A standard section hoisting mechanism for a construction hoist

Abstract

The present invention discloses a standard section hoisting mechanism for a construction hoist, which includes a rotating seat and a hoisting assembly arranged on the rotating seat. The rotating seat includes a seat body, a rotating shaft arranged at the bottom of the seat body and inserted downward into the cage, and a trigger wheel sleeved on the lower end of the rotating shaft and capable of eccentric rotation along with the rotating shaft. There is an interlock switch in the cage for controlling the on-off of the operation circuit of the construction hoist. The interlock switch is located on one side of the rotating shaft and on the same horizontal plane as the trigger wheel. In the hoisting mechanism of the present invention, by setting the trigger wheel capable of eccentric rotation and the interlock switch, during the eccentric rotation of the trigger wheel, the end face of the trigger wheel close to the interlock switch can respectively contact or disengage from the interlock switch. When the hoisting mechanism works, the trigger wheel can be rotated to a position where it can contact the interlock switch. At this time, the interlock switch is triggered, and the construction hoist will not operate, avoiding potential safety hazards.

Description

Technical Field

[0001] The present invention relates to a standard section hoisting mechanism for a construction elevator. Background Art

[0002] A construction elevator is a construction machine for transporting both people and goods frequently used at a construction site. It mainly functions to vertically transport personnel and materials. It mainly consists of a guide rail frame, a suspended cage, and a driving assembly, etc. The guide rail frame is installed with racks in the vertical direction. The driving mechanism is connected to the suspended cage and drives the suspended cage to move up and down along the racks. The guide rail frame also includes a plurality of interconnected standard sections. When assembling the standard sections, a hoist installed on the suspended cage is used to hoist the standard sections and assemble them while ascending to achieve the final formation of the guide rail frame.

[0003] However, since the suspended cage needs to run and ascend at any time, the operation circuit of the construction elevator is always connected. When hoisting, the lifting tackle on the hoist is likely to interfere with the running construction elevator, and even be involved in the running construction elevator, having great potential safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a standard section hoisting mechanism for a construction elevator.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is:

[0006] A standard section hoisting mechanism for a construction elevator, the construction elevator includes a guide rail frame, a suspended cage that can be lifted and installed on the guide rail frame, and a driving assembly for driving the suspended cage to lift. The hoisting mechanism includes a rotating seat rotatably arranged around the vertical direction at the top of the suspended cage, and a hoisting assembly arranged on the rotating seat. The rotating seat includes a seat body, a rotating shaft arranged at the bottom of the seat body and inserted downward into the suspended cage, and a trigger wheel sleeved on the lower end of the rotating shaft and capable of eccentric rotation along with the rotating shaft. An interlock switch for controlling the on-off of the operation circuit of the construction elevator is arranged in the suspended cage. The interlock switch is located on one side of the rotating shaft and on the same horizontal plane as the trigger wheel;

[0007] The trigger wheel has at least one first position and a second position during its eccentric rotation. When the trigger wheel rotates to the first position, the end of the trigger wheel close to the interlock switch abuts against the interlock switch, the interlock switch is triggered, and the operation circuit is disconnected; when the trigger wheel rotates to the second position, the end of the trigger wheel close to the interlock switch is separated from the interlock switch, the interlock switch is not triggered, and the operation circuit is in an on state.

[0008] Preferably, the circumferential end face of the trigger wheel has at least one recessed portion that is recessed radially inwardly therefrom, and the interlocking switch has a switch body, a connecting rod hinged to the switch body, and a switch wheel rotatably disposed at the end of the connecting rod. When the trigger wheel is in the second position, the switch wheel is received in the groove of the recessed portion; when the trigger wheel is in the first position, at least one of the remaining end faces of the trigger wheel abuts against the switch wheel and presses the switch wheel against the switch body.

[0009] Preferably, the hoisting mechanism has a working state and a non-working state. When the hoisting mechanism is in the working state, the trigger wheel is in the first position; when the hoisting mechanism is in the non-working state, the trigger wheel is in the second position.

