Mortise and tenon type cage bottom of an intelligent construction hoist

Abstract

The present invention relates to a mortise and tenon type cage bottom of an intelligent construction elevator applied to the technical field of elevator related technology. The mortise and tenon connection method is used instead of welding, which not only reduces the production difficulty of the cage bottom and improves the production efficiency, but also greatly reduces the connection nodes of the cage bottom, thereby reducing the safety hazard of deformation and cracking. At the same time, with the setting of a deformation monitoring unit, real-time monitoring of the main beam in the middle part of the cage bottom which is most susceptible to deformation can be achieved. After determining that deformation occurs, when the laser rangefinder moves along an electric slide rail, the data on the laser rangefinder will become smaller later and restore the original larger data earlier, and the shorter the distance between the nodes where the data becomes smaller and restored, the greater the deformation amplitude of the main beam. Based on the data change, the deformation amplitude of the main beam can be monitored, which is convenient for staff to perform maintenance in time, and effectively avoids the safety hazard caused by deformation of the cage bottom during the non-maintenance period.

Description

Technical Field

[0001] The present invention relates to a mortise and tenon type cage bottom, and in particular to a mortise and tenon type cage bottom of an intelligent construction elevator applied to the technical field related to elevators. Background Art

[0002] Construction hoists are indispensable equipment in construction, mainly used to transport construction materials or construction workers, and the cage is a structure used to place construction materials or provide standing space for construction workers.

[0003] The existing focus on construction elevators is generally on cushioning when landing. Through cushioning settings, the safety hazards caused by the elevator landing are reduced. For example, the Chinese patent CN118439477B specification discloses a new type of shaft type construction elevator, and the Chinese patent CN214527501U specification discloses a buffer device for elevators. However, the stability of the cage bottom structure also plays a vital role in the safety of the elevator when in use. The elevators in the prior art often ignore the attention to the cage bottom.

[0004] The cage bottom is the main component of the intelligent construction elevator cage structure. The conventional cage bottom is generally a criss-cross metal mesh structure. The cage bottom in the prior art is formed by aligning vertical and horizontal metal tubes and then welding them, resulting in low production efficiency. In addition, the welding method leads to more nodes on the cage bottom. When the elevator cage is in use, it is generally necessary to load heavy objects. After long-term use, the cage bottom is prone to bending and deformation. In this case, the welded nodes are prone to cracking, posing a major safety hazard. The maintenance of the cage in the prior art depends on regular inspections. When more serious deformation occurs during non-inspection time or between two inspections, it is difficult to detect in time, and thus corresponding maintenance cannot be carried out in time, which also poses certain safety hazards. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the welding method is prone to cracking when the cage bottom is deformed, and it is difficult to detect and maintain the deformation in time, resulting in a major safety hazard.

[0006] In order to solve the above problems, the present invention provides a mortise and tenon type cage bottom of an intelligent construction elevator, comprising an outer frame, the inner wall of the outer frame is fixedly connected with a supporting step, the upper end of the supporting step is placed with a metal substrate, the metal substrate comprises a plurality of evenly distributed main beams, a plurality of angle steels mounted on the plurality of main beams, and two side braces respectively mounted on the left and right upper ends of the plurality of main beams, a plurality of right-angle grooves are cut on the upper ends of the main beams, the angle steels and the side braces are matched with the adjacent right-angle grooves, a deformation monitoring unit is arranged in the outer frame, the deformation monitoring unit comprises two laser rangefinders respectively mounted on two opposite inner walls of the outer frame through electric slide rails, and two variable bars respectively mounted on the outer walls of the two main beams in the middle, the variable bar is connected to the main beam through two positioning rotating columns, the positioning rotating column comprises a fixed connecting pipe fixedly connected to the outer end of the main beam and a movable rotating rod movably penetrating the cross measuring bar and being threadedly connected to the fixed connecting pipe;

[0007] The variable strip includes a transverse measuring strip whose two ends are rotatably connected to two movable rotating rods and an optometry strip fixedly connected to the lower end of the transverse measuring strip. The optometry strip is located between two positioning rotating columns and is symmetrical about the transverse measuring strip. The transverse measuring strip includes two variable rotating rods and a pre-changing section connected between the two variable rotating rods. The optometry strip includes two rotating sections fixedly connected to the two variable rotating rods and a light-changing section fixedly connected between the two rotating sections. The center line of the light-changing section coincides with the center line of the transverse measuring strip.

