Hydraulic large column lifting device

Abstract

This utility model discloses a hydraulic large column lifting device, belonging to the technical field of lifting devices. This hydraulic large column lifting device includes a main body, a lifting mechanism, and a safety mechanism. The main body includes a pair of movable frames, with sliding rods fixedly installed on both sides of the upper end of each movable frame. Sliding sleeves are fitted on the outer sides of each sliding rod. A hydraulic telescopic rod is hinged to the facing surfaces of each pair of sliding sleeves, with the bottom end of the hydraulic telescopic rod hinged to the upper end of the movable frame. The lifting mechanism includes a pair of fixed frames, with the bottom ends of each pair of fixed frames connected to the top ends of the two pairs of sliding sleeves respectively. A pair of trusses is fixedly installed between the pair of fixed frames, with a winch fixedly installed on the inner side of each pair of trusses. Baffles are fixedly installed on the upper ends of the two pairs of trusses. This utility model effectively improves the practicality of the lifting device and has high practical value.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, specifically a hydraulic large column lifting device. Background Technology

[0002] In the process of coal mining, hydraulic supports are key equipment to ensure the safe and efficient operation of coal mining. As an important component of hydraulic supports, hydraulic columns are frequently replaced and transported.

[0003] Based on the above, the inventors have discovered the following problems: the width and height of underground roadways in coal mines are limited, and existing lifting devices are difficult to move in the roadways due to their large size (such as fixed cranes and crawler cranes). Furthermore, when the boom is extended or retracted, it is easy to come into contact with the top of the mine roadway, and falling gangue can easily cause injury to the operators.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a hydraulic large column lifting device in order to achieve a more practical purpose. Utility Model Content

[0005] The purpose of this utility model is to provide a hydraulic large column lifting device to solve the problems mentioned in the background art, such as the limited width and height of underground mine roadways, the inconvenience of moving existing lifting devices, and the difficulty in adapting to the lifting needs of complex underground working conditions.

[0006] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0007] A hydraulic column lifting device includes a main body, a lifting mechanism, and a safety mechanism. The main body includes a pair of movable frames, with sliding rods fixedly installed on both sides of the upper end of each movable frame. Sliding sleeves are fitted on the outer sides of each sliding rod. A hydraulic telescopic rod is hinged to the facing surfaces of each pair of sliding sleeves, and the bottom end of the hydraulic telescopic rod is hinged to the upper end of the movable frame. The lifting mechanism includes a pair of fixed frames, with the bottom ends of each pair of fixed frames connected to the top ends of the two pairs of sliding sleeves respectively. A pair of trusses is fixedly installed between the pair of fixed frames, with a winch fixedly installed on the inner side of each pair of trusses. Baffles are fixedly installed on the upper ends of the two pairs of trusses.

[0008] The beneficial effects of adopting the above-mentioned further solutions are that the main moving frame, through the cooperation of the sliding rod and the sliding sleeve, enables the hydraulic telescopic rod to drive the fixed frame to rise and fall, adapting to different lifting heights; the truss connection of the lifting mechanism to the fixed frame enhances stability; the winch enables the lifting of large columns; the baffle protects the winch, preventing gangue from falling into the equipment or causing injury to the operators; the overall structure is stable, improving lifting efficiency and safety.

[0009] Furthermore, each of the movable frames is rotatably connected to a track wheel, and a speed reducer is fixedly installed on the opposing surfaces of a pair of movable frames.

[0010] The beneficial effects of adopting the above-mentioned further solution are that the track wheels facilitate the movement of the mobile frame along the track, adjust the lifting position, and also facilitate the movement of the equipment inside the shaft; the reducer reduces the speed of the first drive motor and increases the torque, ensuring the smooth operation of the track wheels and improving the controllability of the device's movement.

[0011] Furthermore, the output end of the reducer is connected to one of the track wheels via a transmission connection, and a first drive motor is fixedly installed on the upper end of the reducer, with the output end of the first drive motor being connected to the input end of the reducer via a transmission connection.

[0012] The beneficial effect of adopting the above-mentioned further solution is that the first drive motor drives the track wheel to rotate through the reducer, thereby realizing the automated movement of the mobile frame, reducing manual pushing, and improving the convenience of operation and movement efficiency.