[0010] Preferably, the hoisting assembly includes a support rod disposed on the rotating base and extending upward, a suspension rod hinged to the top of the support rod, and a lifting tool installed at one end of the suspension rod. The rotating base further includes a locking member disposed on the base body and having one end inserted into the support rod, a bolt passing through the locking member and threadedly connected to the support rod, and a first nut threadedly connected to the bolt and located on the side of the locking member away from the support rod.

[0011] Further preferably, the locking member includes an integrally formed vertical rod and a horizontal rod. One end of the vertical rod away from the horizontal rod is connected to the base body, and one end of the horizontal rod away from the vertical rod is inserted into the support rod.

[0012] Further preferably, the hoisting mechanism further includes a plurality of hanging rings arranged at intervals along the length direction of the suspension rod at the bottom of the suspension rod, and the lifting tool can be selectively connected to one of the hanging rings.

[0013] Further preferably, the suspension rod includes a first rod body, a second rod body telescopically inserted into the first rod body, a first positioning hole formed in the first rod body, at least two second positioning holes formed in the second rod body, and a positioning pin for sequentially passing through the first positioning hole and one of the second positioning holes.

[0014] Further preferably, the hoisting mechanism further includes a wire reel rotatably connected to the support rod, a wire rope having one end connected to the wire reel and capable of being wound around the wire reel, and a hook disposed at the other end of the wire rope. The rotation axis of the wire reel extends along the horizontal direction and is perpendicular to the length direction of the suspension rod, and the hook is used to connect to the end of the suspension rod where the lifting tool is not installed.

[0015] Further preferably, the hoisting mechanism further includes a wire reel holder disposed on the support rod, and a handle rotatably disposed on the wire reel holder for driving the wire reel to rotate. The wire reel is rotatably disposed on the wire reel holder.

[0016] Further preferably, a driving frame for mounting the driving assembly is provided at the top of the cage. The hoisting mechanism further includes a support frame disposed on the support rod. The support frame extends away from the support rod and overlaps on the driving frame.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: In the hoisting mechanism of the present invention, by providing a trigger wheel and an interlock switch that can rotate eccentrically, during the eccentric rotation of the trigger wheel, the end surface of the trigger wheel close to the interlock switch can respectively contact or disengage from the interlock switch. When the hoisting mechanism is working, the trigger wheel can be rotated to a position where it can contact the interlock switch. At this time, the interlock switch is triggered and the construction elevator will not operate. When the hoisting mechanism is not working and the construction elevator needs to be lifted or lowered, the trigger wheel can be rotated to a position where it disengages from the interlock switch. At this time, the interlock switch is not triggered and the construction elevator can operate normally. In this way, it not only does not affect the lifting and lowering of the construction elevator, but also avoids potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attached Figure 1 is a schematic diagram of the relative position of the hoisting mechanism and the cage in a specific embodiment of the present invention;

[0019] Attached Figure 2 is Figure 1 an enlarged view of part A in

[0020] Attached Figure 3 is a schematic diagram of the triggering principle of the trigger wheel and the interlock switch in a specific embodiment of the present invention;

[0021] Attached Figure 4 is a schematic diagram of the structure of the hoisting mechanism in a specific embodiment of the present invention;

[0022] Attached Figure 5 is Figure 4 an enlarged view of part B in

[0023] In the figure: 1. Rotating base; 1a. Base body; 1b. Rotating shaft; 1c. Trigger wheel; 1c1. Depressed part; 1d. Locking part; 1d1. Vertical rod; 1d2. Horizontal rod; 1e. Bolt; 1f. First nut; 2. Hoisting assembly; 2a. Support rod; 2b. Suspension rod; 2b1. First rod body; 2b2. Second rod body; 2b3. First positioning hole; 2b4. Positioning pin; 2c. Hoisting tackle; 3. Hoisting ring; 4. Wire reel; 5. Wire rope; 6. Hook; 7. Wire-reeling frame; 8. Handle; 9. Support frame; 10. Second nut; 11. Bearing; 12. Sealing ring; 13. Hoop.

