32-ton low-clearance hydraulic hoist lifting beam

Abstract

The utility model provides a 32-ton low-clearance hydraulic hoist hoisting beam which comprises a bearing trolley movably arranged on a monorail crane track, four first-stage bearing beams hinged to the bearing trolley and arranged below the bearing trolley, and a first rotary connecting frame rotationally connected with the two first-stage bearing beams and provided with a rotatable second-stage bearing beam. The first rotary connecting frame is rotatably connected with the two first-stage bearing beams and is provided with a rotatable first-stage bearing beam, the second rotary connecting frame is rotatably connected with the other two first-stage bearing beams and is provided with a rotatable second-stage bearing beam, the connecting rods are used for connecting the first-stage bearing beams oppositely arranged on the first rotary connecting frame and the second rotary connecting frame, and the hydraulic hoists are arranged at the two ends of the two second-stage bearing beams respectively. The two lifting suspension arms are in transmission connection with the two hydraulic hoists at the same ends of the two secondary bearing beams respectively, and the lifting chains are arranged on the lifting suspension arms in a replaceable mode. The utility model has the advantages of small occupied clearance height, strong turning capacity in the operation process, high loading capacity and convenience in underground installation and use, and can adapt to the height requirements of different roadways.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a 32-ton low-headroom hydraulic hoist lifting beam. Background Art

[0002] Monorail cranes are usually used in underground coal mines to lift equipment and materials using lifting beams (lifting devices). Since the height of underground coal mine tunnels is generally around 3.2 meters, the ideal state of the lifting beam is that the clearance it occupies in the tunnel is as small as possible and the lifting stroke is as large as possible to facilitate the lifting of large equipment. At present, the monorail lifting beam used in coal mines is typically a high-efficiency hydraulic cylinder lifting beam disclosed in the Chinese patent document with the authorization announcement number CN211769898U. The following aspects need to be improved: first, the hydraulic cylinder is used as the lifting power, and the lifting stroke is limited; second, due to the structural limitations, the headroom occupied by itself is still relatively large, and there is still a need for improvement; third, the lifting arm (lifting cross plate) is an integral structural member, and it is difficult to enter the coal mine tunnel and install it because of its large size; fourth, its overall structure makes its cornering ability weak, and it is easy to get stuck during operation; fifth, its lifting chain is an integrated structure, the chain is not flexible, and the chain cannot be easily replaced according to the size of the workpiece being lifted. Therefore, further improving the existing monorail lifting beam (lifting device) in coal mines to make it more suitable for the lifting and transportation of equipment and materials, especially large equipment, in coal mine tunnels is a technical problem that needs to be solved in the industry. Utility Model Content

[0003] The purpose of the utility model is to solve the problems existing in the prior art and to provide a 32-ton low-headroom hydraulic hoist lifting beam with an improved structure.

[0004] The technical solution of the utility model is: the 32-ton low-headroom hydraulic hoist lifting beam of the utility model comprises a load-bearing trolley which is movably arranged on a monorail hanging track when in use, and four primary load-bearing beams which are hingedly arranged below the load-bearing trolley with the above-mentioned load-bearing trolley, and its structural characteristics are: it also comprises a first swivel connecting frame which is rotatably connected to two primary load-bearing beams and is provided with a rotatable secondary load-bearing beam, a second swivel connecting frame which is rotatably connected to the other two primary load-bearing beams and is provided with a rotatable secondary load-bearing beam, a connecting rod connecting each of the primary load-bearing beams which are relatively arranged on the first swivel connecting frame and the second swivel connecting frame, a hydraulic hoist is respectively arranged at both ends of the two secondary load-bearing beams, two lifting booms which are transmission-connected to the two hydraulic hoists at the same end of the two secondary load-bearing beams, and a lifting chain which is replaceably arranged on the lifting boom.

[0005] A further solution is: eight of the above-mentioned trolleys are evenly distributed on the monorail at five lifting points on the top of the tunnel, and two of the eight trolleys are hingedly arranged at the upper end of each primary load-bearing beam.

[0006] A further solution is: an articulated connector is provided at one end of the primary load-bearing beam, joint bearings are built into both ends of the connecting rod, and the connecting rod is connected to the articulated connector of a primary load-bearing beam through the joint bearings built into both ends of the connecting rod.

