Plug-in type connecting rod hydraulic support

Abstract

The utility model discloses a plug-in type connecting rod hydraulic support, which relates to the technical field of hydraulic supports and comprises a hydraulic support body, a base is arranged at the bottom end of the hydraulic support body, a middle connecting rod is connected to the middle surface of the base, and a plug-in structure is arranged at the intersection of the base and the bottom end of the middle connecting rod. The base is connected with the bottom end of the middle connecting rod through an insertion and extraction structure, the insertion and extraction structure comprises preformed holes, and the preformed holes are located in the two sides of the middle connecting rod and formed in the surface of the base; the connecting shaft can be prevented from moving in the preformed hole for a long distance through the limiting strip, the connecting shaft can be replaced after being abraded or broken, the connecting shaft is convenient to replace, the connecting shaft is pressed downwards through the pressing block, the end of the connecting shaft is prevented from falling off from the interior of the preformed groove, and the service life of the connecting shaft is prolonged. And when the limiting strip axially moves along the connecting shaft, the limiting strip can be limited by the pressing block, so that the limiting strip is prevented from axially falling off from the preformed hole.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic supports, in particular to a plug-in connecting rod hydraulic support. Background Art

[0002] Hydraulic support is an important equipment for comprehensive mechanized coal mining. It is used to maintain the roof of the coal mining face and isolate the goaf, providing a safe working space for the coal mining machine, conveyor and workers. The hydraulic support connecting rod is divided into front and rear connecting rods. The structural form of the front and rear connecting rods can be integral or split.

[0003] There are certain disadvantages in the hydraulic support in the prior art. The front connecting rod of the hydraulic support is generally connected by a pin shaft. Since there is a large load between the pin shaft and the connecting rod, the pin shaft and the connecting rod will be worn or broken when the pin shaft and the connecting rod are rotated and connected. The pin shaft needs to be replaced after it is damaged or worn. It is troublesome to replace the pin shaft from the hydraulic support, and a different method needs to be used to connect the pin shaft and the connecting rod. Utility Model Content

[0004] The purpose of the utility model is to provide a plug-in connecting rod hydraulic support to solve the problems raised in the above background technology.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A plug-in connecting rod hydraulic support comprises a hydraulic support body, a base is provided at the bottom end of the hydraulic support body, an intermediate connecting rod is connected to the middle surface of the base, a plug-in structure is provided at the intersection of the base and the bottom end of the intermediate connecting rod, and the base is connected to the bottom end of the intermediate connecting rod through the plug-in structure, the plug-in structure comprises a reserved hole, the reserved holes are located on both sides of the intermediate connecting rod, and the reserved holes are opened on the surface of the base, and the inside of the reserved hole is connected with a connecting shaft, and the connecting shaft passes through the end of the limit strip and the inside of the reserved hole, two receiving grooves are provided at both ends of the cylindrical surface of the connecting shaft, and the inside of the receiving groove is connected to the limit strip, and the end of the limit strip is rotatably connected to the reserved hole, and a telescopic spring is connected between the inside of the receiving groove and the end of the limit strip.

[0007] As a preferred technical solution of the utility model, the diameter of the connecting shaft is matched with the diameter of the reserved hole, and the connecting shaft is rotatably connected to the end of the intermediate connecting rod.

[0008] As a preferred technical solution of the utility model, a middle groove is opened in the middle of the surface of the base, a limiting strip at one end of the connecting shaft is located inside the middle groove, and the limiting strip at the same end is movably connected to the side wall of the middle groove.

[0009] As a preferred technical solution of the utility model, a reinforcement structure is provided at one end of the connecting shaft and located at the middle groove, and the reinforcement structure includes a reserved groove, the reserved groove is opened above the reserved hole, and the width of the reserved groove is smaller than the diameter of the reserved hole, and two mating bosses are opened at a cylindrical end of the connecting shaft.

[0010] As a preferred technical solution of the utility model, the distance between the two matching bosses is matched with the width of the reserved groove, and the reserved groove is slidably connected to the matching boss.

[0011] As a preferred technical solution of the utility model, a clamping block is arranged inside the reserved groove, both ends of the clamping block are connected with fastening bolts, and the clamping block is fixed to the top of the base by the fastening bolts, and the bottom end of the clamping block is movably connected to the connecting shaft.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. A plug-in structure is provided. The connecting shaft is inserted from the middle groove into the reserved hole and the end of the middle connecting rod. The limit strip can prevent the connecting shaft from wandering too far inside the reserved hole. The connecting shaft can be replaced after it is worn or broken, and it is convenient to replace the connecting shaft.

[0014] 2. A reinforcement structure is provided to press the connecting shaft downward by a clamping block to prevent the end of the connecting shaft from falling off from the reserved groove, and the clamping block can limit the limit strip when the limit strip moves axially along the connecting shaft to prevent the limit strip from falling off axially from the reserved hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is the main structure diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the base and the middle connecting rod of the utility model;

[0018] Figure 3 This is a schematic diagram of the plug-in structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the reinforcement structure of the utility model.