[0024] 31. Cage; 31a. Interlocking switch; 31a1. Switch body; 31a2. Connecting rod; 31a3. Switch wheel; 32. Driving assembly; 32a. Driving frame. Specific embodiments

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0026] The present invention relates to an improvement of the hoisting mechanism for standard sections. In the improved hoisting mechanism, by providing a trigger wheel 1c that can rotate eccentrically and an interlocking switch 31a, during the eccentric rotation of the trigger wheel 1c, the end face of the trigger wheel 1c close to the interlocking switch 31a can respectively contact or disengage from the interlocking switch 31a. When the hoisting mechanism is working, the trigger wheel 1c can be rotated to a position where it can contact the interlocking switch 31a. At this time, the interlocking switch 31a is triggered and the construction hoist will not operate. When the hoisting mechanism is not working and the construction hoist needs to be lifted or lowered, the trigger wheel 1c can be rotated to a position where it disengages from the interlocking switch 31a. At this time, the interlocking switch 31a is not triggered and the construction hoist can operate normally. In this way, it not only does not affect the lifting of the construction hoist but also avoids potential safety hazards.

[0027] See Figures 1-5As shown, a standard section hoisting mechanism for a construction hoist is shown, where the construction hoist includes a guide rail frame, a cage 31 that can be lifted and is arranged on the guide rail frame, and a driving assembly 32 for driving the lifting of the cage 31. The hoisting mechanism includes a rotating seat 1 that can rotate around the vertical direction and is arranged on the top of the cage 31, and a hoisting assembly 2 arranged on the rotating seat 1. The rotating seat 1 includes a seat body 1a, a rotating shaft 1b arranged at the bottom of the seat body 1a and inserted downward into the cage 31, and a trigger wheel 1c sleeved on the lower end of the rotating shaft 1b and capable of eccentric rotation along with the rotating shaft 1b. There is an interlock switch 31a in the cage 31 for controlling the on-off of the operation circuit of the construction hoist. The interlock switch 31a is located on one side of the rotating shaft 1b and is on the same horizontal plane as the trigger wheel 1c. Here, an installation hole is provided at the top of the cage 31. The rotating shaft 1b can be inserted into the installation hole for installation and is firmly connected to the top of the cage 31 with bolts 1e and nuts, and waterproof glue is applied to prevent water seepage; a second nut 10 is provided below the trigger wheel 1c for fixing the trigger wheel 1c.

[0028] Combined with Figure 2 and Figure 5 As shown, during the eccentric rotation of the trigger wheel 1c, it has at least one first position and a second position. When the trigger wheel 1c rotates to the first position, the end of the trigger wheel 1c close to the interlock switch 31a abuts against the interlock switch 31a, and the interlock switch 31a is triggered, and the operation circuit is disconnected; when the trigger wheel 1c rotates to the second position, the end of the trigger wheel 1c close to the interlock switch 31a is disengaged from the interlock switch 31a, and the interlock switch 31a is not triggered, and the operation circuit is in an on state.

[0029] In this example, the rotation center of the trigger wheel 1c is inconsistent with its physical center position, enabling it to perform eccentric rotation. During the rotation process, when it is in the first position and the second position, the distance between the end close to the interlock switch 31a and its rotation center is inconsistent. Thus, through the corresponding design of the dimensional parameters of the trigger wheel 1c, it can be made to abut against or disengage from the interlock switch 31a when in the first position and the second position respectively, so as to achieve the interlock control of the operating state of the construction hoist.

