An automatic stop-layer material elevator

Abstract

The present invention discloses an automatic floor-stop material hoist, which relates to the technical field of building material hoisting equipment and includes a base platform, a guide rail frame, a wall-mounted frame, a cage, a transmission mechanism, a cable guide device, an electrical system, and a safety protection system. The present invention utilizes components such as a base platform, a guide rail frame, a wall-mounted frame, and a cage. The cage, under the action of a transmission device, can move upward or downward along the guide rail frame to transport materials. The automatic floor-stop control system facilitates the use of the cage and accurately transports materials to the floor where they are needed. Furthermore, the provision of an anti-fall safety device, a limiter, an overload protection device, and a door interlock greatly enhances the safety of the cage during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of building material lifting equipment, in particular to an automatic floor-stopping material lifter. Background Art

[0002] A material elevator is a fixed-position mechanical conveying equipment, mainly suitable for continuous vertical lifting of powdery, granular and small-piece materials. This type of elevator has few requirements on the type and characteristics of the materials. It can not only lift general powdery and small-granular materials, but also lift materials with high abrasiveness. It has good sealing and less environmental pollution.

[0003] Construction elevators and material hoists are essential vertical transportation equipment in current construction processes and play a vital role in improving construction efficiency. However, their automation levels are currently low, they generally lack leveling devices, and their safety factors are low. They must be operated manually by operators, increasing construction costs and making it difficult to control construction progress. This invention, through multiple safety measures, effectively assists drivers and operators in operating more safely and efficiently, preventing and reducing unforeseen safety risks, and significantly improving construction progress and efficiency. Summary of the Invention

[0004] The present invention provides an automatic layer-stop material hoist, which is equipped with multiple safety measures to improve the safety of the cage during operation and is easy to use, so as to solve the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An automatic stop-level material hoist includes a basic platform, a guide rail frame, a wall-mounted frame, a hoist cage, a transmission mechanism, a cable guide device, an electrical system, and a safety protection system.

[0007] The basic platform is used to fix the guide rail frame;

[0008] The attached wall bracket is used to connect the rail rack and the building;

[0009] The guide rail frame includes several standard sections connected by bolts, and racks are provided on the standard sections;

[0010] A guide wheel is provided on one side of the cage to cooperate with the guide rail frame, and the cage can move along the guide rail frame under the action of the transmission mechanism;

[0011] The transmission mechanism includes a motor arranged in the cage, a differential arranged at the output end of the motor, and a drive gear arranged at the output end of the differential, wherein the drive gear cooperates with the rack;

[0012] The safety protection system includes a limit device, an anti-fall safety device installed on the cage, an overload protection device and a door interlock device.

[0013] Specifically, the limit device includes an upper travel limit switch, a lower travel limit switch, an upper limit switch and a lower limit switch. The upper travel limit switch or the lower travel limit switch can automatically cut off the power supply and stop the hoist when the cage runs to the upper specified position or the lower specified position; the upper limit switch or the lower limit switch can cut off the main power supply and stop the cage when it continues to run after running to the upper specified position or the lower specified position.

[0014] Specifically, the electrical system includes an automatic floor-stop control system and an electrical control box.

[0015] Specifically, the electrical control box includes an upper electrical box arranged in the cage and a lower electrical box arranged on the underframe guardrail of the basic platform. The upper electrical box and the lower electrical box are connected by an accompanying cable.

[0016] Specifically, the anti-fall safety device includes a shell, a limit shaft rotatably installed on the shell, a limit gear sleeved on the limit shaft and meshing with the rack, a centrifugal shaft vertically rotatably installed in the shell, and an anti-fall braking device arranged in the shell and cooperating with the centrifugal shaft, and a gear transmission between the centrifugal shaft and the limit shaft.

[0017] Specifically, the anti-fall braking device includes a ratchet fixedly installed in the shell, a turntable sleeved on the centrifugal shaft, a ratchet hinged on the turntable and an anti-fall mechanism for controlling the position of the ratchet. The ratchet cooperates with the ratchet. When the cage falls, the anti-fall mechanism can drive the ratchet to rest against the ratchet.

[0018] Specifically, the anti-fall mechanism includes a torsion spring 1, a torsion spring 2 and a limit hook arranged on the turntable. A hook is arranged on the ratchet, and the limit hook is rotatably installed on the turntable. Under the action of torsion spring 1, the ratchet can rest against the ratchet wheel; under the action of torsion spring 2, the limit hook can hook the hook; a centrifugal block is arranged on the centrifugal shaft. When the cage falls, the centrifugal block can drive the limit hook to disengage from the hook, so that the ratchet rests on the ratchet wheel under the action of torsion spring 1.

