Indoor elevator installation operation platform

Abstract

The invention relates to the technical field of elevator installation platforms, and discloses an indoor elevator installation operation platform which comprises a first rod, one end of the first rod is connected with a third rod, one end of the third rod is connected with a fourth rod, a rope is installed at the upper end of the fourth rod, and a pedal is further placed at the upper end of the third rod. One end of the second rod and one end of the first rod are sleeved with a stress device, the stress device operably abuts against the concrete, the stress device comprises an outer sleeve, a supporting plate, a connecting frame, a supporting frame and a steel cable, and one end of the outer sleeve is slidably connected with the supporting plate. The two ends of the supporting frame on the second rod and the two ends of the supporting frame on the first rod abut against concrete and the second rod correspondingly, so that the supporting force of the second rod and the first rod is increased, safety is improved, when the second rod deforms, the supporting plate slides out firstly, then the supporting frame abuts against the supporting plate, and the supporting plate is located at the bending deformation convex position of the second rod; therefore, supporting is achieved.

Description

Technical Field

[0001] The invention relates to the field of elevator installation platforms, in particular to an indoor elevator installation operation platform. Background Art

[0002] The installation of the main steel rope of the indoor elevator and the installation of the elevator counterweight require the construction of an operating platform in the elevator shaft. Usually, the original internal scaffolding of the elevator shaft is retained as the operating platform, and the scaffolding is removed after the installation is completed or re-erected later as the operating platform. If the original scaffolding of the elevator shaft is used as the operating platform, the scaffolding cannot be removed in advance and must be removed after the installation of the main steel rope and counterweight of the indoor elevator is completed. This approach has poor stability and wastes a lot of materials, affecting material turnover. If a floor-standing frame is re-erected as a platform or a cantilever frame is set up as an operating platform later, a lot of manpower is wasted and the progress is affected. It is also necessary to consider the pre-embedded I-beams and the repair of the reserved openings.

[0003] The existing indoor elevator installation and operation platform is complicated to assemble and lacks safety. Since only three scaffolding steel pipes for installing the operation platform are against the concrete wall, when the platform exceeds the weight-bearing range of the scaffolding steel pipes themselves, problems such as bending and deformation are prone to occur. Summary of the invention

[0004] The present invention provides an indoor elevator installation and operation platform, which solves the problems of insufficient safety of the existing indoor elevator installation and operation platform mentioned in the above background technology.

[0005] The present invention provides the following technical solution: an indoor elevator installation operation platform comprises a first rod and a second rod, one end of the first rod is connected to a third rod, one end of the third rod is connected to a fourth rod, a rope is installed at the upper end of the fourth rod, and a pedal is also placed at the upper end of the third rod;

[0006] The second rod and one end of the first rod are sleeved with a force-bearing device, and the force-bearing device can be operably abutted against concrete. The force-bearing device includes a sleeve, a support plate, a connecting frame, a support frame and a steel cable. One end of the sleeve is slidably connected to the support plate, and the support plate wraps the outer surface of the second rod. A connecting frame is fixedly installed on one side of the sleeve, and a support frame is rotatably connected to one side of the connecting frame. One side of the support frame abuts against the support plate, and the other side of the support frame abuts against the concrete.

[0007] As an optional solution for the indoor elevator installation operating platform described in the present invention, the lower end of the support frame is rotatably connected to a plurality of adjustment devices, the adjustment devices include a support column connected to the lower end of the support frame, the lower end of the support column is slidably connected to a slide rod, and the plurality of slide rods are used to abut against the support plate.

[0008] As an optional solution of the indoor elevator installation operation platform of the present invention, wherein: a first liquid storage cavity is further provided inside the support frame, a force-bearing plug is slidably connected inside the first liquid storage cavity, and the force-bearing plug is connected to the support frame through a first spring;

[0009] A rubber block is also installed inside the support frame, the lower end of the stress plug abuts against the rubber block, and the upper end of the stress plug can be operably abutted against concrete. A first piston chamber is also provided inside the outer sleeve, and one end of the support frame is connected to a first tube, one end of the first tube is connected to the interior of the first liquid storage chamber, and the other end of the first tube is connected to the interior of the first piston chamber.

[0010] As an optional solution for the indoor elevator installation operating platform described in the present invention, a vertical plate is installed inside the connecting pipe, and a rotating shaft is also rotatably connected inside the connecting pipe. The rotating shaft is located at the axis center of the connecting pipe, and an extension plate is installed at one end of the rotating shaft. The vertical plate and the extension plate divide the interior of the connecting pipe into a first cavity and a second cavity. The rotating shaft is connected to a support column, and the support column can be operated to rotate and swing.

