A safe construction elevator

Abstract

The present invention relates to the technical field of construction elevators, and in particular to a safe construction elevator, comprising a guide rail frame, a cage, a transmission device and an anti-collision component. Beneficial effect: The anti-pinch device can effectively prevent the feed door from pinching the staff under the door. Since it does not rely on the electrical structure, power outages will not affect the normal operation of the anti-pinch device, and the failure rate is low and the safety factor is high. The anti-collision component has a buffering effect, avoiding rigid collisions and preventing injuries to people driving vehicles (operating bucket cars); when the impact is large and the cross bar continues to move outward, the second limiting part limits the cross bar, restricting the outward movement of the cross bar, and preventing the vehicle (bucket car) in the elevator from rushing out of the feed door. By providing two safety measures, the buffer and the second limiting part, the safety factor of the feed door is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction elevators, in particular to a safe construction elevator. Background Art

[0002] Construction hoists are tools for vertically transporting materials during construction and are very commonly used. They include bottom fences, guide rails, transmission devices, cages and safety devices. When existing construction hoists are in use, the electric power-assisted vehicle may lose control and break through the feed door, causing a safety accident of falling from a height. If the feed door is simply reinforced, when a collision occurs, the electric power-assisted vehicle collides with the feed door, and the rigid collision may injure the worker driving the vehicle (operating the bucket truck); secondly, the feed door of the existing cage only pays attention to the safety of locking to ensure that the feed door will not open when the construction hoist is working, but ignores the restrictions on the feed door when the construction hoist is not working. If the feed door is accidentally closed, the workers under the door will be pinched and injured, and there is room for improvement. Summary of the Invention

[0003] In order to overcome the technical defects of the prior art, the present invention provides a safe construction elevator, which can prevent the feed door from pinching workers and preventing the feed door from being rushed open, and has a high safety factor.

[0004] The technical solution adopted by the present invention is: a safe construction elevator, including a guide rail frame, a cage and a transmission device, the transmission device is installed on the top of the cage, the transmission device drives the cage to move up and down along the guide rail frame, the cage includes a cage body, a feed door that slides up and down is provided on the outside of the cage body, an anti-collision component is provided on the feed door, the cage body is provided with anti-clamping devices on both sides of the feed door, a trigger plate that can move up and down is provided on the bottom of the cage body near the feed door, the anti-clamping device includes a pulley, a first slider, a curved rod, a connecting rod, a second Slider and limit rod, ropes are fixed at both ends of the trigger plate, the rope transmission is connected to the pulley, the end of the rope is connected to the first slider, the first slider is vertically slidably installed on the hanging cage, a curved rod is hinged on the first slider, the curved rod is rotatably installed on the hanging cage, the other end of the curved rod is hinged with a connecting rod, the other end of the connecting rod is hinged to the second slider, the second slider is horizontally slidably installed on the hanging cage, a limit rod is provided on the inner side of the second slider, the feed door is provided with a limit hole, the limit rod passes through the hanging cage and is clamped in the limit hole.

[0005] Furthermore, a right-angled mounting plate is provided on the outer walls on both sides of the cage body, the mounting plate is vertically installed on the outer wall of the cage body, a first slide groove is vertically provided on the mounting plate, the first slider is slidably installed in the first slide groove, and a second slide groove is horizontally provided on the mounting plate, the second slider is slidably installed in the second slide groove.

[0006] Furthermore, the curved rod includes a first rod body and a second rod body, the first rod body is hinged to the first slider, the second rod body is hinged to the connecting rod, the connection between the first rod body and the second rod body is rotatably mounted on the cage body through a mounting rod, and the length of the second rod body is 2 to 5 times the length of the first rod body.

[0007] Furthermore, a bottom plate is provided at the bottom of the cage body, and a mounting step is provided at a position corresponding to the trigger plate. A reset spring is provided on the mounting step, and the trigger plate is mounted on the bottom plate for vertical movement via the reset spring.

[0008] Furthermore, the anti-collision assembly includes a fixed rod, a buffer, a cross bar and a limiter. Fixed rods are provided at the bottom of both sides of the feed door, buffers are provided on the two fixed rods, a cross bar is installed between the two buffers, and limiters are provided on both sides of the cage. The limiters are provided with a first limiter for limiting the outward movement of the buffer and a second limiter for limiting the outward movement of the cross bar.