[0030] Specifically, combined with Figure 3As shown, the trigger wheel 1c is a cam, and at least one recessed portion 1c1 that is recessed radially inward is provided on the circumferential end surface of the trigger wheel 1c. The interlock switch 31a has a switch body 31a1, a connecting rod 31a2 hinged to the switch body 31a1, and a switch wheel 31a3 rotatably provided at the end of the connecting rod 31a2. When the trigger wheel 1c is in the second position, the switch wheel 31a3 is received in the groove of the recessed portion 1c1; when the trigger wheel 1c is in the first position, at least one of the remaining end surfaces of the trigger wheel 1c abuts against the switch wheel 31a3 and presses the switch wheel 31a3 against the switch body 31a1. Thus, in use, if the cage 31 needs to be lifted or lowered, the trigger wheel 1c is rotated to the second position. At this time, the switch wheel 31a3 is located in the recessed portion 1c1 and does not abut against the trigger wheel 1c, and the operating circuit of the construction elevator remains connected, allowing free lifting and lowering; when the hoisting mechanism needs to work, the trigger wheel 1c is rotated so that the switch wheel 31a3 disengages from the recessed portion 1c1 and abuts against the remaining end surfaces of the trigger wheel 1c. At this time, at least one first position of the trigger wheel 1c can press the switch wheel 31a3 against the switch body 31a1, thereby being able to trigger the interlock switch 31a and disconnect the operating circuit of the construction elevator. Here, the setting of the switch wheel 31a3 enables the conversion of the trigger wheel 1c between the first position and the second position to be smoother.

[0031] Furthermore, the hoisting mechanism has a working state and a non-working state. When the hoisting mechanism is in the working state, the trigger wheel 1c is in the first position; when the hoisting mechanism is in the non-working state, the trigger wheel 1c is in the second position. In this way, the state of the hoisting mechanism is corresponded to the position of the trigger wheel 1c, so that the construction elevator does not operate when the hoisting mechanism is working, and the construction elevator operates normally when the construction elevator is not working, effectively avoiding potential safety hazards.

[0032] In this embodiment, as Figures 1-2 shown, a bearing 11 is also sleeved on the rotating shaft 1b, and a sealing ring 12 is provided between the bearing 11 and the cage 31.

[0033] The hoisting assembly 2 includes a support rod 2a provided on the rotating base 1 and extending upward, a suspension rod 2b hinged to the top of the support rod 2a, and a hoisting tool 2c installed at one end of the suspension rod 2b. Here, the hoisting tool 2c is a chain electric hoist.

[0034] Furthermore, in combination with Figures 1-2 and Figures 4-5As shown, the rotating base 1 further includes a locking member 1d provided on the base body 1a and having one end inserted into the support rod 2a, a bolt 1e passing through the locking member 1d and threadedly connected to the support rod 2a, and a first nut 1f threadedly connected to the bolt 1e and located on the side of the locking member 1d away from the support rod 2a. The locking member 1d includes an integrally formed vertical rod 1d1 and a horizontal rod 1d2. One end of the vertical rod 1d1 away from the horizontal rod 1d2 is connected to the base body 1a, and one end of the horizontal rod 1d2 away from the vertical rod 1d1 is inserted into the support rod 2a. Through the arrangement of the locking member 1d and the bolt 1e, the upright position of the support rod 2a is fixed, ensuring a reliable connection between the support rod 2a and the suspension cage 31.

[0035] In this example, the hoisting mechanism further includes a plurality of lifting rings 3 arranged at intervals along the length direction of the suspension rod 2b at the bottom of the suspension rod 2b, and the lifting tool 2c can be selectively connected to one of the lifting rings 3. In this way, the hoisting mechanism can be applied to the hoisting of standard sections at different distances, with a wider application range.

[0036] As a preferred solution, as Figure 1 and Figure 4 shown, the suspension rod 2b includes a first rod body 2b1, a second rod body 2b2 telescopically inserted into the first rod body 2b1, a first positioning hole 2b3 opened on the first rod body 2b1, at least two second positioning holes opened on the second rod body 2b2, and a positioning pin 2b4 for sequentially passing through the first positioning hole 2b3 and one of the second positioning holes. In this way, the telescoping of the suspension rod 2b can be realized, enabling the hoisting mechanism to be applied to the hoisting of more standard sections at different distances, further expanding the application range. Specifically, through the sliding telescoping of the second rod body 2b2 in the first rod body 2b1, the second positioning holes at different positions can correspond to the first positioning hole 2b3 during the sliding of the second rod body 2b2, and are positioned by the positioning pin 2b4 to realize the adjustment of the length of the suspension rod 2b.