[0011] As an optional solution for the indoor elevator installation operation platform of the present invention, wherein: a plurality of second liquid storage chambers, piston plates, second tubes and push rods are further arranged inside the outer casing, and the number of the second liquid storage chambers, piston plates, second tubes and push rods corresponds to the number of the support columns;

[0012] A second liquid storage cavity is provided inside the outer sleeve, a piston plate is slidably connected inside the second liquid storage cavity, a push rod is slidably connected to one end of the piston plate, a connecting strip is installed at the lower end of the support plate, the connecting strip is connected to the push rod, and a second tube is also provided at the second liquid storage cavity, and the second tube is connected to the first cavity;

[0013] The sizes of the second liquid storage chamber, the piston plate and the second tube of each group are different.

[0014] As an optional solution for the indoor elevator installation operation platform of the present invention, wherein: a flow slot is arranged inside the support column, a first pressure relief valve is installed inside the flow slot, a plug column is slidably connected to the other end of the flow slot, and the plug column is connected to the support column through a fourth spring;

[0015] The slide bar is connected to the support column via a third spring, and a plurality of slots are provided at both ends of the slide bar, and the plug column is used to be buckled in the slots;

[0016] One end of the first tube is also communicated with the interior of the flow channel.

[0017] As an optional solution for the indoor elevator installation operating platform described in the present invention, it also includes screws, which are fixedly installed on concrete, the steel cables of the force-bearing devices on the first rod and the second rod are interconnected, and the support frame is wrapped around the first liquid storage chamber.

[0018] As an optional solution for the indoor elevator installation operating platform described in the present invention, a rotating shaft is arranged inside the support plate, the steel cable is wound around the outer surface of the rotating shaft, an arc plate is also slidably connected inside the support plate, and one end of the arc plate is used to pass the steel cable.

[0019] As an optional solution for installing the operating platform of the indoor elevator described in the present invention, a second pressure relief valve and a third tube are also installed at one end of the support plate, the second pressure relief valve is arranged at one end of the third tube, a second spring is also arranged inside the support plate, the sliding connection is inside the arc groove, the sliding connection is connected to the support plate through the second spring, and one end of the third tube is connected to the arc groove.

[0020] As an optional solution for the indoor elevator installation operating platform of the present invention, one end of the rotating shaft passes through the support plate, and the rotating shaft is manually rotated to store the steel cable.

[0021] The present invention has the following beneficial effects:

[0022] 1. The indoor elevator is installed with an operating platform, and the two ends of the second rod and the support frame on the first rod are respectively in contact with the concrete and the second rod, so as to increase the supporting force of the second rod and the first rod, thereby improving safety. When the second rod is deformed, its support plate will slide out first, and then the support frame will be in contact with the support plate, and the support plate is located at the convex position of the bending deformation of the second rod, so as to achieve support.

[0023] 2. The indoor elevator is installed with an operating platform. By controlling the amount of liquid extrusion, the distance between every two slide bars is equal, so that several slide bars are evenly distributed on one side of the support plate, the supporting force is improved, and the supporting position can be changed with the length of the connecting frame extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the force-bearing device of the present invention.

[0026] Figure 3 It is a main cross-sectional view of the force-bearing device of the present invention.

[0027] Figure 4 It is a main cross-sectional view of the outer jacket of the present invention.

[0028] Figure 5It is a schematic structural diagram of the regulating device of the present invention.

[0029] Figure 6 It is a main cross-sectional view of the adjusting device of the present invention.

[0030] Figure 7 It is a schematic diagram of the structure of the steel cable and the rotating shaft of the present invention.

[0031] In the figure: 1, first rod; 2, second rod; 3, third rod; 4, fourth rod; 5, rope; 6, pedal; 7, force device; 8, adjusting device; 9, screw; 10, first liquid storage chamber; 11, first spring; 12, force plug; 13, rubber block; 14, first tube; 15, second tube; 16, connecting strip; 17, push rod; 18, second liquid storage chamber; 19, piston plate; 20, first pressure relief valve; 21, third tube; 22. Second pressure relief valve; 23. Rotating shaft; 24. Arc groove; 25. Second spring; 26. Arc plate; 71. Outer sleeve; 72. Support plate; 73. Connecting frame; 74. Support frame; 75. Steel cable; 76. First piston chamber; 80. Fourth spring; 81. Connecting pipe; 82. Support column; 83. Sliding rod; 84. Rotating shaft; 85. Vertical plate; 86. Extending plate; 87. Third spring; 88. Circulation groove; 89. Insert column. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] See also Figure 1-2 An indoor elevator installation operation platform comprises a first rod 1 and a second rod 2, one end of the first rod 1 is connected to a third rod 3, one end of the third rod 3 is connected to a fourth rod 4, a rope 5 is installed at the upper end of the fourth rod 4, and a pedal 6 is also placed at the upper end of the third rod 3;