[0009] Furthermore, the buffer component includes a shell, a sliding rod, a sliding block, a spring and a connecting rod. The shell is vertically mounted on the fixed rod, the sliding rod is mounted in the shell, there are two sliding blocks, and the two sliding blocks are slidably connected to the sliding rod. The spring is sleeved on the sliding rod between the sliding block and the shell, one end of the spring is connected to the sliding, and the other end of the spring is connected to the shell. The inner sides of the two sliding blocks are hinged with a connecting rod, and the other end of the connecting rod is hinged to the inner side of the cross bar.

[0010] Furthermore, when the feed door is closed, the shell of the buffer member abuts against the first limiting portion of the limiting member.

[0011] Furthermore, the fixing rod is an L-shaped structure.

[0012] Furthermore, the vertical distance between the cross bar and the bottom of the feed door is 30cm-50cm.

[0013] Furthermore, the limiting member is a limiting angle steel, which is vertically installed on both sides of the cage. The limiting angle steel is provided with a first limiting portion for limiting the outward movement of the buffer member and a second limiting portion for limiting the outward movement of the cross bar.

[0014] To sum up, the beneficial effects of the present invention are as follows: when a person stands under the feed door, the trigger plate moves downward under the action of the body's gravity, and the trigger plate triggers the anti-pinch device, which plays a role in limiting the downward movement of the feed door; when the person leaves the top of the trigger plate, under the action of the reset compression spring, the trigger plate moves up, so that the limit rod disengages from the limit hole, and the restriction on the feed door is released, which can effectively prevent the feed door from pinching the staff under the door. Since it does not rely on the electrical structure, power outages will not affect the normal operation of the anti-pinch device, the failure rate is low, and the safety factor is high. The height of the cross bar is higher than that of the wheel center axis to prevent the vehicle from rolling over the cross bar. When the feed door is opened, the mounting rod drives the buffer and the cross bar to move upward synchronously, which will not affect the normal opening of the feed door. When the cross bar is hit and moves outward, it drives the two connecting rods to push the slider, and the slider moves along the slide bar to the upper and lower ends of the shell. At this time, the spring is compressed, which has a buffering effect, avoiding rigid collision and preventing injuries to people driving the vehicle (operating the bucket truck). When the impact is large and the cross bar continues to move outward, the second limit part limits the cross bar to restrict the outward movement of the cross bar to prevent the vehicle in the elevator from rushing out of the feed door. By setting two safety measures, the buffer and the second limit part, the safety factor of the feed door is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The figure is a structural schematic diagram of a safe construction elevator according to the present invention.

[0016] Figure 2 The figure is a structural schematic diagram of a cage of a safety construction elevator according to the present invention.

[0017] Figure 3 The figure is a schematic structural diagram of an anti-pinch device for a safety construction elevator according to the present invention.

[0018] Figure 4 for Figure 3 A partial enlarged view of part A.

[0019] Figure 5 This is a schematic structural diagram of a first chute of a safety construction elevator according to the present invention.

[0020] Figure 6 The figure is a schematic structural diagram of a trigger plate of a safety construction elevator according to the present invention.

[0021] Figure 7 The figure is a schematic structural diagram of a feed door of a safety construction elevator according to the present invention.

[0022] Figure 8 for Figure 7 A partial enlarged view of part B.

[0023] Figure 9 The figure is a schematic structural diagram of a buffer component of a safety construction elevator according to the present invention.

[0024] Figure 10 The figure is a schematic structural diagram of a limiter of a safety construction elevator according to the present invention.

[0025] Description of reference numerals:

[0026] 1. Guide rail frame; 2. Hoisting cage; 21. Cage body; 3. Feed door; 31. Limiting hole; 4. Anti-pinch device; 41. Rope; 42. Pulley; 43. First slider; 44. Curved rod; 441. First rod body; 442. Second rod body; 45. Connecting rod; 46. Second slider; 47. Limiting rod; 48. Mounting rod; 49. Reset spring; 5. Trigger plate; 61. Mounting plate; 62. First slide groove; 63. Second slide groove; 7. Bottom plate; 71. Mounting step; 8. Anti-collision assembly; 81. Fixed rod; 82. Buffer; 821. Shell; 822. Slide rod; 823. Sliding block; 824. Spring; 825. Connecting rod; 83. Cross bar; 84. Limiting member; 841. First limiting part; 842. Second limiting part; 9. Transmission device. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings:

[0028] like Figure 1-10 As shown, this embodiment provides a safe construction elevator, including a guide rail frame 1, a cage 2, a transmission device 9 and an anti-collision component 8.

