Quartzite solidification furnace cage synchronous lifting mechanism

Abstract

The application provides a quartz stone solidification furnace cage synchronous lifting mechanism, which comprises a support frame and a cage. The support frame and the cage are both in a cubic structure. A hydraulic oil cylinder is vertically arranged at each of four top corners of the bottom of the support frame. The extension and retraction of the hydraulic oil cylinder drives the cage to make lifting movement in the support frame. A lifting guide mechanism is arranged on each of the first support columns at the four top corners of the cage. The four groups of lifting guide mechanisms are used to realize the lifting sliding guide of the cage. A lifting synchronous limiting mechanism is arranged between every two oblique opposite corners of the cage. The lifting synchronous limiting mechanism is used to realize the lifting synchronous limiting between the corresponding two oblique opposite corners of the cage. The synchronous rope is always in a tension state during the working process. During the lifting process of the cage, the synchronous rope realizes synchronous tensioning and restraint between the oblique opposite corners of the cage. Therefore, the horizontal lifting of the cage can be ensured. The synchronous rope is simple to erect and has a long service life, so that the persistent and effective use of the solidification furnace can be ensured.

Description

Technical Field

[0001] This invention relates to the field of quartz stone curing furnace processing and manufacturing technology, specifically a synchronous lifting mechanism for the cage of a quartz stone curing furnace. Background Technology

[0002] In the manufacturing process of quartz stone slabs, after the quartz stone raw material is pressed into shape by a forming press, it needs to be heated in a curing furnace to harden the quartz stone slabs, thus achieving the forming of the quartz stone slabs. During the heating and curing process, the slabs need to be conveyed layer by layer between the heating plates in the curing furnace. The heating plates in the curing furnace are generally multi-layered and are lifted and positioned using a cage. The cage is lifted and lowered using four hydraulic cylinders. Due to the inherent characteristics of the hydraulic transmission system, the four hydraulic cylinders cannot achieve precise synchronous movement, resulting in the cage not being able to lift and lower horizontally during the process, and the entire cage having a certain degree of tilt. When the cage tilts, the heating plates also tilt to a certain degree. The tilted heating plates may not be accurately positioned or may not be able to open smoothly to allow the slabs to pass through, and may also cause soft malfunctions in the curing equipment. To address the aforementioned issue of tilting during lifting, a gear and rack are typically installed on each of the four uprights of the cage. The meshing of the gear and rack enables forced synchronous limiting of the cage. While this method can alleviate the tilting problem, it cannot fundamentally solve it. Furthermore, prolonged use can lead to gear or rack tooth breakage and damage, as well as excessive bearing load and bearing failure. Summary of the Invention

[0003] The purpose of this invention is to provide a synchronous lifting mechanism for a quartz curing furnace cage. The synchronous rope is always taut during operation, and during the lifting of the cage, the diagonally opposite sides of the cage are synchronously tensioned and restrained. Therefore, the horizontal lifting of the cage can be guaranteed. The synchronous rope is simple to set up and has a long service life, thus ensuring the long-term effective use of the curing furnace.

[0004] The technical solution adopted by this invention to solve its technical problem is: a synchronous lifting mechanism for a quartz stone curing furnace cage, including a support frame and a cage. Both the support frame and the cage are cubic structures. A hydraulic cylinder is vertically installed at each of the four apex corners of the bottom of the support frame. The extension and retraction of the hydraulic cylinders drives the cage to move up and down within the support frame. The feature is that a lifting guide mechanism is installed on the first support column at each of the four apex corners of the cage. The four sets of lifting guide mechanisms are used to realize the lifting and sliding guidance of the cage. A synchronous lifting limit mechanism is installed between each pair of diagonally opposite corners of the cage. The synchronous lifting limit mechanism is used to realize the synchronous lifting limit between the corresponding two diagonally opposite corners of the cage.

[0005] Preferably, a second support column is provided at each of the four top corners of the support frame, and the lifting guide mechanism includes an upper sliding guide wheel and a lower sliding guide wheel. The upper sliding guide wheel is provided on the upper part of the corresponding first support column, and the lower sliding guide wheel is provided on the lower part of the corresponding first support column. The upper sliding guide wheel and the lower sliding guide wheel are respectively locked on the corresponding second support column.