[0013] Furthermore, the safety mechanism includes two pairs of base rods, the bottom ends of the two pairs of base rods are respectively connected to the upper ends of a pair of movable frames, and a sleeve is slidably sleeved on the outer side of each pair of base rods, the top end of the sleeve being fixedly connected to the bottom end of the fixed frame.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the sleeve slides along the bottom rod and rises and falls synchronously with the fixed frame. During the lifting process, the limiting rod can be inserted into the limiting hole to limit the fixed frame and avoid the risk of the fixed frame falling due to the failure of the hydraulic telescopic rod during the lifting process.

[0015] Furthermore, a retainer is fixedly installed at the bottom of each of the opposing surfaces of the sleeve, and a telescopic cylinder is fixedly installed at the center of the retainer. A limit rod is slidably installed inside the telescopic cylinder.

[0016] The beneficial effect of adopting the above-mentioned further solution is that the retainer fixes the telescopic cylinder, and the limiting rod slides inside the telescopic cylinder. It can be inserted into the limiting hole to lock the position of the sleeve, forming a mechanical safety and preventing the fall caused by hydraulic system failure.

[0017] Furthermore, the bottom rod is provided with several limiting holes, and the bottom end of the sleeve is provided with a through hole at one end of the limiting rod. One end of the limiting rod extends through the through hole into the interior and is inserted into the limiting hole.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the limiting rod passes through the through hole and is inserted into the limiting hole, locking the relative position of the sleeve and the bottom rod, providing double insurance during lifting, and improving the safety factor of the device.

[0019] Furthermore, a screw is rotatably connected inside the telescopic cylinder, and a threaded sleeve is inserted into one end of the limiting rod, with the screw and the threaded sleeve being threadedly connected.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the screw and the threaded sleeve are engaged, which converts the rotational motion into the linear motion of the limiting rod, realizes the extension and retraction of the limiting rod, and ensures stable insertion or separation with the limiting hole.

[0021] Furthermore, a second drive motor is fixedly installed at one end of the telescopic cylinder, and the output end of the second drive motor is connected to the screw for transmission.

[0022] The beneficial effect of adopting the above-mentioned further solution is that the second drive motor provides power to the screw, realizing the automatic extension and retraction of the limit rod without manual operation, thereby improving the response speed and ease of use of the safety mechanism.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: The main body of the hydraulic large column lifting device has a movable frame that cooperates with a sliding rod and a sliding sleeve, allowing the hydraulic telescopic rod to drive the fixed frame to rise and fall, adapting to different lifting heights; the truss connection of the lifting mechanism to the fixed frame enhances stability; the winch enables the lifting of the large column; the baffle protects the winch, preventing gangue from falling into the equipment or causing injury to the operators; the overall structure is stable, improving lifting efficiency and safety; the retainer fixes the telescopic cylinder, and the limit rod slides inside the telescopic cylinder, which can be inserted into the limit hole to lock the sleeve position, forming a mechanical safety to prevent the hydraulic system from falling due to failure; the limit rod passes through the through hole and is inserted into the limit hole to lock the relative position of the sleeve and the bottom rod, providing double insurance during lifting and improving the safety factor of the device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the hydraulic large column lifting device disclosed in this utility model embodiment. Figure 1 ;

[0025] Figure 2 This is a three-dimensional structural diagram of the hydraulic large column lifting device disclosed in this utility model embodiment. Figure 2 ;

[0026] Figure 3 This is a three-dimensional structural diagram of the hydraulic large column lifting device disclosed in this utility model embodiment. Figure 3 ;

[0027] Figure 4 This is a three-dimensional structural diagram of the sleeve and bottom rod of the hydraulic large column lifting device disclosed in this embodiment of the utility model;

[0028] Figure 5 This is a front cross-sectional view of the telescopic cylinder and limit rod of the hydraulic large column lifting device disclosed in this utility model embodiment.