[0029] In this embodiment, the cage 2 includes a cage body 21, and the transmission device 9 is installed on the top of the cage body 21. The transmission device 9 is equipped with a brake. The transmission device 9 is a prior art and will not be described in detail here. The transmission device 9 drives the cage 2 to move up and down along the guide rail frame 1. Specifically, the transmission device 9 is connected to a gear, and a rack is vertically arranged on the guide rail frame 1. The gear is driven to rotate through the transmission device 9, thereby driving the cage 2 to move up and down along the rack. This part of the structure is a prior art and will not be described in detail here. In addition, upper and lower travel limit switches are provided on the cage body 21, and the upper and lower travel limit switches are cooperated with the sensor on the feed door 3 to realize the upper and lower limits of the closing and opening of the feed door 3. An interlock switch is provided on the feed door 3 to prevent the feed door 3 from accidentally opening during operation. The upper and lower travel limit switches and the interlock switch are all prior art and will not be described in detail here.

[0030] In this embodiment, a feed door 3 that slides up and down to open is provided on the outside of the cage body 21, and an anti-collision component 8 is provided on the feed door 3. The anti-collision component 8 includes a fixed rod 81, a buffer 82, a cross bar 83 and a limiter 84. A fixed rod 81 is provided at the bottom of both sides of the feed door 3, and the fixed rod 81 is an L-shaped structure; a buffer 82 is provided on each of the two fixed rods 81, and the buffer 82 includes a shell 821, a slide rod 822, a sliding block 823, a spring 824 and a connecting rod 825. The shell 821 is vertically installed on the fixed rod 81, and the slide rod 822 is installed in the shell 821. There are two sliding blocks 823, and the two slides are provided. The movable block 823 is slidably connected to the sliding rod 822, and the spring 824 is sleeved on the sliding rod 822 between the sliding block 823 and the shell 821. One end of the spring 824 is connected to the sliding block 823, and the other end of the spring 824 is connected to the shell 821. The inner sides of the two sliding blocks 823 are hinged with a connecting rod 825, and the other end of the connecting rod 825 is hinged to the inner side of the cross bar 83; a cross bar 83 is installed between the two buffer members 82, and limit members 84 are provided on both sides of the interior of the cage 2. The limit member 84 is provided with a first limit portion 841 for limiting the outward movement of the buffer member 82 and a second limit portion 842 for limiting the outward movement of the cross bar 83. When the cross bar 83 is hit and moves outward, it drives the two connecting rods 825 to push the sliding block 823, and the sliding block 823 moves along the sliding rod 822 toward the upper and lower ends of the shell 821. At this time, the spring 824 is compressed, which has a buffering effect, avoiding rigid collision and preventing injuries to the person driving the vehicle (operating the bucket truck).

[0031] In this embodiment, when the feed door 3 is closed, the shell 821 of the buffer 82 abuts against the first limiting portion 841 of the limiting member. The limiting member 84 is a limiting angle steel, which is vertically installed on both sides of the interior of the cage 2. The limiting angle steel is provided with a first limiting portion 841 for limiting the outward movement of the buffer 82 and a second limiting portion 842 for limiting the outward movement of the cross bar 83. When the cross bar 83 moves outward when hit, the impact force on the cross bar 83 is reduced by the buffer 82, slowing down the outward movement of the cross bar 83. When the impact is large and the cross bar 83 continues to move outward, the second limiting portion 842 limits the cross bar 83, limiting the outward movement of the cross bar 83 and preventing the vehicle in the elevator from rushing out of the feed door 3.

[0032] In this embodiment, the vertical distance between the cross bar 83 and the bottom of the feed door 3 is 30 cm, 40 cm or 50 cm. In some other embodiments, the height of the cross bar 83 is set according to the size of the construction vehicle wheel. The height of the cross bar 83 is higher than the height of the wheel center axis to prevent the vehicle from climbing over the cross bar 83.