[0035] The second rod 2 and one end of the first rod 1 are sleeved with a force-bearing device 7, which can be operably abutted against concrete. The force-bearing device 7 includes a sleeve 71, a support plate 72, a connecting frame 73, a support frame 74 and a steel cable 75. One end of the sleeve 71 is slidably connected to the support plate 72, and the support plate 72 wraps the outer surface of the second rod 2. A connecting frame 73 is fixedly installed on one side of the sleeve 71, and a support frame 74 is rotatably connected to one side of the connecting frame 73. One side of the support frame 74 abuts against the support plate 72, and the other side of the support frame 74 abuts against the concrete.

[0036] The existing indoor elevator installation and operation platform is complicated to assemble and lacks safety. Since only three scaffolding steel pipes for installing the operation platform are against the concrete wall, when the platform exceeds the weight-bearing range of the scaffolding steel pipes themselves, problems such as bending and deformation are prone to occur.

[0037] First, the first rod 1, the second rod 2, the third rod 3, the fourth rod 4 and the pedal 6 are assembled by means of a lock. Figure 1 As shown, the force-bearing device 7 is then sleeved on the second rod 2 and the first rod 1. When the platform composed of the pedal 6 and the third rod 3 tilts down severely, the third rod 3 pulls the first rod 1 and the second rod 2 to bend and deform toward the pedal 6. At this time, the two ends of the second rod 2 and the support frame 74 on the first rod 1 are respectively in contact with the concrete and the second rod 2, thereby increasing the supporting force of the second rod 2 and the first rod 1, thereby improving safety;

[0038] Furthermore, when the second rod 2 is bent by force, the support plate 72 inside the outer cover 71 will be pushed out to wrap one end of the second rod 2. The two support plates 72 completely wrap one end of the second rod 2, and the support plate 72 is used to support the second rod 2, thereby further increasing the supporting force of the second rod 2, and one end of the support frame 74 will contact the support plate 72.

[0039] It should be particularly noted that when the second rod 2 is deformed, its support plate 72 will slide out first, and then the support frame 74 will contact the support plate 72, and the support plate 72 is located at the convex position of the bending deformation of the second rod 2, so as to achieve support.

[0040] Example 2

[0041] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-3 The lower end of the support frame 74 is rotatably connected to a plurality of adjustment devices 8, and the adjustment devices 8 include a support column 82 connected to the lower end of the support frame 74, and a slide rod 83 is slidably connected to the lower end of the support column 82, and the plurality of slide rods 83 are used to abut against the support plate 72.

[0042] according to Figure 3 As shown, a plurality of support columns 82 and slide bars 83 are installed inside the support frame 74, a plurality of slide bars 83 are abutted against the support plate 72, and the position of each support column 82 is adjusted by rotation so that the distance between every two support columns 82 is equal, thereby improving the supporting force of the second rod 2.

[0043] Example 3

[0044] This embodiment is an improvement made on the basis of embodiment 2. For details, please refer to Figure 1-3The support frame 74 is further provided with a first liquid storage cavity 10, and a force-bearing plug 12 is slidably connected to the first liquid storage cavity 10, and the force-bearing plug 12 is connected to the support frame 74 via a first spring 11;

[0045] A rubber block 13 is also installed inside the support frame 74, the lower end of the stress plug 12 abuts against the rubber block 13, and the upper end of the stress plug 12 can be operably abutted against the concrete. A first piston chamber 76 is also provided inside the outer sleeve 71, and one end of the support frame 74 is connected to the first tube 14, one end of the first tube 14 is connected to the interior of the first liquid storage chamber 10, and the other end of the first tube 14 is connected to the interior of the first piston chamber 76.

[0046] Drive: When the second rod 2 is deformed and bent by tension, the stress plug 12 on the support frame 74 will come into contact with the concrete, and the concrete will be used to squeeze the stress plug 12 over the rubber block 13, so that the first spring 11 pulls the stress plug 12 to slide downward, and the liquid inside the first liquid storage chamber 10 is squeezed to the first tube 14 through the stress plug 12, and the liquid is transported to the first piston chamber 76 through the first tube 14, so that the support plate 72 is pushed by the liquid in the first piston chamber 76 to slide and wrap one end of the second rod 2.