[0006] Furthermore, both the upper and lower sliding guide wheels are V-groove guide rollers, the second support column is a square tube, and the upper and lower sliding guide wheels are engaged on the corresponding edges of the second support column.

[0007] Furthermore, the lifting synchronous limiting mechanism includes two first synchronous ropes. A first guide wheel is provided on the upper part of the first support column to guide the first synchronous ropes. A second guide wheel and a third guide wheel are respectively provided on the bottom and upper part of the second support column to guide the first synchronous ropes. The lower ends of the two first synchronous ropes are fixedly connected to two diagonally opposite apex corners of the bottom of the cage. The upper ends of the first synchronous ropes pass through the second guide wheel, the third guide wheel and the first guide wheel diagonally corresponding to their lower fixed points in sequence before being fixedly connected to the upper part of the cage. The first synchronous ropes are always in a taut state.

[0008] Furthermore, a first tension threaded rod is fixedly installed at the upper end of the first synchronous rope, and a first fixed seat corresponding to the first tension threaded rod is provided on the upper part of the cage. The first tension threaded rod is fixed to a vertical plate of the first fixed seat by two first nuts.

[0009] Furthermore, a first auxiliary guide wheel is provided below the connection point between the lower end of the first synchronous rope and the bottom corner of the cage. The upper end of the first synchronous rope passes around the corresponding first auxiliary guide wheel and then passes around the corresponding second guide wheel, third guide wheel and first guide wheel in sequence.

[0010] Preferably, the lifting synchronization limiting mechanism includes a second synchronization rope. A fourth guide wheel is provided on the upper part of the first support column to guide the second synchronization rope according to the guiding requirements. A fifth guide wheel and a sixth guide wheel are provided on the bottom and upper parts of the second support column to guide the second synchronization rope according to the guiding requirements. The lower end of the second synchronization rope is fixedly connected to one of the bottom corners of the cage. The upper end of the second synchronization rope passes through the fifth guide wheel, the sixth guide wheel and the fourth guide wheel in sequence and is fixedly connected to the upper part of the cage. The second synchronization rope is always in a taut state.

[0011] Furthermore, a second tensioning threaded rod is fixedly installed at the upper end of the second synchronous rope, and a second fixed seat corresponding to the second tensioning threaded rod is provided on the upper part of the cage. The second tensioning threaded rod is fixed to a vertical plate of the second fixed seat by two second nuts.

[0012] Furthermore, a second auxiliary guide wheel is provided below the connection point between the lower end of the second synchronous rope and the bottom corner of the cage. The upper end of the second synchronous rope passes around the corresponding second auxiliary guide wheel and then passes around the corresponding fifth guide wheel, sixth guide wheel and fourth guide wheel in sequence.

[0013] The beneficial effects of this invention are: the invention has a simple structure and is easy to manufacture; the synchronous rope is always in a taut state, which is equivalent to realizing a "rigid" connection between the diagonally opposite corners of the cage using the synchronous rope. When one corner of the cage is driven upward by the hydraulic cylinder, the other corner diagonally opposite to this corner is subjected to an upward pulling force through the synchronous rope, thus effectively ensuring that the diagonally opposite corners of the cage maintain synchronous lifting and lowering. When two synchronous ropes are set between each pair of diagonally opposite corners of the cage, it is effectively ensured that each corner of the cage is subjected to the lifting force of a hydraulic cylinder and the pulling force transmitted from the diagonally opposite corners through the synchronous rope, thus effectively ensuring that the four corners of the cage can basically lift and lower synchronously, thereby realizing the horizontal lifting and lowering of the cage, which in turn facilitates the subsequent opening and positioning of the heating plate. The tension of the synchronous rope can be adjusted by tightening the threaded rod at the upper end, which facilitates the adjustment of the tension of the synchronous rope. The guide wheels on the cage are all set at the top corners of the cage to ensure that the four top corners of the cage are pulled up during the ascent, thus ensuring the overall force of the cage is balanced, which in turn facilitates the horizontal ascent and descent of the cage. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the first specific embodiment of the present invention; Figure 2 This is a top view of the structure of the first specific embodiment of the present invention; Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 for Figure 1 Enlarged view at point B in the middle; Figure 5 for Figure 2 Enlarged view at point C; Figure 6 This is a top view of the structure of a second specific embodiment of the present invention; In the diagram: 1 Support frame, 11 Second support column, 2 Hoist cage, 21 First support column, 22 Upper sliding guide wheel, 23 Lower sliding guide wheel, 3 Hydraulic cylinder, 41 First synchronous rope, 42 First guide wheel, 43 Second guide wheel, 44 Third guide wheel, 45 First auxiliary guide wheel, 51 First tension threaded rod, 511 First nut, 52 First fixed seat, 61 Second synchronous rope, 62 Fourth guide wheel, 63 Sixth guide wheel, 71 Second tension threaded rod, 711 Second nut, 72 Second fixed seat, 8 Heating plate. Detailed Implementation

