Box-type elevator for mine

Abstract

The utility model belongs to the technical field of hoists, and particularly relates to a mine box type hoister which comprises the ground and a connecting frame arranged above the ground, a driving structure is arranged on the left side of the connecting frame, and an emergency stopping mechanism is arranged on the connecting frame. The emergency stopping mechanism comprises a clamping unit and a stopping unit; the braking unit comprises a chain, a guide rail, clamping teeth, a lift car, a connecting rod, a top plate, a connecting rope, a plate spring, a connecting block, a connecting strip and clamping strips, one end of the chain is fixedly connected to the connecting rope, and the connecting rope downwards extends to the bottom of the plate spring through a through hole in the middle of the top plate and is connected with one ends of the two clamping strips; the connecting rods are fixedly connected to the periphery of the lower surface of the top plate. According to the box type elevator for the mine, when the chain is broken and the car falls, the connecting rope falls downwards under the action of gravity, the pressure of the plate spring disappears, and the clamping strips can be rapidly clamped into the clamping teeth on the inner sides of the guide rails, so that the car is effectively prevented from further falling.

Description

Technical Field

[0001] The utility model relates to the technical field of hoists, in particular to a box-type hoist for mines. Background Art

[0002] Mine hoists are the primary transport equipment used to connect upper and lower positions within a mine. Using a wire rope, they propel a hoist container along a shaft or ramp. They are used to hoist coal, ore, and gangue in vertical and inclined shafts, as well as to raise and lower personnel, materials, tools, and equipment. During single-rope hoisting in mines, accidents involving a passenger falling from a hoist container can cause severe injuries and have a detrimental social impact, representing a serious and potentially fatal accident. Even accidents involving a passenger falling from a hoist container can cause significant damage, resulting in long production downtime and recovery periods, significant economic losses, and serious safety incidents.

[0003] The Chinese patent with announcement number CN220393028U discloses a box-type hoist for mines, including a base plate, a support frame, a motor, a first rotating shaft, a first rotating belt, a fixed shaft, a first gear, an anti-fall mechanism, an iron chain, a second rotating shaft, a first rotating rod, a second rotating rod, a second rotating belt, a third rotating shaft, and a protective shell. The left side of the center inner portion of the base plate is fixedly connected to the support frame by screws, and the top left side of the base plate is fixedly connected to the motor.

[0004] The above-mentioned prior art solution has the following drawbacks: the anti-fall mechanism is designed primarily to restrict the rotation of the first gear by contact with it, thereby indirectly preventing the chain from descending further. However, if the chain breaks, this indirect method may not effectively prevent the car from falling, as the broken chain is no longer controlled by the first gear.

[0005] Therefore, we propose a box-type elevator for mines to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a box-type elevator for mines, so as to solve the problem in the above-mentioned background technology that the car cannot be stopped after the iron chain breaks.

[0007] To achieve the above object, the utility model provides the following technical solution: a box-type hoist for mines, comprising a ground and a connecting frame arranged above the ground, a driving structure being arranged on the left side of the connecting frame, and an emergency stop mechanism being arranged on the connecting frame;

[0008] The emergency stopping mechanism includes a clamping unit and a stopping unit;

[0009] The braking unit includes a chain, a guide rail, a clamping tooth, a car, a connecting rod, a top plate, a connecting rope, a leaf spring, a connecting block, a connecting strip and a clamping strip. One end of the chain is fixedly connected to the connecting rope, and the connecting rope extends downward to the bottom of the leaf spring through the through hole in the middle of the top plate and is connected to one end of the two clamping strips. The connecting rod is fixedly connected to the lower surface of the top plate around, and the bottom of the connecting rod is fixedly connected to the upper surface of the car. The two guide rails are respectively arranged on both sides of the car. The clamping tooth is fixedly connected to the inner side of the guide rail, and the middle part of the clamping strip is movably connected between the two connecting blocks through the connecting strip. The upper surface of the connecting block is fixedly connected to the lower surface of the top plate.

