the locking rod and the positioning rod. The elastic member enables the locking pin to be inserted into the locking hole to lock the ladder bracket.

4. A mobile ladder for a mining machinery cab as claimed in claim 3, characterized in that: The elastic member is a spring, and the spring is sleeved on the locking pin.

5. A mobile ladder for a mining machinery cab as claimed in claim 3, characterized in that: The positioning rod is provided with an annular positioning groove, and the locking rod can be embedded in the positioning groove.

6. A mobile ladder for a mining machinery cab as claimed in claim 1, characterized in that: The locking member is installed on the side of the cab and is arranged above the guide rail assembly located below.

7. A mobile ladder for a mining machinery cab as claimed in claim 1, characterized in that: The guide rail assembly includes a guide rail, two bases and two buffer blocks. The two bases are fixed to the sides of the cab. The two ends of the guide rail are respectively inserted into the two bases and fixedly connected to the two bases. Each buffer block is arranged on the inner side of a base. The pulley block slides to the buffer block and can be tightened by the buffer block.

8. A mobile ladder for a mining machinery cab as claimed in claim 7, characterized in that: The length of the guide rail is twice the width of the ladder, and the locking member is arranged above the midpoint of the guide rail.

9. A mobile ladder for a mining machinery cab as claimed in claim 1, characterized in that: The pulley block comprises a pulley bracket and two pulleys. The two pulleys are rotatably mounted on the pulley bracket and arranged opposite to each other up and down. The guide rail assembly passes through the two pulley brackets.

10. A mobile ladder for a mining machinery cab as claimed in claim 9, characterized in that: The pulley block also includes two pulley shafts, the two pulley shafts are installed on the pulley bracket, and each pulley is installed on one pulley shaft through a bearing.

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