[0037] In this embodiment, the hoisting mechanism further includes a wire reel 7 provided on the support rod 2a, a wire reel 4 rotatably provided on the wire reel 7, a handle 8 rotatably provided on the wire reel 7 for driving the wire reel 4 to rotate, a wire rope 5 having one end connected to the wire reel 4 and capable of being wound around the wire reel 4, and a hook 6 provided at the other end of the wire rope 5. The rotation axis of the wire reel 4 extends along the horizontal direction and is perpendicular to the length direction of the suspension rod 2b. The hook 6 is used to connect to the end of the suspension rod 2b where the lifting tool 2c is not installed. The wire rope 5 here is a steel wire rope, and the handle 8 drives the wire reel 4 to rotate through a conventional transmission mechanism. By rotating the handle 8, the wire reel 4 winds and unwinds the wire rope 5, thereby being able to change the height position of the lifting tool 2c. In cooperation with the telescopic suspension rod 2b, the application range of hoisting is further expanded, making the hoisting matching degree high; at the same time, when the lifting tool 2c is not in use, the suspension rod 2b can also be folded by winding and unwinding the wire rope 5.

[0038] In this embodiment, a driving frame 32a for installing a driving component 32 is provided at the top of the suspension cage 31. The above-mentioned hoisting mechanism further includes a support frame 9 provided on the support rod 2a. The support frame 9 extends away from the support rod 2a and overlaps on the driving frame 32a. In this way, the stability of the rotation of the support rod 2a during hoisting is ensured. Further, a hoop 13 is provided on the support frame 9, and the support frame 9 is fastened to the support rod 2a by bolts 1e nuts. When the support rod 2a needs to rotate, only the nuts need to be loosened, and the support rod 2a can rotate within the hoop 13 without affecting the support of the support frame 9.

[0039] The hoisting mechanism in this example is assembled in a block type during installation, which is light, simple to disassemble and assemble, and convenient for transportation.

[0040] The following specifically elaborates on the installation and working process of this embodiment:

[0041] During installation, first install the rotating seat 1 in the corresponding installation hole of the suspension cage 31, and connect it firmly to the top of the suspension cage 31 with bolts 1e nuts, and apply waterproof glue to prevent water seepage; then install structures such as the wire reel holder 7, the wire reel 4, and the wire rope 5 on the support rod 2a, hinge the assembled suspension rod 2b on the support rod 2a and fold it; then insert the lower end of the support rod 2a into the rotating seat 1 and fix it firmly, install the support frame 9 on the support rod 2a and support it on the driving frame 32a, and hang the lifting tool 2c on the suspension rod 2b; finally, adjust the positions of the trigger wheel 1c and the interlock switch 31a in place inside the suspension cage 31.

[0042] During operation, rotate the support rod 2a so that the lifting tool 2c faces the guide rail frame. At this time, the trigger wheel 1c abuts against the interlock switch 31a, and the construction elevator does not operate. At this time, the hoisting mechanism can be safely operated to realize the hoisting of the standard section; when not working, rotate the support rod 2a so that the end of the suspension rod 2b without the lifting tool 2c faces the guide rail frame. At this time, the trigger wheel 1c is disengaged from the interlock switch 31a, and the construction elevator can operate normally, and there is no risk of the lifting tool 2c being involved in the construction elevator.