[0020] In the figure: 1. hydraulic support body; 2. base; 3. middle connecting rod; 4. plug-in structure; 5. reinforcement structure; 41. connecting shaft; 42. reserved hole; 43. limit strip; 44. storage slot; 45. telescopic spring; 46. middle slot; 51. reserved slot; 52. clamping block; 53. fastening bolt; 54. matching boss. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the 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.

[0022] Embodiment 1:

[0023] See also Figure 1-Figure 4 As shown, the plug-in connecting rod hydraulic support includes a hydraulic support body 1, a base 2 is provided at the bottom end of the hydraulic support body 1, an intermediate connecting rod 3 is connected to the middle surface of the base 2, and the intermediate connecting rod 3 is rotatably connected to the base 2, so that the middle plate and the top plate of the hydraulic support body 1 can be moved, and a plug-in structure 4 is provided at the intersection of the base 2 and the bottom ends of the intermediate connecting rod 3, and the base 2 is connected to the bottom end of the intermediate connecting rod 3 through the plug-in structure 4. After the top plate of the hydraulic support body 1 moves, the middle plate moves, and the intermediate connecting rod 3 also swings. The plug-in structure 4 includes a reserved hole 42, and the reserved hole 42 is located on both sides of the intermediate connecting rod 3, and the reserved hole 42 is opened on the surface of the base 2, and the inside of the reserved hole 42 is connected to a connecting shaft 41, and the connecting shaft 41 passes through the end of the limit strip 43 and the reserved hole 42. Internally, the swinging middle connecting rod 3 rotates around the connecting shaft 41, and the two ends of the connecting shaft 41 rotate with the reserved holes 42. Since the diameter of the connecting shaft 41 is adapted to the diameter of the reserved hole 42, the connecting shaft 41 will not fall off from the reserved hole 42 when it rotates. Two receiving grooves 44 are provided at both ends of the cylindrical surface of the connecting shaft 41, and the interior of the receiving groove 44 is connected to a limit strip 43, and the end of the limit strip 43 is rotatably connected to the reserved hole 42. A telescopic spring 45 is connected between the interior of the receiving groove 44 and the end of the limit strip 43. The distance between the limit strips 43 at both ends of the connecting shaft 41 is greater than the spacing between the two reserved holes 42. The limit strip 43 at one end of the connecting shaft 41 is clamped on the outside of the reserved hole 42, and the limit strip 43 at the other end of the connecting shaft 41 descends along the reserved groove 51 and is placed into the reserved hole 42.

[0024] In this embodiment, the diameter of the connecting shaft 41 is matched with the diameter of the reserved hole 42, and the connecting shaft 41 is rotatably connected to the end of the intermediate connecting rod 3; an intermediate groove 46 is opened in the middle of the surface of the base 2, and a limiting strip 43 at one end of the connecting shaft 41 is located inside the intermediate groove 46, and the limiting strip 43 at the same end is movably connected to the side wall of the intermediate groove 46, so that the connecting shaft 41 can be inserted into the reserved hole 42 and the intermediate connecting rod 3 along the inside of the intermediate groove 46 and laterally, and the connecting shaft 41 can be plugged in and out as needed.

[0025] In this embodiment, a reinforcement structure 5 is provided at one end of the connecting shaft 41 and at the middle groove 46, and the reinforcement structure 5 includes a reserved groove 51, and the reserved groove 51 is opened above the reserved hole 42, and the width of the reserved groove 51 is smaller than the diameter of the reserved hole 42, and two mating bosses 54 are opened at a cylindrical end of the connecting shaft 41; the spacing between the two mating bosses 54 is adapted to the width of the reserved groove 51, and the reserved groove 51 is slidably connected with the mating boss 54, and the mating boss 54 and the reserved groove 51 can be slidably connected when the mating boss 54 is aligned with the reserved groove 51, and the connecting shaft 41 is rotatably connected with the reserved hole 42 when the mating boss 54 and the reserved groove 51 are staggered.

[0026] In this embodiment, a clamping block 52 is provided inside the reserved groove 51, and fastening bolts 53 are connected to both ends of the clamping block 52, and the clamping block 52 is fixed to the top of the base 2 by the fastening bolts 53. The bottom end of the clamping block 52 is movably connected to the connecting shaft 41, and the end of the connecting shaft 41 can be connected through the clamping block 52. The clamping block 52 is fixed to the top of the base 2 by the fastening bolts 53.