[0010] Preferably, there are multiple latching teeth, and the bottom of the latching strip is triangular. The latching strip is engaged with the latching teeth. The multiple latching teeth increase the contact points between the latching strip and the inner side of the guide rail, thereby improving the stability and reliability of the braking. The design of the latching strip with a triangular bottom is more easily inserted between the latching teeth, ensuring that the car can be quickly and effectively stopped in an emergency.

[0011] Preferably, the clamping unit includes a support seat, a roller, a chuck, a rotating shaft, a slot, a disc, a spring, a block, a connecting frame, a reinforcing rod and a drop slot, the support seat is fixedly connected to the front and rear sides of the upper surface of the connecting frame, the connecting frame is fixedly connected to the upper surface of the ground, the drop slot is opened in the middle of the upper surface of the support seat, the reinforcing rod is fixedly connected to the middle of the support seat, the roller is rotatably connected between the support seats through a rotating shaft, the chuck is fixedly connected to the back of the support seat, the disc is rotatably connected to the middle of the chuck through a rotating shaft, the slot is opened on the outside of the disc, springs are connected on both sides of the disc, a telescopic rod is arranged inside the spring, the other end of the telescopic rod and the spring is fixedly connected to the block, and the clamping design of the block and the slot provides a simple and effective locking mechanism, which can quickly fix the position of the disc when needed, thereby preventing further rotation of the roller.

[0012] Preferably, the clamping block is clamped in the interior of the clamping slot, which helps to maintain the tension of the chain in an emergency and prevent the car from falling accidentally.

[0013] Preferably, the drive structure includes a support, a chain drum, a motor, and a transmission member. The bottom of the support is fixedly connected to the ground, the chain drum is rotatably connected to the support via a connecting shaft, the output end of the motor is connected to the transmission member via a coupling, and the transmission member is connected to the connecting shaft. The drive structure provides an efficient and reliable power transmission method, ensuring the smooth winding and release of the chain on the chain drum. The motor drives the chain drum to rotate through the transmission member, thereby controlling the raising and lowering of the chain and achieving the up and down movement of the car.

[0014] Preferably, the transmission member is composed of a pulley and a belt. The design of the pulley and belt transmission has the advantages of simple structure, easy maintenance, and high transmission efficiency. They can effectively transmit the power of the motor to the chain reel while reducing energy loss and noise generation.

[0015] Preferably, the chain is wound around the chain drum, with one end of the chain passing around the drum and extending below the ground. This ensures that the chain can be smoothly wound and released from the chain drum while providing sufficient length to support the up and down movement of the car. The design of the chain passing around the drum helps maintain the tension and stability of the chain, preventing accidental falling or breaking during the lifting process.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The mine uses a box-type hoist. When the chain breaks and the car falls, the connecting rope drops downward under the action of gravity, and the pressure of the leaf spring disappears. The card strip will quickly get stuck in the card teeth on the inside of the guide rail, thereby effectively preventing the car from falling further.

[0018] 2. The mine uses a box-type hoist. When the drum rotates too fast, the spring expands under the action of centrifugal force, and the block will quickly get into the slot under the action of the spring, thereby locking the position of the drum and preventing it from continuing to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall front structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall side structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the braking structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the clamping structure of the utility model.

[0023] In the figure: 1 ground, 101 support, 102 chain drum, 103 motor, 104 transmission part, 2 chain, 301 support base, 302 roller, 303 chuck, 304 rotating shaft, 305 slot, 306 disc, 307 spring, 308 block, 4 connecting frame, 401 reinforcement rod, 402 drop chute, 5 guide rail, 501 tooth, 6 car, 601 connecting rod, 602 top plate, 701 connecting rope, 702 leaf spring, 703 connecting block, 704 connecting strip, 705 clip. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1-4 The utility model provides a technical solution: a box-type hoist for mines, comprising a ground 1 and a connecting frame 4 arranged above the ground 1, a driving structure is arranged on the left side of the connecting frame 4, and an emergency stop mechanism is arranged on the connecting frame 4;

[0026] The emergency stop mechanism includes a clamping unit and a stop unit;