[0008] In the mortise and tenon type cage bottom of the above-mentioned intelligent construction elevator, mortise and tenon connections are used instead of welding, which effectively reduces the number of connection nodes on the cage bottom and reduces the safety hazards of deformation and cracking. At the same time, after deformation, it can be monitored in real time, which is convenient for staff to carry out maintenance in time, and effectively avoids safety hazards caused by deformation during non-maintenance periods.

[0009] As a further improvement of the present application, the upper surface of the angle steel is flush with the upper surface of the main beam, and the two ends of the angle steel are respectively flush with the outer end surfaces of the two main beams on both sides.

[0010] As a further improvement supplement to the present application, the upper surface of the metal substrate is lower than the upper surface of the outer frame, and the two side support bars are in contact with the inner wall of the outer frame at the same time, the loading plate at the bottom of the cage is located above the metal substrate and in contact with the metal substrate, and the outer frame and the loading plate of the cage are fixedly connected by bolts.

[0011] As a further improvement supplement to the present application, the laser beam emitted by the laser rangefinder is lower than the main beam, and the laser beam is parallel to the angle steel and perpendicular to the main beam. The lower end of the eye test strip extends below the main beam, and the bottom of the main beam is lower than the laser beam.

[0012] As a further improvement and supplement to the present application, an internal monitoring groove is drilled at one end of the two variable rotation rods close to each other, the pre-change section is a tubular structure, both ends of the pre-change section extend into the two internal monitoring grooves respectively and are threadedly connected to the internal monitoring grooves, and the length of the pre-change section located in the internal monitoring groove is not less than half the length of the pre-change section.

[0013] As a further improvement supplement to the present application, the pre-change section is made of elastic material, and the laser transmitter and the laser receiver are respectively installed on the opposite inner walls of the two inner monitoring grooves, and the laser transmitter, the laser receiver, the variable rotating rod and the pre-change section are coaxially arranged.

[0014] As a further improvement of the present application, the follow-up section and the follow-up rotating rod are both hard and fixed structures, the light-changing section is an elastic non-transparent structure, and the length of the light-changing section is 2-5 times the distance between the two follow-up rotating rods.

[0015] As another improvement of the present application, the light-changing section is an elastic hollow transparent structure filled with pure water, and an opening is set at the upper end of the light-changing section, the amplitude of the opening is smaller than the diameter of the pre-changing section, and the light-changing section is completely sealed and wrapped on the outside of the middle part of the cross-measuring strip. The pre-changing section is made of brittle material, and the pre-changing section and the monitoring groove are filled with red liquid.

[0016] In summary, using mortise and tenon connections instead of welding can not only reduce the production difficulty of the cage bottom and improve production efficiency, but also greatly reduce the connection nodes of the cage bottom, thereby reducing the safety hazard of deformation and cracking. At the same time, with the setting of the deformation monitoring unit, real-time monitoring of the main beam in the middle part of the cage bottom which is most prone to deformation can be achieved. After deformation is determined, when the laser rangefinder moves along the electric slide rail, the data on the laser rangefinder will become smaller later and restore to the original larger data earlier. The shorter the distance between the nodes where the data becomes smaller and restored, the greater the deformation amplitude of the main beam. Based on the data changes, the deformation amplitude of the main beam can be monitored, which is convenient for staff to carry out maintenance in time, and effectively avoids the safety hazard caused by deformation of the cage bottom during the non-maintenance period. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a top-down perspective view of the cage bottom of the first embodiment of the present application;

[0018] Figure 2 This is a bottom-up stereoscopic view of the cage bottom of the first embodiment of the present application;

[0019] Figure 3 This is an exploded view of the cage bottom of the first embodiment of the present application;

[0020] Figure 4 A partial exploded view of a metal substrate according to a first embodiment of the present application;