[0007] A further solution is: the above-mentioned first rotating connecting frame also includes a main frame, a first-level load-bearing beam connecting member is fixedly arranged on each side of the above-mentioned main frame, a rotating shaft is arranged in the main frame and a copper sleeve is arranged on the outside of the rotating shaft, and the above-mentioned second-level load-bearing beam is rotatably arranged on the main frame through the rotating shaft; the two first-level load-bearing beams each pass through a first-level load-bearing beam connecting member of the first rotating connecting frame and are rotatably connected to the first-level load-bearing beam connecting member; the structure of the second rotating connecting frame is the same as that of the first rotating connecting frame.

[0008] A further solution is: the above-mentioned hydraulic hoist has a lifting chain and is equipped with a chain end fixing and a lifting wheel. Two of the above-mentioned chain end fixings are fixedly arranged on each of the two secondary load-bearing beams. One end of the lifting chain of each hydraulic hoist passes around a lifting wheel and is fixedly connected to a corresponding chain end fixing fixed on the secondary load-bearing beam.

[0009] A further solution is: the above-mentioned lifting boom includes a first body, a second body, a body connecting piece and a lifting chain connecting piece; a sliding hole is provided on the outer side of the upper end of the above-mentioned second body, the first body and the second body are fixedly connected through the body connecting piece, a lifting chain connecting piece is fixedly arranged on the upper end of the outer side of the first body, and a lifting chain connecting piece is slidably arranged on the upper end of the outer side of the second body relying on the sliding hole of the second body; the two lifting booms are each connected by a fixed lifting chain connecting piece with a corresponding hydraulic hoist transmission sleeve on both sides of the secondary load-bearing beam arranged on the first rotating connecting frame, and the two lifting booms are each connected by a slidable lifting chain connecting piece with a corresponding hydraulic hoist transmission sleeve on both sides of the secondary load-bearing beam arranged on the second rotating connecting frame.

[0010] A further solution is: two of the above-mentioned lifting chains are respectively arranged on the lower side of each lifting boom, and a lifting hook is arranged at the lower end of each lifting chain.

[0011] The utility model has positive effects: (1) The utility model adopts the overall structural design, and the components including the primary load-bearing beam, two slewing connecting frames, and the secondary load-bearing beam are basically on the same horizontal plane, thereby minimizing the headroom height of the beam body. (2) The utility model has a strong bending ability during operation through the design of the two slewing connecting frames being rotatable and the chain sliding holes being arranged on the lifting arm. (3) The utility model adopts a hydraulic hoist as a lifting power component, and its lifting stroke is not limited, and it can adapt to different tunnel height requirements without relocation. In addition, the lifting hoist adopts a moving wheel structure, so that the load capacity of the hoist can be doubled. (4) The lifting arm of the utility model adopts a split type, which makes it very convenient to lower into the well and install. (5) The lifting chain of the utility model moves with the lifting arm, and has a strong ability to adapt to different tunnel heights. The replacement of the overweight chain is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model, and also shows its connection relationship with the monorail hanging track;

[0013] Figure 2 for Figure 1 A top view of

[0014] Figure 3 for Figure 2 AA section view.

[0015] The reference numerals in the above drawings are as follows:

[0016] Carrying trolley 1; primary bearing beam 2; first rotary connecting frame 3, main frame 31, primary bearing beam connecting piece 32, secondary bearing beam 33, rotating shaft 34, copper sleeve 35; second rotary connecting frame 4; connecting rod 5; hydraulic hoist 6, lifting chain 61, chain end fixing piece 62, lifting moving wheel 63; lifting boom 7, first body 71, second body 72, sliding hole 72-1, body connecting piece 73, lifting chain connecting piece 74; lifting chain 8, lifting hook 81;

[0017] Monorail crane track 100. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0019] (Example 1)

[0020] See Figures 1 to 3 The 32-ton low-headroom hydraulic hoist lifting beam of this embodiment is mainly composed of a load-bearing trolley 1, a primary load-bearing beam 2, a first rotary connecting frame 3, a second rotary connecting frame 4, a connecting rod 5, a hydraulic hoist 6, a lifting boom 7 and a lifting chain 8.

[0021] The load-bearing trolley 1 is used for the hydraulic hoist lifting beam of this embodiment to be connected to the monorail hanging track 100 of the coal mine so as to be movable on the monorail hanging track 100. In this embodiment, 8 load-bearing trolleys 1 are preferably evenly arranged on the monorail hanging track 100, spanning the 5 lifting points of the monorail hanging track 100 on the top of the tunnel to reduce the tension borne by each lifting point.