[0019] Specifically, a sliding rod perpendicular to the centrifugal shaft is provided on the centrifugal shaft, the centrifugal block is slidably installed on the sliding rod, a limiting ring is provided on the end of the sliding rod away from the centrifugal shaft, a limiting spring is sleeved on the sliding rod between the limiting ring and the centrifugal block, a shift rod is provided on the limiting hook, and a driving part is provided on the centrifugal block; when the centrifugal block moves along the sliding rod in the direction away from the centrifugal shaft, the driving part can cooperate with the shift rod, so that the limiting hook compresses the torsion spring 2, and the limiting hook disengages from the hook.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By setting up components such as a basic platform, a guide rail frame, a wall frame and a cage, the cage can move up or down along the guide rail frame under the action of a transmission device to transport materials. The automatic floor stop control system can facilitate the use of the cage and accurately transport the materials to the floor where the materials need to be transported. By setting up an anti-fall safety device, a limit device, an overload protection device and a door interlock device, the safety of the cage during operation is greatly improved. By setting up an anti-fall mechanism, when the cage falls and stalls, the ratchet can be pressed against the ratchet under the action of torsion spring 1, and a one-way brake is formed between the ratchet and the ratchet to stop the rotation of the ratchet, that is, to realize the rotation of the limit gear, so that the limit gear and the rack are stuck to achieve the purpose of anti-fall. When the cage can move upward, the ratchet cooperates with the ratchet, and the ratchet will rotate under the action of the ratchet, thereby compressing the torsion spring 1, and the hook is buckled on the limit hook to release the one-way braking state. At this time, the cage will not get stuck when it descends at a normal speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the present invention in use;

[0023] Figure 2 It is a schematic diagram of two hoist cages symmetrically mounted on the guide rail frame of the present invention;

[0024] Figure 3 Schematic diagram of the coordination of the guide rail frame, wall-mounted frame and cage of the present invention;

[0025] Figure 4 for Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 5 Schematic diagram of the internal structure of the anti-fall safety device of the present invention;

[0027] Figure 6 A three-dimensional diagram of the internal structure of the anti-fall safety device of the present invention;

[0028] Figure 7 Schematic diagram of the cooperation between the centrifugal block and the limit hook of the anti-fall safety device of the present invention;

[0029] Figure 8 This is a schematic diagram of the coordination between the ratchet wheel and the ratchet teeth of the anti-fall safety device of the present invention in a normal state;

[0030] Figure 9 It is a schematic diagram of the cooperation between the ratchet wheel and the ratchet teeth in the locked state of the anti-fall safety device of the present invention.

[0031] Figure: 1. Basic platform, 2. Guide rail, 3. Wall bracket, 4. Hoist cage, 5. Motor, 6. Anti-fall safety device, 7. Safety device base, 8. Electrical system, 9. Upper electrical box, 10. Lower electrical box, 11. Underframe guardrail, 12. Buffer spring, 13. Limit block, 14. Guide wheel, 15. Cable drum, 16. Cable guide, 17. Cable arm, 18. Limit gear, 19. Limit Shaft, 20, housing, 21, centrifugal shaft, 22, bevel gear one, 23, bevel gear two, 24, fixed seat, 25, turntable, 26, ratchet, 27, ratchet, 28, limit hook, 29, slide bar, 30, centrifugal block, 31, limit spring, 32, guide rod, 33, hook, 34, lever, 35, driving part, 36, torsion spring two, 37, limit block, 38, torsion spring one, 39, limit ring. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solutions implemented in the present invention in conjunction with the accompanying drawings. 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.

[0033] like Figures 1 to 9 As shown, an embodiment of the present invention provides an automatic floor-stop material hoist, which includes a basic platform 1 (or a pit), a base frame guardrail 11 (including a basic base frame connected to the basic platform 1), a guide rail frame 2, a wall-mounted frame 3, a cage 4, a transmission mechanism, a cable guide device, an electrical system 8 and a safety protection system.

[0034] The foundation platform 1, constructed of pre-buried anchor bolts and reinforced concrete, will bear the full weight of the hoist and its load, and also position and secure the guide rail frame 2. It is cast on-site. The underframe guardrail 11 primarily comprises a base chassis, door frame, center guardrail, side guardrails, front and rear guardrails, buffer springs 12, and a sliding door structure.

[0035] The guide rail frame 2 serves as the guide rail for the upward and downward movement of the cage 4. It is composed of standard sections with a length of 1508 mm connected by high-strength bolts.