[0016] The following will describe specific embodiments and appendices. Figure 1-6 The technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only some preferred embodiments of the present invention, and not all embodiments. Those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] This invention provides a synchronous lifting mechanism for the cage of a quartz stone curing furnace (such as...). Figure 1 As shown, the structure includes a support frame 1 and a cage 2. Both the support frame 1 and the cage 2 are cubic structures. At each of the four apex corners of the support frame 1, a vertically arranged second support column 11 is formed, constituting the main support body of the support frame 1. At each of the four apex corners of the cage 2, a first support column 21 is formed, with heating plates 8 arranged vertically between the four first support columns 21. At each of the four apex corners of the bottom of the support frame 1, a hydraulic cylinder 3 is vertically installed. The extension and retraction of the hydraulic cylinder 3 causes the cage 2 to move up and down within the support frame 1. Specifically, the bottom of the hydraulic cylinder 3 is fixed to the bottom of the support frame 1, and the hydraulic oil... The top of the piston rod of cylinder 3 is fixedly connected to the bottom of the upper corner of the corresponding cage 2. A lifting guide mechanism is set on the first support column 21 at each of the four corners of the cage 2. The four sets of lifting guide mechanisms are used to realize the lifting and sliding guidance of the cage 2. That is, when the cage 2 is driven to rise by the hydraulic cylinder 3 and falls under its own gravity, the lifting guide mechanism is used to realize the lifting and sliding guidance of the cage 2. A lifting synchronization limit mechanism is set between each pair of diagonal corners of the cage 2. That is, the lifting synchronization limit mechanism is distributed along the diagonal direction of the cage 2. The lifting synchronization limit mechanism is used to realize the lifting synchronization limit between the corresponding two diagonal corners of the cage 2.

[0018] Based on the above embodiments, the specific implementation of the lifting guide mechanism is as follows: The lifting guide mechanism includes an upper sliding guide wheel 22 and a lower sliding guide wheel 23. The upper sliding guide wheel 22 is disposed on the upper part of the corresponding first support column 21, and the lower sliding guide wheel 23 is disposed on the lower part of the corresponding first support column 21. The upper sliding guide wheel 22 and the lower sliding guide wheel 23 are respectively engaged on the corresponding second support column 11. In order to improve the guiding stability of the upper sliding guide wheel 22 and the lower sliding guide wheel 23, both the upper sliding guide wheel 22 and the lower sliding guide wheel 23 are V-groove guide rollers. The second support column 11 is a square tube, and the upper sliding guide wheel 22 and the lower sliding guide wheel 23 are engaged on the corresponding edges of the second support column 11.