[0029] In the diagram: 1. Main body; 101. Moving frame; 102. Track wheel; 103. Reducer; 104. First drive motor; 105. Sliding rod; 106. Sliding sleeve; 107. Hydraulic telescopic rod; 2. Lifting mechanism; 201. Fixed frame; 202. Truss; 203. Winch; 204. Baffle; 3. Safety mechanism; 301. Sleeve; 302. Base rod; 303. Limiting hole; 304. Retainer; 305. Second drive motor; 306. Telescopic cylinder; 307. Screw; 308. Screw sleeve; 309. Limiting rod; 310. Through hole. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a hydraulic large column lifting device, including a main body 1, a lifting mechanism 2, and a safety mechanism 3. The main body 1 includes a pair of movable frames 101, with sliding rods 105 fixedly installed on both sides of the upper end of the movable frames 101. Sliding sleeves 106 are fitted on the outer sides of the sliding rods 105. A hydraulic telescopic rod 107 is hinged to the facing surfaces of each pair of sliding sleeves 106, and the bottom end of the hydraulic telescopic rod 107 is hinged to the upper end of the movable frame 101. The lifting mechanism 2 includes a pair of fixed frames 201, with the bottom ends of the pair of fixed frames 201 respectively connected to the top ends of the two pairs of sliding sleeves 106. The pair of fixed frames 201 are fixedly mounted together. The system is equipped with a pair of trusses 202, with a winch 203 fixedly installed on the inner side of each pair of trusses 202. A baffle 204 is fixedly installed on the upper end of the two pairs of trusses 202. The movable frame 101 of the main body 1 cooperates with the sliding sleeve 106 through the sliding rod 105, so that the hydraulic telescopic rod 107 can drive the fixed frame 201 to rise and fall, adapting to different lifting heights. The trusses 202 of the lifting mechanism 2 connect to the fixed frame 201 to enhance stability. The winch 203 realizes the lifting of large columns. The baffle 204 protects the winch 203, preventing gangue from falling into the equipment or causing injury to the operators. The overall structure is stable, improving lifting efficiency and safety.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1 - Figure 5 Each movable frame 101 is internally connected to a track wheel 102. A reducer 103 is fixedly installed on the opposing surfaces of a pair of movable frames 101. The output end of the reducer 103 is connected to one of the track wheels 102. A first drive motor 104 is fixedly installed on the upper end of the reducer 103. The output end of the first drive motor 104 is connected to the input end of the reducer 103. The track wheel 102 facilitates the movement of the movable frame 101 along the track, adjusts the lifting position, and also facilitates the movement of the equipment inside the shaft. The reducer 103 reduces the speed of the first drive motor 104 and increases the torque, ensuring the smooth operation of the track wheel 102 and improving the controllability of the device movement. The first drive motor 104 drives the track wheel 102 to rotate through the reducer 103, realizing the automated movement of the movable frame 101, reducing manual pushing, and improving the convenience of operation and movement efficiency.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1 - Figure 5The safety mechanism 3 includes two pairs of bottom rods 302. The bottom ends of the two pairs of bottom rods 302 are respectively connected to the upper ends of a pair of movable frames 101. A sleeve 301 is slidably sleeved on the outer side of each pair of bottom rods 302. The top end of the sleeve 301 is fixedly connected to the bottom end of the fixed frame 201. A retainer 304 is fixedly installed on the bottom end of the facing surfaces of each pair of sleeves 301. A telescopic cylinder 306 is fixedly installed at the center of the retainer 304. A limit rod 309 is slidably installed inside the telescopic cylinder 306. Several limit holes 303 are opened on the bottom rods 302. The bottom end of the sleeve 301 is provided with a through hole 310 at one end of the limiting rod 309. One end of the limiting rod 309 extends through the through hole 310 into the interior and is inserted into the limiting hole 303. A screw 307 is rotatably connected inside the telescopic cylinder 306. A threaded sleeve 308 is inserted into one end of the limiting rod 309. The screw 307 and the threaded sleeve 308 are threadedly connected. A second drive motor 305 is fixedly installed at one end of the telescopic cylinder 306. The output end of the second drive motor 305 is connected to the screw 307 for transmission. The sleeve 301 extends along the bottom... The rod 302 slides and rises and falls synchronously with the fixed frame 201. During the lifting process, the limiting rod 309 can be inserted into the limiting hole 303 to limit the fixed frame 201, avoiding the risk of the fixed frame 201 falling due to the failure of the hydraulic telescopic rod 107 during the lifting process. The retainer 304 fixes the telescopic cylinder 306. The limiting rod 309 slides in the telescopic cylinder 306 and can be inserted into the limiting hole 303 to lock the position of the sleeve 301, forming a mechanical safety to prevent the fall caused by the failure of the hydraulic system. The limiting rod 309 passes through the through hole 310. The screw 307 is inserted into the limiting hole 303 to lock the relative position of the sleeve 301 and the bottom rod 302, providing double insurance during lifting and improving the safety factor of the device. The screw 307 and the screw sleeve 308 are threaded together to convert the rotational motion into the linear motion of the limiting rod 309, realizing the extension and retraction of the limiting rod 309 and ensuring stable insertion or separation from the limiting hole 303. The second drive motor 305 provides power to the screw 307 to realize the automatic extension and retraction of the limiting rod 309 without manual operation, improving the response speed and ease of use of the safety mechanism 3.