[0036] The base chassis is placed on foundation platform 1 and connected with pre-buried bolts. Each guardrail is an 1800mm high expanded steel or wire mesh guardrail. Together with the door frame, it forms a closed rectangle attached to foundation platform 1 and connected to the standard section. The straight-sliding door utilizes an electrical interlock; this interlock stops the hoist cage 4 immediately upon opening the door and cannot be started until the door is closed.

[0037] The standard section is welded from seamless steel pipe, angle steel, and steel pipe, and is fitted with a removable rack secured with three hexagonal screws. The standard section has four main chords, with stoppers welded to the lower ends. A spring pin is located at the lower end of the rack to ensure accurate positioning during installation.

[0038] like Figure 3 As shown, the wall-mounted frame 3 connects the guide rail frame 2 to the building. One end of the wall-mounted frame 3 is bolted to the frame angle steel of the standard section, and the other end is bolted to the embedded part embedded in the building. The length of the wall-mounted frame 3 can be appropriately adjusted within a certain range.

[0039] The top and floor of the cage 4 are constructed of patterned steel plates for a non-slip surface. The top of the cage 4 serves as a working platform during installation and removal of the hoist, so safety railings are installed around the cage. Twelve guide wheels 14 with ball bearings are mounted on the cage 4. These wheels are adjusted to allow the cage 4, driven by the transmission mechanism, to travel along the guide rails 2, carrying the cargo.

[0040] The transmission mechanism, the power source for the hoist, comprises a motor 5, a coupling, a reducer, and a drive gear. These components are mounted on a transmission baseplate within the cage 4. A shock-absorbing washer is placed between the transmission baseplate and the cage 4. The drive gear meshes with the rack on the guide rail frame 2, and the drive gear and the reducer's output shaft are splined. Motor 5 is equipped with an electromagnetic disc brake whose electromagnet automatically tracks the wear of the brake disc, and the braking torque is adjustable.

[0041] The electrical system 8 includes an automatic floor-stop control system and an electrical control box. The electrical control box comprises an upper electrical box 9 located within the cage 4 and a lower electrical box 10 located on the underframe guardrail 11 of the base platform 1. The upper and lower electrical boxes 9, 10 are connected by a traveling cable. A cable guide device, including a cable guide 16, is used to guide the traveling cable. The traveling cable is suspended between a cable boom 17 on the cage 4 and a cable drum 15 on the ground, and is guided and protected by the cable guide 16 mounted on the outer aisle vertical pole.

[0042] The automatic floor-stop control system can use the elevator control system in the prior art to control the floor stop of the cage 4, which is not the focus of the present invention.

[0043] The safety protection system includes a limit device, an anti-fall safety device 6 arranged on the cage 4, an overload protection device and a door interlock device. Among them, the limit device includes an upper limit switch, a lower limit switch, an upper limit switch and a lower limit switch. The top and bottom of the guide rail frame 2 are equipped with limit bumpers 13 and blocks. When they collide with the upper limit switch or the lower limit switch on the cage 4, the cage 4 will stop automatically. The upper limit switch or the lower limit switch can automatically cut off the power supply to stop the hoist when the cage 4 runs to the upper specified position or the lower specified position; the upper limit switch or the lower limit switch can cut off the main power supply when the cage 4 continues to run after running to the upper specified position or the lower specified position, so that the cage 4 stops running.

[0044] The overload protection adopts a pin-type electronic sensor with high sensitivity and good reliability. When the load of cage 4 reaches 95% of the rated load, a warning signal is issued. When the load of cage 4 reaches 110% of the rated load, the control power is automatically cut off and the machine is forced to stop.

[0045] The feeding and discharging doors, cage top door, and bottom fence door of hanging cage 4 are all equipped with door interlock switch (can adopt prior art), and any one door is not closed in place, and hanging cage 4 can not be started.

[0046] The anti-fall safety device 6 includes a shell 20, a limit shaft 19 rotatably mounted on the shell 20, a limit gear 18 sleeved on the limit shaft 19 and meshed with the rack, a centrifugal shaft 21 vertically rotatably mounted in the shell 20, and an anti-fall braking device arranged in the shell 20 and coordinated with the centrifugal shaft 21. The safety device base 7 is fixedly mounted on the cage 4, and the shell 20 is fixed on the safety device base 7. A bevel gear 1 22 is sleeved on the limit shaft 19, and a bevel gear 2 23 is sleeved on the centrifugal shaft 21, and the bevel gear 1 22 is meshed with the bevel gear 2 23. The anti-fall braking device can act on the centrifugal shaft 21. When the cage 4 falls, the anti-fall braking device can brake the centrifugal shaft 21, so that the limit gear 18 and the rack are stuck, thereby preventing the cage 4 from falling.