[0019] In this specific embodiment, based on the above embodiments, two specific embodiments of the lifting synchronous limiting mechanism are provided. The specific implementation of the first specific embodiment of the lifting synchronous limiting mechanism is as follows: Each set of the lifting synchronous limiting mechanism includes two first synchronous ropes 41, that is, the cage 2 uses four first synchronous ropes 41 simultaneously to achieve synchronous lifting and limiting. In practical applications, the synchronous ropes 41 can be steel wire ropes. A first guide wheel 42 is provided on the upper part of the first support column 21 to guide the first synchronous ropes 41. A second guide wheel 43 and a third guide wheel 44 are respectively provided on the bottom and upper part of the second support column 11 to guide the first synchronous ropes 41. The lower ends of the two first synchronous ropes 41 are fixedly connected to the two diagonally opposite apex corners of the bottom of the cage 2. The upper end of the first synchronous rope 41 passes through the second guide wheel 43, the third guide wheel 44 and the first guide wheel 42 diagonally corresponding to its lower end fixing point in sequence and is fixedly connected to the upper part of the cage 2. The first synchronous ropes 41 are always taut. To clearly illustrate the installation principle of the first synchronous rope 41, in the top view of the entire mechanism, the four apexes are named A-angle, B-angle, C-angle, and D-angle. One end of the first synchronous rope 41 is fixedly connected to the bottom of the bottom apex of the cage 2 located at apex A, and the other end is pulled diagonally to apex D. At apex D, it passes through the bottom of the corresponding second guide wheel 43 and enters the corresponding second support column 11. After passing through the second support column 11, it then winds around the second support column 11. The upper part of the corresponding third guide wheel 44 is set on the upper part of the support column 11. Then, the lower part of the first guide wheel 42 set at the upper corner of the cage 2 at the top corner of the pipe D is pulled down, and after passing through, it is fixed to the upper part of the cage 2, thus completing the threading of this first synchronous rope 41. The remaining three first synchronous ropes 41 are threaded by selecting the bottom corners of the cage 2 located at the top corners of B, C and D as the lower fixing points. The threading principle of the remaining ropes is the same as the threading principle of the first first synchronous rope 41 mentioned above, and will not be described here. When the first synchronous rope 41 is in a taut state, it can achieve a synchronous limiting effect between the bottom corner of the cage 2 and the upper corner diagonally opposite it. That is, when the bottom corner of the cage 2 rises, the upper corner diagonally opposite to the bottom corner is subjected to a tension force through the tensioning connection of the corresponding first synchronous rope 41, thereby ensuring the synchronous lifting and lowering of the cage 2 diagonally opposite each other. By using four first synchronous ropes 41, the force balance of the cage 2 diagonally opposite each other can be improved, thereby ensuring the synchronous lifting and lowering of the cage 2.The specific process of the first synchronous rope 41 transmitting tension is as follows: The hydraulic cylinder 3 located at the top corner A extends. The extension of the hydraulic cylinder causes the top corner of the cage 2 located at the top corner A to rise. After the top corner of the cage 2 at the top corner A rises, it pulls the lower end of the first synchronous rope 41 to rise synchronously. Since the first synchronous rope 41 is in a taut state, when the lower end of the first synchronous rope 41 rises, it directly drives the upper end of the first synchronous rope 41 to also rise. The rise of the upper end of the first synchronous rope 41 directly pulls the upper top corner of the cage 2 at the top corner D to rise. Thus, the first synchronous rope 41 can be used to achieve the synchronous rise of the two diagonally opposite top corners of the cage 2 at the top corners A and D.

[0020] Based on the above embodiments, in order to facilitate the tension adjustment of the first synchronous rope 41, a first tension threaded rod 51 is fixedly installed at the upper end of the first synchronous rope 41. A first fixed seat 52 corresponding to the first tension threaded rod 51 is provided on the upper part of the cage 2. The first tension threaded rod 51 is fixed to a vertical plate of the first fixed seat 52 by two first nuts 511. When the first tension threaded rod 51 is inserted into the vertical plate, the two first nuts 511 are located on both sides of the vertical plate. By rotating the first nuts 511 away from the end of the first synchronous rope 41, the first synchronous rope 41 can be tightened. After tightening, the first tension threaded rod 51 is fixed on the vertical plate by the two first nuts 511. Furthermore, to facilitate the turning of the first synchronous rope 41 below the bottom corner of the cage 2 so that it can smoothly enter the corresponding second guide wheel 43, a first auxiliary guide wheel 45 is provided below the connection between the lower end of the first synchronous rope 41 and the bottom corner of the cage 2. The upper end of the first synchronous rope 41 passes around the corresponding first auxiliary guide wheel 45 and then passes around the corresponding second guide wheel 43, third guide wheel 44 and first guide wheel 42 in sequence.