[0036] Specifically, the working principle of this hydraulic large column lifting device is as follows: During use, the first drive motor 104 drives the track wheel 102 via the reducer 103, causing the moving frame 101 to move along the track laid inside the shaft to the lifting position; the hydraulic telescopic rod 107 extends and retracts, causing the sliding sleeve 106 to rise and fall along the sliding rod 105, and the fixed frame 201 and truss 202 adjust their height accordingly. After the height adjustment is completed, the hydraulic large column is lifted using the hook of the winch 203. The stop installed at the upper end of the truss 202... Plate 204 can protect equipment and personnel; while the fixed frame 201 is lifted to the appropriate position, the sleeve 301 slides synchronously along the bottom rod 302, and the second drive motor 305 drives the screw 307 to rotate, so that the limit rod 309 passes through the through hole 310 and inserts into the corresponding limit hole 303. By using the insertion of the limit rod 309, the relative position of the sleeve 301 and the bottom rod 302 is locked, providing double insurance during lifting, improving the safety factor of the device, and realizing the safe lifting and movement of the large column as a whole.

[0037] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A hydraulic large column lifting device, characterized in that, The system includes a main body (1), a lifting mechanism (2), and a safety mechanism (3). The main body (1) includes a pair of movable frames (101). Slide rods (105) are fixedly installed on both sides of the upper end of the movable frames (101). Slide sleeves (106) are fitted on the outer side of each slide rod (105). A hydraulic telescopic rod (107) is hinged to the facing surface of each pair of slide sleeves (106). The bottom end of the hydraulic telescopic rod (107) is hinged to the upper end of the movable frame (101). The lifting mechanism (2) includes a pair of fixed frames (201). The bottom end of each pair of fixed frames (201) is connected to the top end of the two pairs of slide sleeves (106). A pair of trusses (202) are fixedly installed between the pair of fixed frames (201). A winch (203) is fixedly installed on the inner side of each pair of trusses (202). A baffle (204) is fixedly installed on the upper end of the two pairs of trusses (202).

2. The hydraulic large column lifting device according to claim 1, characterized in that, Each of the movable frames (101) is rotatably connected to a track wheel (102), and a speed reducer (103) is fixedly installed on the opposing surfaces of a pair of movable frames (101).

3. The hydraulic large column lifting device according to claim 2, characterized in that, The output end of the reducer (103) is connected to one of the track wheels (102) in a transmission connection. A first drive motor (104) is fixedly installed on the upper end of the reducer (103), and the output end of the first drive motor (104) is connected to the input end of the reducer (103) in a transmission connection.

4. The hydraulic large column lifting device according to claim 1, characterized in that, The insurance mechanism (3) includes two pairs of bottom rods (302), the bottom ends of the two pairs of bottom rods (302) are respectively connected to the upper ends of a pair of movable frames (101), and a sleeve (301) is slidably sleeved on the outer side of each pair of bottom rods (302), and the top end of the sleeve (301) is fixedly connected to the bottom end of the fixed frame (201).

5. A hydraulic large column lifting device according to claim 4, characterized in that, Each pair of sleeves (301) has a retainer (304) fixedly installed at the bottom of the facing surfaces. A telescopic cylinder (306) is fixedly installed at the center of the retainer (304). A limit rod (309) is slidably installed inside the telescopic cylinder (306).

6. A hydraulic large column lifting device according to claim 5, characterized in that, The bottom rod (302) has several limiting holes (303). The bottom end of the sleeve (301) is provided with a through hole (310) at one end of the limiting rod (309). One end of the limiting rod (309) extends through the through hole (310) into the interior and is inserted into the limiting hole (303).

7. A hydraulic large column lifting device according to claim 6, characterized in that, The telescopic cylinder (306) is rotatably connected to a screw (307), and a threaded sleeve (308) is inserted into one end of the limiting rod (309). The screw (307) and the threaded sleeve (308) are threadedly connected.

8. A hydraulic large column lifting device according to claim 7, characterized in that, A second drive motor (305) is fixedly installed at one end of the telescopic cylinder (306), and the output end of the second drive motor (305) is connected to the screw (307) for transmission.

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