[0027] The braking unit includes a chain 2, a guide rail 5, a latch 501, a car 6, a connecting rod 601, a top plate 602, a connecting rope 701, a leaf spring 702, a connecting block 703, a connecting bar 704, and a latch bar 705. One end of the chain 2 is fixedly connected to the connecting rope 701, serving as a transmission medium, connecting the drive structure and the car 6 to achieve the lifting and lowering of the cargo. The chain 2 is wound around the chain drum 102, and one end of the chain 2 passes around the roller 302 and extends below the ground 1. The connecting rope 701 extends downward through a through hole in the middle of the top plate 602 to the bottom of the leaf spring 702 and connects to one end of two latch bars 705. The connecting rod 601 is fixedly connected to the lower surface of the top plate 602. The bottom of the connecting rod 601 is fixedly connected to the upper surface of the car 6, connecting the car 6 and the top plate 602, ensuring the stability of the car 6 during the lifting process. Two guide rails 5 are provided on either side of the car 6, providing guidance for the car 6 and ensuring its smooth movement along the predetermined path. A plurality of latches 501 are fixedly connected to the inside of the guide rail 5, and a triangular bottom portion of a clip 705 is secured to the latches 501. The clip 705 cooperates with the clip 705 to achieve the emergency stop function of the car 6. The middle portion of the clip 705 is movably connected between the two connecting blocks 703 via a connecting bar 704, providing a flexible connection point for the clip 705, allowing it to move freely inside the guide rail 5 and engage the latches 501. The upper surface of the connecting block 703 is fixedly connected to the lower surface of the top plate 602, connecting the clip 705 and the top plate 602, ensuring the clip 705's flexible movement inside the guide rail 5.

[0028] The clamping unit includes a support base 301, a roller 302, a chuck 303, a rotating shaft 304, a slot 305, a disc 306, a spring 307, a clamping block 308, a connecting frame 4, a reinforcing rod 401, and a drop chute 402. The support base 301 is fixedly connected to the front and rear sides of the connecting frame 4, which is fixedly connected to the upper surface of the ground 1. The drop chute 402 is located in the middle of the upper surface of the support base 301, and the reinforcing rod 401 is fixedly connected to the middle of the support base 301. The roller 302 is rotatably connected to the support base 301 via the rotating shaft 304. Under normal circumstances, it cooperates with the chain 2 to maintain smooth operation. In abnormal situations, the clamping unit can achieve an emergency stop. The chuck 303 is fixedly connected to the back of the support base 301 and provides rotational support for the disc 306. Disc 306 is rotatably connected to the center of chuck 303 via shaft 304. A slot 305 is located on the outside of disc 306 and cooperates with a block 308 to lock roller 302. Springs 307 are attached to both sides of disc 306, providing elastic force for block 308, ensuring it snaps into slot 305 when needed. A telescopic rod is located within spring 307, and the other ends of the rod and spring 307 are fixedly connected to block 308. Block 308 engages within slot 305 and cooperates with it to lock roller 302, preventing it from rotating further. This maintains tension in chain 2 and prevents accidental drop of car 6.

[0029] The drive structure includes a support 101, a chain drum 102, a motor 103, and a transmission member 104. The bottom of the support 101 is fixedly connected to the ground 1, providing a stable support platform for the chain drum 102. The chain drum 102 is rotatably connected to the support 101 via a connecting shaft. By winding and releasing the chain 2, the elevator car 6 is controlled to rise and fall, achieving vertical transportation of cargo. The output end of the motor 103 is connected to the transmission member 104 via a coupling, providing a power source, which drives the chain drum 102 to rotate. The transmission member 104 is connected to the connecting shaft. The transmission member 104 consists of a pulley and a belt.

[0030] Working principle: The motor 103 serves as a power source and is connected to the transmission member 104 through the output end to provide rotational power for the chain reel 102. Driven by the transmission member 104, the chain reel 102 rotates, thereby winding or releasing the chain 2. The chain 2 serves as a transmission medium, one end of which is fixedly connected to the chain reel 102, and the other end is connected to the car 6 through the connecting rope 701. When the chain reel 102 rotates, the chain 2 is wound or released accordingly, driving the car 6 to rise and fall through the connecting rope 701. Under normal circumstances, the roller 302 cooperates with the chain 2 to maintain its smooth operation. When the car overspeeds, the emergency stop mechanism is activated. At this time, the spring 307 unfolds under the action of centrifugal force, and the block 308 will quickly snap into the slot 305 under the action of the spring 307, thereby locking the position of the roller 302 and preventing it from continuing to rotate.