[0021] Figure 5A three-dimensional diagram of the main beam of the first embodiment of the present application;

[0022] Figure 6 A three-dimensional diagram of a compliance strip according to a first embodiment of the present application;

[0023] Figure 7 This is a side view of a main beam with a compliance strip installed according to the first embodiment of the present application;

[0024] Figure 8 A front view of the middle portion of the transverse strip of the first embodiment of the present application;

[0025] Fig. 9 A cross-sectional view of the cross-sectional strip portion of the first embodiment of the present application;

[0026] Fig.10 This is a front view schematic diagram of the compliant strip in the first embodiment of the present application when no deformation occurs;

[0027] Fig.11 This is a front view schematic diagram of the first embodiment of the present application when the variable strip is deformed;

[0028] Fig.12 This is a front view schematic diagram of the compliant strip in the second embodiment of the present application when no deformation occurs;

[0029] Fig.13 This is a schematic diagram of the structure of the middle part of the compliance strip of the second embodiment of the present application when viewed from above.

[0030] Description of the numbers in the figure:

[0031] 1 outer frame, 11 supporting steps, 21 main beam, 201 right-angle groove, 22 angle steel, 23 side support bar, 3 laser rangefinder, 4 variable bar, 41 horizontal measuring bar, 411 variable rotating rod, 412 pre-variation section, 42 eye test bar, 421 variable section, 422 variable light section, 401 laser transmitter, 5 positioning rotating column, 51 fixed connecting pipe, 52 dynamic rotating rod. DETAILED DESCRIPTION

[0032] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0033] The first implementation method:

[0034] Figure 1-2 As shown, a in the figure represents the laser beam emitted by the laser rangefinder 3, a mortise and tenon type cage bottom of an intelligent construction elevator, such as Figure 3-4, including an outer frame 1, the inner wall of the outer frame 1 is fixedly connected to a support step 11, a metal substrate is placed on the upper end of the support step 11, and the metal substrate includes a plurality of evenly distributed main beams 21, a plurality of angle steels 22 mounted on the plurality of main beams 21, and two side stays 23 respectively mounted on the left and right upper ends of the plurality of main beams 21, such as Figure 5 A plurality of right-angle grooves 201 are chiseled at the upper end of the main beam 21, and the angle steel 22 and the side brace 23 are matched with the adjacent right-angle grooves 201. The upper surface of the angle steel 22 is flush with the upper surface of the main beam 21, and the two ends of the angle steel 22 are respectively flush with the outer end surfaces of the two main beams 21 on both sides. By chiseling the right-angle grooves 201, the angle steel 22 and the right-angle grooves 201 are connected by a clamping method similar to the mortise and tenon structure, and replace the welding method of multiple metal pipes relative to each other in the vertical and horizontal directions in the prior art, effectively reducing the cumbersome operation of positioning welding during production and improving production efficiency. At the same time, the main beam 21, the angle steel 22 and the side brace 23 are all integral structures, which reduces the number of connection nodes between each other, thereby effectively reducing the cracking caused by deformation during long-term use in the later stage and improving stability.

[0035] It is worth noting that the upper surface of the metal substrate is lower than the upper surface of the outer frame 1, and the two side support bars 23 are in contact with the inner wall of the outer frame 1 at the same time. The loading plate at the bottom of the cage is located above the metal substrate and in contact with the metal substrate. The outer frame 1 and the loading plate of the cage are fixedly connected by bolts. Since the loading plate has its own gravity, it can suppress multiple angle steels 22 and two side support bars 23, and when used subsequently, heavy objects to be transported will be placed on the loading plate, making it difficult to separate the angle steel 22 and the two side support bars 23 from the main beam 21. Although the metal substrate is connected by mortise and tenon joints and has no other anchoring structure, its connection stability is still very high.

[0036] A deformation monitoring unit is provided in the outer frame 1, and the deformation monitoring unit includes two laser rangefinders 3 respectively installed on two opposite inner walls of the outer frame 1 through electric slide rails and two variable bars 4 respectively installed on the outer walls of the two central main beams 21. The variable bar 4 is connected to the main beam 21 through two positioning rotating columns 5. The positioning rotating column 5 includes a fixed connecting pipe 51 fixedly connected to the outer end of the main beam 21 and a movable rotating rod 52 movably penetrating the cross-measuring bar 41 and threadedly connected to the fixed connecting pipe 51. When in use, the variable bar 4 can be disassembled and assembled through the movable rotating rod 52, so that the variable bar 4 can be removed and reused later.