[0033] In this embodiment, a trigger plate 5 is provided at the bottom of the cage 21, near the feed door 3, and can be moved vertically. Specifically, a base plate 7 is provided at the bottom of the cage 21. A mounting step 71 is provided on the base plate 7 at a position corresponding to the trigger plate 5. A return spring 49 is provided on the mounting step 71. The trigger plate 5 is mounted on the base plate 7 for vertical movement via the return spring 49. When a person stands under the feed door 3, the trigger plate 5 moves downward under the action of the person's weight, thereby triggering the anti-pinch device 4, preventing the person from being pinched by the feed door 3.

[0034] In this embodiment, both sides of the cage body 21 are provided with an anti-pinch device 4, and the anti-pinch device 4 includes a pulley 42, a first slider 43, a bent rod 44, a connecting rod 45, a second slider 46 and a limit rod 47. A rope 41 is fixed to both ends of the trigger plate 5. The rope 41 is transmission-connected to the pulley 42, and the end of the rope 41 is connected to the first slider 43. The first slider 43 is vertically slidably mounted on the cage body 21. A bent rod 44 is hinged on the first slider 43, and the bent rod 44 is rotatably mounted on the cage body 21. The other end of the bent rod 44 is hinged to a connecting rod 45. In this embodiment, the bent rod 44 includes a first rod body 441 and a second rod body 442, the first rod body 441 is hinged to the first slider 43, the second rod body 442 is hinged to the connecting rod 45, and a mounting rod 48 is fixed on the cage body 21. The connection between the first rod body 441 and the second rod body 442 is rotatably mounted on the cage body 21 through the mounting rod 48, and the length of the second rod body 442 is 2 times, 3 times or 5 times the length of the first rod body 441; the other end of the connecting rod 45 is hinged to the second slider 46, and the second slider 46 is horizontally slidably mounted on the cage body 21, and a limiting rod 47 is provided on the inner side of the second slider 46, and the feed door 3 is provided with a limiting hole 31, and the limiting rod 47 passes through the cage 2 and is clamped in the limiting hole 31. When a person stands under the feed door 3, the trigger plate 5 moves downward under the action of the body's gravity, and the trigger plate 5 drives the first slider 43 to move upward through the rope 41. The first slider 43 drives the second slider 46 to slide horizontally to the right through the curved rod 44. The second slider 46 drives the limiting rod 47 to move horizontally synchronously, and then is engaged in the limiting hole 31, which plays a role in limiting the downward movement of the feed door 3. Since it does not rely on electrical structure, the failure rate is low and the safety factor is high.

[0035] In this embodiment, rectangular mounting plates 61 are provided on the outer walls of both sides of the cage body 21. These mounting plates 61 are vertically mounted on the outer walls of the cage body 21, and the anti-pinch device 4 is mounted on the cage body 21 via these mounting plates 61. A first slide groove 62 is vertically provided on the mounting plates 61, and the first slider 43 is slidably mounted within the first slide groove 62. A second slide groove 63 is horizontally provided on the mounting plates 61, and the second slider 46 is slidably mounted within the second slide groove 63.

[0036] When the lift is not in use and a person stands under the feed door 3, the trigger plate 5 moves downward under the action of the body's weight, and the trigger plate 5 drives the first slider 43 to move upward through the rope 41, and the first slider 43 drives the second slider 46 to slide horizontally to the right through the curved rod 44, and the second slider 46 drives the limit rod 47 to move horizontally, and then is engaged in the limit hole 31, which plays the role of limiting the feed door 3 to move downward; when the person leaves the trigger plate 5, under the action of the reset compression spring 49, the trigger plate 5 moves upward, and the first slider 43 slides down along the first slide groove 62 under the action of its own weight, and the first slider 43 drives the second slider 46 to slide horizontally to the left through the curved rod 44, and the second slider 46 drives the limit rod 47 to move horizontally synchronously, so that the limit rod 47 disengages from the limit hole 31, thereby releasing the restriction on the feed door 3.