[0027] When the utility model is in use, the middle connecting rod 3 is rotatably connected with the base 2, so that the middle plate and the top plate of the hydraulic support body 1 can be moved. The base 2 is connected to the bottom end of the middle connecting rod 3 through the plug-in structure 4. After the top plate of the hydraulic support body 1 moves, the middle plate moves, and the middle connecting rod 3 also swings. The connecting shaft 41 passes through the end of the limiting strip 43 and the inside of the reserved hole 42. The swinging middle connecting rod 3 rotates around the connecting shaft 41, and the two ends of the connecting shaft 41 rotate with the reserved hole 42. Since the diameter of the connecting shaft 41 is adapted to the diameter of the reserved hole 42, the connecting shaft 41 will not fall off from the reserved hole 42 when it rotates. The distance between the limiting strips 43 at both ends of the connecting shaft 41 is greater than the distance between the two reserved holes 42. The limiting strip 43 at one end of the connecting shaft 41 is clamped on the outside of the reserved hole 42, and the limiting strip 43 at the other end of the connecting shaft 41 descends along the reserved groove 51 and is placed in the reserved hole 42, so that the connecting shaft 41 can be moved along the middle groove 4 6 and is laterally inserted into the reserved hole 42 and the interior of the middle connecting rod 3, and the connecting shaft 41 can be plugged in and out as needed. The reserved groove 51 is opened above the reserved hole 42, and the width of the reserved groove 51 is smaller than the diameter of the reserved hole 42. Two matching bosses 54 are opened at the end of a cylindrical surface of the connecting shaft 41. When the matching boss 54 is aligned with the reserved groove 51, the matching boss 54 and the reserved groove 51 can be slidably connected. When the matching boss 54 and the reserved groove 51 are staggered, the matching boss 54 and the reserved groove 51 can be connected. The connecting shaft 41 is rotatably connected to the reserved hole 42, and the bottom end of the clamping block 52 is movably connected to the connecting shaft 41. The end of the connecting shaft 41 can be connected by the clamping block 52, and the clamping block 52 is fixed to the top of the base 2 by a fastening bolt 53 to prevent the end of the connecting shaft 41 from falling off from the reserved groove 51, and when the limit strip 43 moves axially along the connecting shaft 41, the clamping block 52 can limit the limit strip 43 to prevent the limit strip 43 from falling off axially from the reserved hole 42.

[0028] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A plug-in connecting rod hydraulic support, comprising a hydraulic support body (1), wherein a base (2) is provided at the bottom end of the hydraulic support body (1), and an intermediate connecting rod (3) is connected to the middle surface of the base (2); characterized in that: A plug-in structure (4) is provided at the intersection of the base (2) and the bottom end of the intermediate connecting rod (3), and the base (2) is connected to the bottom end of the intermediate connecting rod (3) through the plug-in structure (4). The plug-in structure (4) comprises a reserved hole (42), the reserved hole (42) is located on both sides of the intermediate connecting rod (3), and the reserved hole (42) is opened on the surface of the base (2), and the inside of the reserved hole (42) is connected with a connecting shaft (41), and the connecting shaft (41) passes through the end of the limiting strip (43) and the inside of the reserved hole (42), two receiving grooves (44) are opened at both ends of the cylindrical surface of the connecting shaft (41), and the inside of the receiving groove (44) is connected to the limiting strip (43), and the end of the limiting strip (43) is rotatably connected to the reserved hole (42), and a telescopic spring (45) is connected between the inside of the receiving groove (44) and the end of the limiting strip (43).

2. The plug-in connecting rod hydraulic support according to claim 1, characterized in that: The diameter of the connecting shaft (41) matches the diameter of the reserved hole (42), and the connecting shaft (41) is rotatably connected to the end of the intermediate connecting rod (3).

3. The plug-in connecting rod hydraulic support according to claim 2, characterized in that: A middle groove (46) is provided in the middle of the surface of the base (2); a limiting strip (43) at one end of the connecting shaft (41) is located inside the middle groove (46); and the limiting strip (43) at the same end is movably connected to the side wall of the middle groove (46).

4. The plug-in connecting rod hydraulic support according to claim 1, characterized in that: A reinforcement structure (5) is provided at one end of the connecting shaft (41) and located at the middle groove (46). The reinforcement structure (5) comprises a reserved groove (51). The reserved groove (51) is provided above the reserved hole (42). The width of the reserved groove (51) is smaller than the diameter of the reserved hole (42). Two matching bosses (54) are provided at a cylindrical end of the connecting shaft (41).

5. The plug-in connecting rod hydraulic support according to claim 4, characterized in that: The distance between the two matching bosses (54) is matched with the width of the reserved groove (51), and the reserved groove (51) is slidably connected to the matching boss (54).

6. The plug-in connecting rod hydraulic support according to claim 5, characterized in that: A clamping block (52) is arranged inside the reserved groove (51), and fastening bolts (53) are connected to both ends of the clamping block (52). The clamping block (52) is fixed to the top of the base (2) by the fastening bolts (53), and the bottom end of the clamping block (52) is movably connected to the connecting shaft (41).

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