[0037] like Figure 6The variable strip 4 includes a transverse measuring strip 41 whose two ends are rotatably connected to the two movable rotating rods 52 respectively, and an optometry strip 42 fixedly connected to the lower end of the transverse measuring strip 41. The optometry strip 42 is located between the two positioning rotating columns 5, and the optometry strip 42 is symmetrical about the transverse measuring strip 41. The transverse measuring strip 41 includes two variable rotating rods 411 and a pre-changing section 412 connected between the two variable rotating rods 411. The optometry strip 42 includes two rotating sections 421 fixedly connected to the two variable rotating rods 411 respectively, and a light-changing section 422 fixedly connected between the two rotating sections 421. The midline of the light-changing section 422 coincides with the midline of the transverse measuring strip 41.

[0038] like Figure 7 The laser beam emitted by the laser rangefinder 3 is lower than the main beam 21, and the laser beam is parallel to the angle steel 22 and perpendicular to the main beam 21. The lower end of the eye test strip 42 extends below the main beam 21, and the bottom of the main beam 21 is lower than the laser beam, so that the laser beam emitted by the laser rangefinder 3 can cross multiple adjacent main beams 21 and irradiate the adjacent eye test strip 42, so as to monitor the deformation amplitude of the main beam 21.

[0039] like Figure 8-9 In the figure, c represents the laser beam emitted by the laser transmitter 401. The ends of the two variable rotation rods 411 close to each other are both provided with inner monitoring grooves. The pre-changing section 412 is a tubular structure. The two ends of the pre-changing section 412 extend into the two inner monitoring grooves respectively and are threadedly connected with the inner monitoring grooves. The length of the pre-changing section 412 in the inner monitoring groove is not less than half of the length of the pre-changing section 412, so that the part of the pre-changing section 412 exposed between the two variable rotation rods 411 is not too long, so that the whole is not easy to deform downward on both sides under natural conditions, thereby effectively ensuring that when the corresponding main beam 21 is not deformed, the laser beam emitted by the laser transmitter 401 can be shot to the laser receiver.

[0040] The pre-changing section 412 is made of elastic material. The inner walls of the two inner monitoring grooves are respectively installed with a laser transmitter 401 and a laser receiver. The laser transmitter 401, the laser receiver, the variable rotation rod 411 and the pre-changing section 412 are coaxially arranged. The variable rotation section 421 and the variable rotation rod 411 are both hard and fixed structures. The light-changing section 422 is an elastic non-transparent structure, and the length of the light-changing section 422 is 2-5 times the distance between the two variable rotation rods 411. When in use, when the main beam 21 is initially deformed, due to the variable rotation rods 411 on both sides, the light-changing section 422 is 2-5 times the distance between the two variable rotation rods 411. 11, the variable rotation rod 411 will rotate to a certain extent. At this time, the pre-changing section 412 is bent, and the two variable rotation rods 411 are no longer horizontal, making it difficult for the laser receiver to receive the laser beam emitted by the laser transmitter 401. At this time, it can be determined that the main beam 21 has a certain deformation, so that the deformation of the main beam 21 can be detected at the initial stage of deformation, and the cage bottom deformation can be monitored in real time. After the deformation is determined, the laser rangefinder 3 can be controlled to move as described above to monitor the deformation amplitude of the main beam 21.