[0047] The anti-fall braking device includes a ratchet 26, a turntable 25 sleeved on the centrifugal shaft 21, a ratchet 27 hinged on the turntable 25, and an anti-fall mechanism for controlling the position of the ratchet 27. The ratchet 27 cooperates with the ratchet 26. When the cage 4 falls, the anti-fall mechanism can drive the ratchet 27 to abut against the ratchet 26. A fixed seat 24 is provided in the housing 20. The ratchet 26 is fixedly installed in the fixed seat 24. The axis of the ratchet 26 coincides with the axis of the centrifugal shaft 21. The ratchet 26 and the ratchet 27 cooperate not only to have the ability of one-way braking, but also, under the action of the anti-fall mechanism, when the cage 4 moves up and down at normal speed, the forward and reverse rotation of the centrifugal shaft 21 will not cause the ratchet 27 to abut against the ratchet 26, thereby not affecting the normal up and down movement of the cage 4.

[0048] Specifically, the anti-fall mechanism includes a first torsion spring 38 fixed to the turntable 25, a second torsion spring 36 fixed to the turntable 25, and a limit hook 28 rotatably mounted on the turntable 25. A hook 33 is fixed to the side of the ratchet 27 near the limit hook 28. Under the action of the first torsion spring 38, the ratchet 27 can abut against the ratchet 26, thereby performing one-way braking. Under the action of the second torsion spring 36, the limit hook 28 can hook the hook 33. When the limit hook 28 hooks the hook 33, the ratchet 27 and the ratchet 26 are disengaged. At this time, the ratchet 27 will not cooperate with the ratchet 26 for braking, whether rotating forward or reverse. A limit block 37 can be provided on the turntable 25 on one side of the limit hook 28. Under the action of the second torsion spring 36, the limit hook 28 can abut against the limit block 37, thereby accurately controlling the initial position of the limit hook 28. When the hook 33 gradually moves toward the limiting hook 28, the hook 33 can compress the torsion spring 26 of the limiting hook 28, thereby causing the limiting hook 28 to rotate. When the hook 33 is engaged with the limiting hook 28, the torsion spring 26 can press against the limiting hook 28 to ensure that the limiting hook 28 and the hook 33 are not separated.

[0049] A slide rod 29 is provided perpendicular to the centrifugal shaft 21. A centrifugal mass 30 is slidably mounted on the slide rod 29. A limit ring 39 is provided on the end of the slide rod 29 away from the centrifugal shaft 21. A limit spring 31 is mounted on the slide rod 29 between the limit ring 39 and the centrifugal mass 30. The position of the limit ring 39 on the slide rod 29 can be adjusted, thereby varying the degree of compression of the limit spring 31. A guide rod 32 is also fixedly mounted on the centrifugal shaft 21 and parallel to the slide rod 29. The centrifugal mass 30 slidably engages with the guide rod 32, preventing the centrifugal mass 30 from rotating on the slide rod 29.

[0050] A lever 34 is fixed to the limit hook 28, and a driving unit 35 is provided on a side of the centrifugal weight 30 near the limit hook 28. When the cage 4 falls, the relative speed between the cage 4 and the guide rail frame 2 is greater than the normal speed, so the limit gear 18 will rotate faster on the rack, that is, the centrifugal shaft 21 will rotate faster, thereby greatly increasing the centrifugal force on the centrifugal weight 30. The greater centrifugal force enables the centrifugal weight 30 to compress the limit spring 31 and move along the slide bar 29 in a direction away from the centrifugal shaft 21. At this time, the driving unit 35 can cooperate with the lever 34, so that the limit hook 28 compresses the torsion spring 2 36, and the limit hook 28 disengages from the hook 33, thereby allowing the ratchet 27 to rest on the ratchet 26 under the action of the torsion spring 1 38, forming a one-way brake between the ratchet 26 and the ratchet 27, stopping the rotation of the ratchet 27, that is, realizing the rotation of the limit gear 18, so that the limit gear 18 is stuck with the rack, achieving the purpose of preventing the cage from falling.

[0051] When the cage 4 is able to move upward normally, the ratchet 26 engages with the ratchet teeth 27, which rotate under the action of the ratchet 26, compressing the torsion spring 1 38. The hook 33 then engages the limit hook 28, releasing the one-way braking state. At this point, the cage 4 will not get stuck when descending at a normal speed. The anti-fall safety device 6 can be reset when the cage 4 moves upward, releasing the one-way braking state.