[0043] The above embodiments are only for illustrating the technical concept and characteristics of the present invention, and their purpose is to enable those familiar with this technology to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A standard section hoisting mechanism for a construction elevator, the construction elevator comprising a guide rail frame, a cage that is liftable and disposed on the guide rail frame, and a drive assembly for driving the cage to lift, characterized in that: The hoisting mechanism includes a rotating seat rotatably arranged around the vertical direction at the top of the cage, and a hoisting assembly arranged on the rotating seat. The rotating seat includes a seat body, a rotating shaft arranged at the bottom of the seat body and inserted downward into the cage, and a trigger wheel sleeved on the lower end of the rotating shaft and capable of eccentric rotation along with the rotating shaft. An interlock switch for controlling the on-off of the operation circuit of the construction elevator is arranged in the cage. The interlock switch is located on one side of the rotating shaft and on the same horizontal plane as the trigger wheel; During the eccentric rotation of the trigger wheel, it has at least one first position and a second position. When the trigger wheel rotates to the first position, the end of the trigger wheel close to the interlock switch abuts against the interlock switch, the interlock switch is triggered, and the operation circuit is disconnected; when the trigger wheel rotates to the second position, the end of the trigger wheel close to the interlock switch is separated from the interlock switch, the interlock switch is not triggered, and the operation circuit is in an on state.

2. The standard section hoisting mechanism for a construction hoist according to claim 1, characterized in that: The circumferential end face of the trigger wheel has at least one recessed portion recessed radially inward. The interlock switch includes a switch body, a connecting rod hinged to the switch body, and a switch wheel rotatably arranged at the end of the connecting rod. When the trigger wheel is in the second position, the switch wheel is received in the groove of the recessed portion; when the trigger wheel is in the first position, at least one of the remaining end faces of the trigger wheel abuts against the switch wheel and presses the switch wheel against the switch body.

3. The standard section hoisting mechanism for a construction hoist according to claim 1, characterized in that: The hoisting mechanism has a working state and a non-working state. When the hoisting mechanism is in the working state, the trigger wheel is in the first position; when the hoisting mechanism is in the non-working state, the trigger wheel is in the second position.

4. A standard section hoisting mechanism for a construction hoist according to claim 1, characterized in that: The hoisting assembly includes a support rod arranged on the rotating seat and extending upward, a suspension rod hinged to the top of the support rod, and a lifting tool installed at one end of the suspension rod. The rotating seat further includes a locking member arranged on the seat body and having one end inserted into the support rod, a bolt passing through the locking member and threadedly connected to the support rod, and a first nut threadedly connected to the bolt and located on the side of the locking member away from the support rod.

5. The standard section hoisting mechanism for a construction hoist according to claim 4, characterized in that: The locking member includes an integrally formed vertical rod and a horizontal rod. One end of the vertical rod away from the horizontal rod is connected to the seat body, and one end of the horizontal rod away from the vertical rod is inserted into the support rod.

6. The standard section hoisting mechanism for a construction elevator according to claim 4, characterized in that: The hoisting mechanism further includes a plurality of lifting rings arranged at intervals along the length direction of the suspension rod at the bottom of the suspension rod. The lifting tool can be selectively connected to one of the lifting rings.

7. A standard section hoisting mechanism for a construction hoist according to claim 4, characterized in that: The suspension rod includes a first rod body, a second rod body telescopically inserted into the first rod body, a first positioning hole opened on the first rod body, at least two second positioning holes opened on the second rod body, and a positioning pin for sequentially passing through the first positioning hole and one of the second positioning holes.

8. The standard section hoisting mechanism for a construction hoist according to claim 4, characterized in that: The hoisting mechanism further includes a wire reel rotatably connected to the support rod, a wire rope having one end connected to the wire reel and capable of being wound around the wire reel, and a hook provided at the other end of the wire rope. The rotation axis of the wire reel extends along the horizontal direction and is perpendicular to the length direction of the boom. The hook is used to connect to the end of the boom where the lifting appliance is not installed.

9. The standard section hoisting mechanism for a construction hoist according to claim 8, characterized in that: The hoisting mechanism further includes a wire-receiving frame provided on the support rod, and a handle rotatably provided on the wire-receiving frame for driving the wire reel to rotate. The wire reel is rotatably provided on the wire-receiving frame.

10. The standard section hoisting mechanism for a construction hoist according to claim 4, characterized in that: A driving frame for installing the driving assembly is provided on the top of the cage. The hoisting mechanism further includes a support frame provided on the support rod. The support frame extends away from the support rod and is lapped on the driving frame.

Images