[0041] like Figure 10-11 , b in the figure represents the moving trajectory of the laser beam emitted by the laser rangefinder 3. After the deformation is determined, the laser rangefinder 3 can be controlled to move to monitor the deformation amplitude: initially, the laser beam of the laser rangefinder 3 will fall on the inner wall of the supporting step 11 opposite to it. At this time, the data is stable and large. When the laser rangefinder 3 moves along the electric slide rail, when the laser beam reaches the corresponding variable strip 4, the data on the laser rangefinder 3 will suddenly become smaller and maintain a certain distance data unchanged, and then restore the original larger data. When the main beam 21 deforms downward, the optometry strip 42 will deform synchronously with the cross-measurement strip 41, from a horizontal state to a downward curved state in the middle. As the laser rangefinder 3 moves, the data on the laser rangefinder 3 will become smaller later and restore the original larger data earlier. The shorter the distance between the nodes where the data becomes smaller and restored, the greater the deformation amplitude of the main beam 21. Based on the data change, the deformation amplitude of the main beam 21 can be monitored.

[0042] In summary, the use of mortise and tenon connections instead of welding can reduce the production difficulty of the cage bottom and improve production efficiency, while greatly reducing the connection nodes of the cage bottom, thereby reducing the safety hazard of deformation and cracking. At the same time, with the setting of the deformation monitoring unit, real-time monitoring of the main beam 21 in the middle part of the cage bottom that is most prone to deformation can be achieved. After determining that deformation has occurred, when the laser rangefinder 3 moves along the electric slide rail, the data on the laser rangefinder 3 will become smaller later and restore the original larger data earlier. The shorter the distance between the nodes where the data becomes smaller and restored, the greater the deformation amplitude of the main beam 21. Based on the data change, the deformation amplitude of the main beam 21 can be monitored, which is convenient for the staff to carry out maintenance in time, and effectively avoids the safety hazard caused by deformation during the non-maintenance period.

[0043] The second implementation method:

[0044] Based on the first embodiment, this embodiment changes the light-changing section 422 and its related settings, and the rest of the parts remain the same as the first embodiment.

[0045] like Figure 12-13 The light-changing section 422 is an elastic hollow transparent structure filled with pure water, and an opening is set at the upper end of the light-changing section 422. The amplitude of the opening is smaller than the diameter of the pre-changing section 412. The opening is mainly set to facilitate the replacement of the pre-changing section 412. The light-changing section 422 is completely sealed and wrapped on the outside of the middle part of the cross-measuring strip 41. The pre-changing section 412 is made of brittle material, and the pre-changing section 412 and the monitoring groove are filled with red liquid.

[0046] In addition, in the present embodiment, the laser transmitter 401 and the laser receiver can be removed according to actual needs. When deformation occurs, due to the brittleness of the pre-transformation section 412, when the variable strip 4 changes to adapt to the deformation, the pre-transformation section 412 will break, causing the red liquid inside it to overflow into the light-changing section 422 and mix with the pure water. In the present embodiment, after each detection, the laser rangefinder 3 can be adjusted to face the light-changing section 422. When there is no deformation, the laser beam emitted by the laser rangefinder 3 can pass through the light-changing section 422. After deformation, due to the mixing of the red liquid, the laser intensity will be significantly attenuated when the laser beam reaches the light-changing section 422. Based on this, it is also possible to quickly determine that the main beam 21 has deformed, and then adjust the position of the laser rangefinder 3 to the edge of the electric slide rail, and then perform detection according to the method recorded in the first embodiment. The deformation amplitude is monitored based on the data changes of the laser rangefinder 3.

[0047] Compared with the first embodiment, this embodiment does not need to set up a laser transmitter 401 and a laser receiver, but when it is used for the second time, it is necessary to manually replace the pre-transformation section 412 and pure water, etc. Therefore, in the specific implementation, a suitable method can be selected according to actual needs.