[0037] When the feed door 3 is closed, the height of the cross bar 83 is higher than the height of the wheel center axis, preventing the vehicle from climbing over the cross bar 83. When the feed door 3 is opened, the fixed rod 81 drives the buffer part 82 and the cross bar 83 to move upward synchronously, which will not affect the normal opening of the feed door 3. When the cross bar 83 is hit and moves outward, it drives the two connecting rods 45 to push the slider, and the slider moves along the slide bar 822 to the upper and lower ends of the shell 821. At this time, the spring 824 is compressed, which has a buffering effect, avoiding rigid collision and preventing injuries to the person driving the vehicle (operating the bucket truck); when the impact is large and the cross bar 83 continues to move outward, the second limiting part 842 limits the cross bar 83, restricting the outward movement of the cross bar 83 to prevent the vehicle in the elevator from rushing out of the feed door 3.

[0038] The above embodiments show and describe the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A safe construction hoist, characterized in that: The lifting mechanism comprises a lifting mechanism, a lifting mechanism, a lifting mechanism, a lifting mechanism of the lifting mechanism, and a lifting mechanism of the lifting mechanism. The lifting mechanism comprises a gear wheel, a gear wheel, a gear train, and a gear train. The gear wheel is connected to the lifting mechanism by a hinged connection between the lifting mechanism and the lifting mechanism. The lifting mechanism comprises a gear wheel, a gear train, and a gear train. The gear train is connected to the lifting mechanism by a hinged connection between the lifting mechanism and the lifting mechanism.

2. A safe construction elevator according to claim 1, characterized in that: A right-angled mounting plate is provided on the outer walls on both sides of the cage body, and the mounting plate is vertically mounted on the outer wall of the cage body. A first slide groove is vertically provided on the mounting plate, and the first slider is slidably mounted in the first slide groove. A second slide groove is horizontally provided on the mounting plate, and the second slider is slidably mounted in the second slide groove.

3. A safe construction elevator according to claim 1, characterized in that: The curved rod includes a first rod body and a second rod body, the first rod body is hinged to the first slider, the second rod body is hinged to the connecting rod, the connection between the first rod body and the second rod body is rotatably mounted on the cage body through a mounting rod, and the length of the second rod body is 2 to 5 times the length of the first rod body.

4. A safe construction elevator according to claim 1, characterized in that: A bottom plate is provided at the bottom of the cage body, and a mounting step is provided at a position of the bottom plate corresponding to the trigger plate. A reset compression spring is provided on the mounting step, and the trigger plate is mounted on the bottom plate for vertical movement via the reset compression spring.

5. A safe construction elevator according to claim 1, characterized in that: The anti-collision assembly includes a fixed rod, a buffer, a cross bar and a limiter. Fixed rods are provided at the bottom of both sides of the feed door, buffers are provided on the two fixed rods, a cross bar is installed between the two buffers, and limiters are provided on both sides of the cage. The limiters are provided with a first limiter for limiting the outward movement of the buffer and a second limiter for limiting the outward movement of the cross bar.

6. A safe construction elevator according to claim 5, characterized in that: The buffer component includes a shell, a sliding rod, a sliding block, a spring and a connecting rod. The shell is vertically installed on the fixed rod, the sliding rod is installed in the shell, there are two sliding blocks, the two sliding blocks are slidably connected to the sliding rod, the spring is sleeved on the sliding rod between the sliding block and the shell, one end of the spring is connected to the sliding, and the other end of the spring is connected to the shell. The inner sides of the two sliding blocks are hinged with a connecting rod, and the other end of the connecting rod is hinged to the inner side of the cross bar.

7. A safe construction elevator according to claim 6, characterized in that: When the feed door is closed, the shell of the buffer member abuts against the first limiting portion of the limiting member.

8. The safety construction elevator according to claim 5, characterized in that: The fixing rod is an L-shaped structure.

9. A safe construction elevator according to claim 5, characterized in that: The vertical distance between the cross bar and the bottom of the feed door is 30cm-50cm.

10. The safety construction elevator according to claim 5, characterized in that: The limiting member is a limiting angle steel, which is vertically installed on both sides of the cage. The limiting angle steel is provided with a first limiting portion for limiting the outward movement of the buffer member and a second limiting portion for limiting the outward movement of the cross bar.

Images