[0022] One end of the first-level load-bearing beam 2 is provided with a hinged connector, and the middle is provided with an upper and lower connecting hole; there are 4 first-level load-bearing beams 2, and the upper end of each first-level load-bearing beam 2 is hingedly connected to the load-bearing trolley 1. Preferably, the upper end of each first-level load-bearing beam 2 is hingedly connected to two load-bearing trolleys 1, so that the first-level load-bearing beam 2 has a vertical rotation freedom, so that the hydraulic hoist lifting beam of this embodiment can smoothly pass through the vertical bend of the monorail hanging track 100 during operation.

[0023] The first rotary connecting frame 3 is mainly composed of a main frame 31, a primary load beam connector 32, a secondary load beam 33, a rotating shaft 34 and a copper sleeve 35. The main frame 31 is an overall H-shaped structural member, and a primary load beam connector 32 is fixedly arranged on both sides of the main frame 31, and the secondary load beam 33 is rotatably arranged on the main frame 31 through a rotating shaft 34 arranged in the main frame 31 and a copper sleeve 35 arranged outside the rotating shaft 34. Two of the aforementioned four primary load beams 2 each pass through a primary load beam connector 32 of the first rotary connecting frame 3 and are rotatably connected to the primary load beam connector 32.

[0024] The structure of the second rotary connecting frame 4 is the same as that of the first rotary connecting frame 3. Another secondary load beam is rotatably arranged on the main frame. The other two of the aforementioned four primary load beams 2 each pass through a primary load beam connector of the second rotary connecting frame 4 and are rotatably connected to the primary load beam connector.

[0025] The above structure of the first rotary connecting frame 3 and the second rotary connecting frame 4 enables the main frame, the primary load-bearing beam connecting member, and the secondary load-bearing beam to be basically on the same plane, thereby effectively reducing the occupied headroom height.

[0026] The connecting rod 5 is used to connect each primary load-bearing beam 2 which is relatively arranged on the first rotary connecting frame 3 and the second rotary connecting frame 4. Preferably, joint bearings are built into both ends of the connecting rod 5, and the connecting rod 5 is connected to the hinged connector of each primary load-bearing beam 2 by the joint bearings built into both ends of the connecting rod 5, so as to improve the passing performance of the hydraulic hoist lifting beam of this embodiment in horizontal curves and vertical curves when running on the monorail hanging track 100.

[0027] The hydraulic hoist 6 is used as a lifting power source. One hydraulic hoist 6 is fixedly arranged at each end of the secondary load-bearing beam 33 of the first rotary connecting frame 3 and the secondary load-bearing beam of the second rotary connecting frame 4. The hydraulic hoist 6 has a lifting chain 61 and is equipped with a chain end fixing 62 and a lifting wheel 63; one end of the lifting chain 61 of each hydraulic hoist 6 is passed around a lifting wheel 63 and fixedly connected to a chain end fixing 62 fixed on the secondary load-bearing beam. The hydraulic hoist 6 is used as a lifting equipment. Compared with the existing lifting beam powered by a hydraulic cylinder, the lifting stroke of the hydraulic hoist lifting beam of this embodiment is not limited, and can meet the needs of lifting equipment at different tunnel heights without reprinting; by setting the lifting wheel 63, the bearing capacity of the hydraulic hoist 6 can be doubled, reducing the selection cost of the hydraulic hoist 6.

[0028] The lifting arm 7 is a split structure, and the lifting arm 7 is mainly composed of a first body 71, a second body 72, a body connector 73 and a lifting chain connector 74; a sliding hole 72-1 is provided on the outer side of the upper end of the second body 72, the first body 71 and the second body 72 are fixedly connected into one body through the body connector 73, and a lifting chain connector 74 is fixedly provided on the upper end of the outer side of the first body 71. A lifting chain connector 74 is slidably provided on the upper end of the outer side of the second body 72 relying on the sliding hole 72-1 of the second body 72. The lifting arm 7 is provided with two identical structures, each of the two lifting arms 7 is connected by a fixed lifting chain connecting member 74 with a corresponding lifting chain 61 of a hydraulic hoist 6 rotatably arranged on both sides of the secondary load-bearing beam 33 on the first rotary connecting frame 3, and each of the two lifting arms 7 is connected by a slidable lifting chain connecting member 74 with a corresponding lifting chain 61 of a hydraulic hoist 6 fixedly arranged on both sides of the secondary load-bearing beam on the second rotary connecting frame 4. The lifting arm 7 of this embodiment adopts a split structural member to facilitate the lowering of the lifting arm 7 into the well. A lifting chain connecting member 74 is slidably arranged on the upper end of the outer side of the second body 72 to facilitate turning.