[0048] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A mortise and tenon type cage bottom of an intelligent construction hoist, comprising an outer frame (1), the inner wall of the outer frame (1) being fixedly connected with a support step (11), the upper end of the support step (11) being provided with a metal substrate, characterized in that: The metal substrate comprises a plurality of evenly distributed main beams (21), a plurality of angle steels (22) mounted on the plurality of main beams (21), and two side braces (23) respectively mounted on the left and right upper ends of the plurality of main beams (21); a plurality of right-angle grooves (201) are cut on the upper ends of the main beams (21); the angle steels (22) and the side braces (23) are matched with adjacent right-angle grooves (201); a deformation monitoring unit is provided in the outer frame (1); the deformation monitoring unit comprises Two laser rangefinders (3) respectively mounted on two opposite inner walls of the outer frame (1) via electric slide rails, and two variable bars (4) respectively mounted on the outer walls of two central main beams (21), the variable bars (4) being connected to the main beams (21) via two positioning rotating columns (5), the positioning rotating columns (5) comprising a fixed connecting pipe (51) fixedly connected to the outer end of the main beam (21) and a movable rotating rod (52) movably penetrating the cross measuring bar (41) and being threadedly connected to the fixed connecting pipe (51); The variable strip (4) comprises a transverse measuring strip (41) whose two ends are respectively rotatably connected to two movable rotating rods (52) and an optometry strip (42) fixedly connected to the lower end of the transverse measuring strip (41); the optometry strip (42) is located between the two positioning rotating columns (5), and the optometry strip (42) is symmetrical with respect to the transverse measuring strip (41); the transverse measuring strip (41) comprises two variable rotating rods (411) and a pre-changing section (412) connected between the two variable rotating rods (411); the optometry strip (42) comprises two variable rotating sections (421) respectively fixedly connected to the two variable rotating rods (411) and a light-changing section (422) fixedly connected between the two variable rotating sections (421); the midline of the light-changing section (422) coincides with the midline of the transverse measuring strip (41).

2. The mortise and tenon type cage bottom of an intelligent construction hoist according to claim 1, characterized in that: The upper surface of the angle steel (22) is flush with the upper surface of the main beam (21), and the two ends of the angle steel (22) are respectively flush with the outer end surfaces of the two main beams (21) on both sides.

3. The mortise and tenon type cage bottom of an intelligent construction hoist according to claim 1, characterized in that: The upper surface of the metal substrate is lower than the upper surface of the outer frame (1), and the two side support bars (23) are in contact with the inner wall of the outer frame (1) at the same time. The loading plate at the bottom of the cage is located above the metal substrate and contacts the metal substrate. The outer frame (1) is fixedly connected to the loading plate of the cage by bolts.

4. The mortise and tenon type cage bottom of an intelligent construction hoist according to claim 1, characterized in that: The laser beam emitted by the laser rangefinder (3) is lower than the main beam (21), and the laser beam is parallel to the angle steel (22) and perpendicular to the main beam (21); the lower end of the eye test strip (42) extends below the main beam (21), and the bottom of the main beam (21) is lower than the laser beam.

5. The mortise and tenon type cage bottom of the intelligent construction hoist according to claim 4, characterized in that: An inner monitoring groove is formed at one end of the two variable rotation rods (411) close to each other, the pre-changing section (412) is a tubular structure, both ends of the pre-changing section (412) extend into the two inner monitoring grooves respectively and are threadedly connected to the inner monitoring grooves, and the length of the pre-changing section (412) in the inner monitoring groove is not less than half the length of the pre-changing section (412).

6. The mortise and tenon type cage bottom of the intelligent construction hoist according to claim 5, characterized in that: The pre-change section (412) is made of elastic material, and the inner walls opposite to each other of the two inner monitoring grooves are respectively installed with a laser transmitter (401) and a laser receiver, and the laser transmitter (401), the laser receiver, the variable rotation rod (411) and the pre-change section (412) are coaxially arranged.

7. The mortise and tenon type cage bottom of the intelligent construction hoist according to claim 6, characterized in that: The following rotation section (421) and the following variable rotation rod (411) are both hard and fixed structures, the light-changing section (422) is an elastic non-transparent structure, and the length of the light-changing section (422) is 2-5 times the distance between the two following variable rotation rods (411).

8. The mortise and tenon type cage bottom of an intelligent construction hoist according to claim 6, characterized in that: The light-changing section (422) is an elastic hollow transparent structure filled with pure water, and the upper end of the light-changing section (422) is provided with an opening, the amplitude of the opening is smaller than the diameter of the pre-changing section (412), the light-changing section (422) is completely sealed and wrapped around the outer side of the middle part of the cross-measuring strip (41), the pre-changing section (412) is made of a brittle material, and the pre-changing section (412) and the monitoring slot are filled with red liquid.

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