[0021] The second specific embodiment of the lifting synchronous limiting mechanism is as follows: The lifting synchronous limiting mechanism includes a second synchronous rope 61, that is, the cage 2 uses two second synchronous ropes 61 simultaneously to achieve synchronous lifting and limiting. A fourth guide wheel 62 is provided on the upper part of the first support column 21 according to guiding requirements to guide the second synchronous rope 61. Here, "according to guiding requirements" means that since the cage 2 uses two second synchronous ropes 61 to achieve synchronous limiting, only two fourth guide wheels 62 are needed for guidance. Therefore, two of the four first support columns 21 do not need to have fourth guide wheels 62 on their upper parts. The bottom and top of the second support column 21 are provided according to guiding requirements. The system requires the installation of a fifth guide wheel and a sixth guide wheel 63 to guide the second synchronous rope 61. The phrase "set according to guidance requirements" here means that since the cage 2 uses two second synchronous ropes 61 for synchronous positioning, only two sets of fifth and sixth guide wheels 63 are needed. Therefore, two of the four second support columns 11 do not require the installation of fifth and sixth guide wheels 63. The lower end of the second synchronous rope 61 is fixedly connected to one of the bottom corners of the cage 2. The upper end of the second synchronous rope 61 passes sequentially around the fifth guide wheel, the sixth guide wheel 63, and the fourth guide wheel 62 before being fixedly connected to the upper part of the cage 2. The second synchronous rope 61 is always in a taut state. To clearly illustrate the installation principle of the second synchronous rope 61, in the top view of the entire mechanism, the four apexes are named E-apexes, F-apexes, G-apexes, and H-apexes, respectively. One end of the second synchronous rope 61 is fixedly connected to the bottom of the bottom apex of the cage 2 located at G-apexes, and the other end is pulled diagonally to F-apexes. At F-apexes, it passes through the bottom of the corresponding fifth guide wheel and enters the corresponding second support column 11. After passing through the second support column 11, it then... The rope is wound around to the upper part of the corresponding sixth guide wheel 63 set on the upper part of the second support column 11. Then, the lower part of the fourth guide wheel 62 set on the upper corner of the cage 2 at the top corner of the pipe F is pulled down, and after passing through, it is fixed to the upper part of the cage 2, thus completing the threading of this second synchronous rope 61. The lower end of the remaining second synchronous rope 61 is fixedly connected to the bottom of the bottom corner of the cage 2 at the top corner H. The remaining threading principle can refer to the threading principle of the second synchronous rope 61 described above, and will not be described here. The second synchronous rope 61 is in a taut state, which can realize a synchronous limiting function between the bottom top corner of the cage 2 and the upper top corner diagonally opposite it. That is, when the bottom top corner of the cage 2 rises, the tensioning connection of the corresponding second synchronous rope 61 can make the upper top corner diagonally opposite to the bottom top corner receive a tension force, thereby ensuring the synchronous lifting and lowering of the cage 2 diagonally opposite each other. By using two second synchronous ropes 61, the force balance of the cage 2 diagonally opposite each other can be improved, thereby ensuring the synchronous lifting and lowering of the cage 2.The process of the second synchronous rope 61 transmitting tension is the same as that of the first synchronous rope 41, and will not be described here.

[0022] Based on the above embodiments, in order to facilitate the tension adjustment of the second synchronous rope 61, a second tension threaded rod 71 is fixedly installed at the upper end of the second synchronous rope 61. A second fixed seat 72 corresponding to the second tension threaded rod 71 is provided on the upper part of the cage 2. The second tension threaded rod 71 is fixed to a vertical plate of the second fixed seat 72 by two second nuts 711. When the second tension threaded rod 71 is inserted into the vertical plate, the two second nuts 711 are located on both sides of the vertical plate. By rotating the second nuts 711 away from the end of the second synchronous rope 61, the second synchronous rope 61 can be tensioned. After tensioning, the second tension threaded rod 71 is fixed on the vertical plate by the two second nuts 711. Furthermore, to facilitate the turning of the second synchronous rope 61 below the bottom corner of the cage 2 so that it can smoothly enter the corresponding fifth guide wheel, a second auxiliary guide wheel is provided below the connection between the lower end of the second synchronous rope 61 and the bottom corner of the cage 2. The upper end of the second synchronous rope 61 passes around the corresponding first auxiliary guide wheel 45 and then passes around the corresponding fifth guide wheel, sixth guide wheel 63 and fourth guide wheel 62 in sequence.

[0023] In this invention, "upper" and "lower" are relative positions used for the convenience of describing positional relationships, and therefore should not be interpreted as absolute positions or as limitations on the scope of protection.