[0031] When the chain 3 breaks, the connecting rope 701 drops downward under the action of gravity, and the pressure of the leaf spring 702 disappears, and the clamping bar 705 quickly engages with the clamping teeth 501 on the inner side of the guide rail 5, thereby effectively preventing the car 6 from falling further.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A box-type hoist for a mine, comprising a ground (1) and a connecting frame (4) arranged above the ground (1), characterized in that: A driving structure is provided on the left side of the connecting frame (4), and an emergency stop mechanism is provided on the connecting frame (4); The emergency stopping mechanism includes a clamping unit and a stopping unit; The braking unit comprises a chain (2), a guide rail (5), a latching tooth (501), a car (6), a connecting rod (601), a top plate (602), a connecting rope (701), a leaf spring (702), a connecting block (703), a connecting strip (704) and a latching strip (705), one end of the chain (2) being fixedly connected to the connecting rope (701), the connecting rope (701) extending downward through a through hole in the middle of the top plate (602) to the bottom of the leaf spring (702) and connecting to one end of the two latching strips (705). The connecting rod (601) is fixedly connected to the four sides of the lower surface of the top plate (602), the bottom of the connecting rod (601) is fixedly connected to the upper surface of the car (6), the two guide rails (5) are respectively arranged on both sides of the car (6), the clamping teeth (501) are fixedly connected to the inner side of the guide rails (5), the middle part of the clamping strip (705) is movably connected between the two connecting blocks (703) through the connecting strip (704), and the upper surface of the connecting block (703) is fixedly connected to the lower surface of the top plate (602).

2. A box-type hoist for mines according to claim 1, characterized in that: There are a plurality of the latching teeth (501), and the bottom of the latching strip (705) is triangular, and the latching strip (705) is latched on the latching teeth (501).

3. A box-type hoist for mines according to claim 1, characterized in that: The clamping unit comprises a support seat (301), a roller (302), a chuck (303), a rotating shaft (304), a clamping slot (305), a disc (306), a spring (307), a clamping block (308), a connecting frame (4), a reinforcing rod (401) and a drop groove (402), wherein the support seat (301) is fixedly connected to the front and rear sides of the upper surface of the connecting frame (4), the connecting frame (4) is fixedly connected to the upper surface of the ground (1), the drop groove (402) is opened in the middle of the upper surface of the support seat (301), the reinforcing rod (401) is fixedly connected to the support seat (301), and the drop groove (402) is opened in the middle of the upper surface of the support seat (301). The roller (302) is rotatably connected to the support base (301) through a rotating shaft (304), the chuck (303) is fixedly connected to the back of the support base (301), the disc (306) is rotatably connected to the middle of the chuck (303) through the rotating shaft (304), the clamping groove (305) is opened on the outside of the disc (306), and springs (307) are connected to both sides of the disc (306). A telescopic rod is provided inside the spring (307), and the other end of the telescopic rod and the spring (307) is fixedly connected to the clamping block (308).

4. A box-type hoist for mines according to claim 3, characterized in that: The card block (308) is locked inside the card slot (305).

5. The box-type hoist for mines according to claim 1, characterized in that: The driving structure comprises a support (101), a chain drum (102), a motor (103) and a transmission member (104); the bottom of the support (101) is fixedly connected to the ground (1); the chain drum (102) is rotatably connected to the support (101) via a connecting shaft; the output end of the motor (103) is connected to the transmission member (104) via a coupling; and the transmission member (104) is connected to the connecting shaft.

6. The box-type hoist for mines according to claim 1, characterized in that: The chain (2) is wound on the chain drum (102), and one end of the chain (2) passes around the roller (302) and extends below the ground (1).

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