[0052] During use: First, create the foundation platform 1, then install the standard sections one by one. Install the wall bracket 3 between the wall and the standard sections to ensure a secure installation. Install a cage 4 on each side of the guide rail frame 2. Install a boom on top of the cage 4, which fits into the socket at the top of the cage 4 to install and remove the standard sections. Once the standard sections are installed, remove the boom to reduce the load on the cage 4. Check the working condition of each component to ensure the hoist is functioning properly. The automatic floor stop control system can then be used to control the up and down movement of the cage 4 to transport materials.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0054] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automatic layer-stop material elevator, characterized in that: It includes a basic platform (1), a guide rail frame (2), a wall frame (3), a cage (4), a transmission mechanism, a cable guide device, an electrical system (8) and a safety protection system. The basic platform (1) is used to fix the guide rail frame (2); The wall-mounted frame (3) is used to connect the guide rail frame (2) and the building; The guide rail frame (2) comprises a plurality of standard sections connected by bolts, and a rack is provided on the standard section; A guide wheel (14) that cooperates with the guide rail frame (2) is provided on one side of the cage (4), and the cage (4) can move along the guide rail frame (2) under the action of a transmission mechanism; The transmission mechanism comprises a motor (5) arranged in the cage (4), a differential arranged at the output end of the motor (5), and a drive gear arranged at the output end of the differential, wherein the drive gear cooperates with the rack; The safety protection system includes a limit device, an anti-fall safety device (6) arranged on the cage (4), an overload protection device and a door interlocking device; The anti-fall safety device (6) comprises a housing (20), a limiting shaft (19) rotatably mounted on the housing (20), a limiting gear (18) sleeved on the limiting shaft (19) and meshing with a rack, a centrifugal shaft (21) vertically rotatably mounted in the housing (20), and an anti-fall braking device arranged in the housing (20) and cooperating with the centrifugal shaft (21), wherein a gear transmission is formed between the centrifugal shaft (21) and the limiting shaft (19); The anti-fall braking device comprises a ratchet (26) fixedly mounted in a housing (20), a turntable (25) sleeved on a centrifugal shaft (21), a ratchet (27) hinged on the turntable (25), and an anti-fall mechanism for controlling the position of the ratchet (27), wherein the ratchet (27) cooperates with the ratchet (26), and when the cage (4) falls, the anti-fall mechanism can drive the ratchet (27) to abut against the ratchet (26); The anti-fall mechanism includes a torsion spring 1 (38), a torsion spring 2 (36) and a limit hook (28) arranged on the turntable (25); a hook (33) is arranged on the ratchet (27); the limit hook (28) is rotatably mounted on the turntable (25); under the action of the torsion spring 1 (38), the ratchet (27) can abut against the ratchet (26); under the action of the torsion spring 2 (36), the limit hook (28) can hook the hook (33); a centrifugal block (30) is arranged on the centrifugal shaft (21); when the cage (4) falls, the centrifugal block (30) can drive the limit hook (28) to disengage from the hook (33), so that the ratchet (27) abuts against the ratchet (26) under the action of the torsion spring 1 (38); The centrifugal shaft (21) is provided with a slide rod (29) perpendicular to the centrifugal shaft (21), the centrifugal block (30) is slidably mounted on the slide rod (29), a limit ring (39) is provided at one end of the slide rod (29) away from the centrifugal shaft (21), a limit spring (31) is sleeved on the slide rod (29) between the limit ring (39) and the centrifugal block (30), a shift rod (34) is provided on the limit hook (28), and a driving part (35) is provided on the centrifugal block (30); when the centrifugal block (30) moves along the slide rod (29) in a direction away from the centrifugal shaft (21), the driving part (35) can cooperate with the shift rod (34), so that the limit hook (28) compresses the torsion spring 2 (36), and the limit hook (28) is separated from the hook (33).

2. The automatic floor-stop material elevator according to claim 1, characterized in that: The limit device includes an upper travel limit switch, a lower travel limit switch, an upper limit switch and a lower limit switch. The upper travel limit switch or the lower travel limit switch can automatically cut off the power supply to stop the hoist when the cage (4) runs to the upper specified position or the lower specified position; the upper limit switch or the lower limit switch can cut off the main power supply when the cage (4) continues to run after running to the upper specified position or the lower specified position, so that the cage (4) stops running.

3. The automatic floor-stop material elevator according to claim 1, characterized in that: The electrical system (8) includes an automatic floor-stop control system and an electrical control box.

4. The automatic floor-stop material elevator according to claim 3, characterized in that: The electrical control box comprises an upper electrical box (9) arranged in the cage (4) and a lower electrical box (10) arranged on the underframe guardrail (11) of the base platform (1), and the upper electrical box (9) and the lower electrical box (10) are connected via a traveling cable.

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