[0024] Except for the technical features described in the specification, all other technologies are known to those skilled in the art.

[0025] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. For those skilled in the art, several improvements and modifications can be made without departing from the concept of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A synchronous lifting mechanism for a quartz stone curing furnace cage, comprising a support frame and a cage, both the support frame and the cage being cubic structures, with a hydraulic cylinder vertically installed at each of the four apex corners of the bottom of the support frame. The extension and retraction of the hydraulic cylinders drives the cage to move up and down within the support frame. The mechanism is characterized in that... A lifting guide mechanism is installed on each of the four top corners of the hoisting cage on a first support column. These four lifting guide mechanisms are used to guide the hoisting cage in a sliding motion. A lifting synchronization limiting mechanism is installed between each pair of diagonally opposite corners of the hoisting cage to achieve synchronous lifting and limiting between corresponding diagonally opposite corners. A second support column is installed at each of the four top corners of the support frame. The lifting guide mechanism includes an upper sliding guide wheel and a lower sliding guide wheel. The upper sliding guide wheel is located on the upper part of the corresponding first support column, and the lower sliding guide wheel is located on the lower part of the corresponding first support column. The upper and lower sliding guide wheels are respectively engaged on the corresponding second support columns. Both the upper and lower sliding guide wheels are V-groove guide rollers. The second support column is a square tube, and the upper and lower sliding guide wheels are engaged on the corresponding edges of the second support column. The lifting synchronization limiting mechanism includes two first synchronization ropes. A mechanism for guiding the first synchronization ropes is installed on the upper part of the first support column. The first guide wheel is provided at the bottom and top of the second support column, respectively, for guiding the first synchronous rope. The lower ends of the two first synchronous ropes are fixedly connected to two diagonally opposite apex corners of the bottom of the cage. The upper ends of the first synchronous ropes pass through the second guide wheel, the third guide wheel, and the first guide wheel, which are diagonally opposite to their lower fixed points, and are then fixedly connected to the upper part of the cage. The first synchronous ropes are always in a taut state. Alternatively, the lifting synchronous limiting mechanism includes a second synchronous rope. A fourth guide wheel is provided at the top of the first support column according to the guiding requirements for guiding the second synchronous rope. A fifth guide wheel and a sixth guide wheel are provided at the bottom and top of the second support column according to the guiding requirements for guiding the second synchronous rope. The lower end of the second synchronous rope is fixedly connected to one apex corner of the bottom of the cage. The upper end of the second synchronous rope passes through the fifth guide wheel, the sixth guide wheel, and the fourth guide wheel, and is then fixedly connected to the upper part of the cage. The second synchronous rope is always in a taut state.

2. The synchronous lifting mechanism for a quartz stone curing furnace cage according to claim 1, characterized in that, in A first tension threaded rod is fixedly installed at the upper end of the first synchronous rope, and a first fixed seat corresponding to the first tension threaded rod is provided on the upper part of the cage. The first tension threaded rod is fixed to a vertical plate of the first fixed seat by two first nuts.

3. The synchronous lifting mechanism for a quartz stone curing furnace cage according to claim 2, characterized in that, in A first auxiliary guide wheel is provided below the connection point between the lower end of the first synchronous rope and the bottom corner of the cage. The upper end of the first synchronous rope passes around the corresponding first auxiliary guide wheel and then passes around the corresponding second guide wheel, third guide wheel and first guide wheel in sequence.

4. The synchronous lifting mechanism for the cage of a quartz stone curing furnace according to claim 1, characterized in that, A second tensioning threaded rod is fixedly installed at the upper end of the second synchronous rope, and a second fixed seat corresponding to the second tensioning threaded rod is provided on the upper part of the cage. The second tensioning threaded rod is fixed to a vertical plate of the second fixed seat by two second nuts.

5. The synchronous lifting mechanism for the cage of a quartz stone curing furnace according to claim 2, characterized in that, A second auxiliary guide wheel is set below the connection between the lower end of the second synchronous rope and the bottom corner of the cage. The upper end of the second synchronous rope passes around the corresponding second auxiliary guide wheel and then passes around the corresponding fifth guide wheel, sixth guide wheel and fourth guide wheel in sequence.

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