[0029] The lifting chain 8 is arranged on the lifting boom 7, and a lifting hook 81 is arranged at the lower end of the lifting chain 8. Two lifting chains 8 are replaceably arranged at the lower side of each lifting boom 7. The lifting chain 8 moves with the lifting boom 7, has a strong ability to adapt to different tunnel heights, and the lifting chain 8 can be easily replaced according to the use needs.

[0030] The above embodiments are descriptions of specific implementation methods of the present invention, rather than limitations of the present invention. Technical personnel in the relevant technical field can make various changes and modifications to obtain corresponding equivalent technical solutions without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present invention.

Claims

1. A 32-ton low-headroom hydraulic hoist lifting beam, comprising a load-bearing trolley movably arranged on a monorail lifting track when in use, and four primary load-bearing beams hinged to the load-bearing trolley and arranged below the load-bearing trolley, characterized in that: It also includes a first swivel connecting frame rotatably connected to two primary load-bearing beams and provided with a rotatable secondary load-bearing beam, a second swivel connecting frame rotatably connected to another two primary load-bearing beams and provided with a rotatable secondary load-bearing beam, a connecting rod connecting each of the first swivel connecting frame and the second swivel connecting frame that are relatively arranged on the first and second swivel connecting frames, a hydraulic hoist is arranged at each end of the two secondary load-bearing beams, two lifting arms each connected to the two hydraulic hoists at the same end of the two secondary load-bearing beams in a transmission manner, and a lifting chain replaceably arranged on the lifting arm.

2. The 32-ton low-headroom hydraulic hoist lifting beam according to claim 1 is characterized by: The load-bearing trolleys are evenly arranged on the monorail hanging track at five hanging points on the top of the laneway, and eight load-bearing trolleys are hingedly arranged on the upper end of each primary load-bearing beam.

3. The 32-ton low-headroom hydraulic hoist lifting beam according to claim 1 is characterized in that: One end of the primary load-bearing beam is provided with an articulated connector, and both ends of the connecting rod are provided with built-in spherical bearings. The connecting rod is connected to the articulated connector of a primary load-bearing beam through the built-in spherical bearings at both ends of the connecting rod.

4. The 32-ton low-headroom hydraulic hoist lifting beam according to claim 1 is characterized in that: The first rotary connecting frame also includes a main frame, a first-level load-bearing beam connecting member is fixedly arranged on each side of the main frame, a rotating shaft is arranged in the main frame and a copper sleeve is arranged on the outside of the rotating shaft, and the second-level load-bearing beam is rotatably arranged on the main frame through the rotating shaft; two first-level load-bearing beams each pass through a first-level load-bearing beam connecting member of the first rotary connecting frame and are rotatably connected to the first-level load-bearing beam connecting member; the structure of the second rotary connecting frame is the same as that of the first rotary connecting frame.

5. The 32-ton low-headroom hydraulic hoist lifting beam according to claim 1 is characterized in that: The hydraulic hoist has a lifting chain and is equipped with a chain end fixing and a lifting wheel. Two chain end fixings are fixedly arranged on each of the two secondary load-bearing beams. One end of the lifting chain of each hydraulic hoist passes around a lifting wheel and is fixedly connected to a corresponding chain end fixing fixed on the secondary load-bearing beam.

6. The 32-ton low-headroom hydraulic hoist lifting beam according to claim 1 is characterized by: The lifting boom comprises a first body, a second body, a body connecting piece and a lifting chain connecting piece; a sliding hole is provided on the outer side of the upper end of the second body, the first body and the second body are fixedly connected through the body connecting piece, a lifting chain connecting piece is fixedly arranged on the upper end of the outer side of the first body, and a lifting chain connecting piece is slidably arranged on the upper end of the outer side of the second body relying on the sliding hole of the second body; the two lifting booms are each connected by a fixed lifting chain connecting piece with a corresponding hydraulic hoist transmission sleeve on both sides of the secondary load-bearing beam arranged on the first rotating connecting frame, and the two lifting booms are each connected by a slidable lifting chain connecting piece with a corresponding hydraulic hoist transmission sleeve on both sides of the secondary load-bearing beam arranged on the second rotating connecting frame.

7. The 32-ton low-headroom hydraulic hoist lifting beam according to claim 1 is characterized by: The two lifting chains are respectively arranged on the lower side of each lifting boom, and a lifting hook is arranged at the lower end of each lifting chain.

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