[0047] Example 4

[0048] This embodiment is an improvement made on the basis of embodiment 3. For details, please refer to Figure 1-6 A vertical plate 85 is installed inside the connecting tube 81, and a rotating shaft 84 is also rotatably connected inside the connecting tube 81. The rotating shaft 84 is located at the axis of the connecting tube 81, and an extension plate 86 is installed at one end of the rotating shaft 84. The vertical plate 85 and the extension plate 86 divide the interior of the connecting tube 81 into a first cavity and a second cavity. The rotating shaft 84 is connected to the support column 82, and the support column 82 can be operated to rotate and swing.

[0049] The outer sleeve 71 is further provided with a plurality of second liquid storage chambers 18, piston plates 19, second tubes 15 and push rods 17. The number of the second liquid storage chambers 18, piston plates 19, second tubes 15 and push rods 17 corresponds to the number of the support columns 82.

[0050] A second liquid storage chamber 18 is provided inside the outer sleeve 71, a piston plate 19 is slidably connected inside the second liquid storage chamber 18, a push rod 17 is slidably connected to one end of the piston plate 19, a connecting strip 16 is installed at the lower end of the support plate 72, the connecting strip 16 is connected to the push rod 17, and a second tube 15 is also provided at the second liquid storage chamber 18, and the second tube 15 is connected to the first chamber;

[0051] The sizes of each group of the second liquid storage chamber 18, the piston plate 19 and the second tube 15 are different.

[0052] according to Figure 4 value Figure 6 As shown, when the support plate 72 slides to one side, it will also drive the connecting strip 16 and the push rod 17 to slide to one side, and the push rod 17 is used to push the piston plate 19 to squeeze the liquid inside the second liquid storage chamber 18 to the second tube 15, and the second tube 15 transports the liquid to between the extension plate 86 and the vertical plate 85, so as to push the extension plate 86 to rotate, and the extension plate 86 drives the rotating shaft 84 and the support column 82 to rotate, so as to adjust the position of the support column 82 and the slide bar 83. Since the sizes of each group of second liquid storage chambers 18, piston plates 19 and second tubes 15 are different, the amount of liquid squeezed by each group of piston plates 19 is different, so that the rotation angle of each support column 82 is different, because the sliding distance of the push connection frame 73 is matched with the amount of liquid squeezed by the piston plate 19, so that the distance between each two slide bars 83 is equal by controlling the amount of liquid squeezed, so that a plurality of slide bars 83 are evenly distributed on one side of the support plate 72, the supporting force is improved, and the supporting position can be changed with the length of the extension of the connection frame 73;

[0053] It should be noted that a torque spring is installed on one side of the rotating shaft 84 to facilitate the use of the torque spring to reset the connecting pipe 81 after the internal pressure is released.

[0054] Example 5

[0055] This embodiment is an improvement made on the basis of embodiment 4. For details, please refer to Figure 1-7 The support column 82 is provided with a flow slot 88 inside, the first pressure relief valve 20 is installed inside the flow slot 88, the other end of the flow slot 88 is slidably connected with a plug post 89, and the plug post 89 is connected to the support column 82 through a fourth spring 80;

[0056] The slide bar 83 is connected to the support column 82 via a third spring 87. A plurality of slots are provided at both ends of the slide bar 83, and the insert column 89 is used to be buckled in the slots.

[0057] One end of the first tube 14 is also in communication with the interior of the flow groove 88 .

[0058] One end of the first tube 14 has two tubes, namely, a first delivery tube and a second delivery tube. The first delivery tube is connected to the first piston chamber 76, and the second delivery tube is connected to the inside of the support column 82. The diameter of the first delivery tube is larger than that of the second delivery tube. Therefore, the first piston chamber 76 will first push the support plate 72 to slide. When the first piston chamber 76 is full of liquid, most of the liquid in the first tube 14 will flow into the second delivery tube. The second delivery tube delivers the liquid to the circulation groove 88, so that the liquid entering the circulation groove 88 squeezes and opens the first pressure relief valve 20, so that the liquid pushes the plug column 89 to slide to one side, and the plug column 89 is buckled in the card slot to fix the slide bar 83.

[0059] It should be particularly noted that when the connecting tube 81 drives the supporting column 82 and the sliding rod 83 to rotate and adjust the position, the third spring 87 will automatically push the sliding rod 83 to adjust the telescopic position.

[0060] Example 6

[0061] This embodiment is an improvement made on the basis of embodiment 5. For details, please refer to Figure 1-7 , further comprising a screw 9, the screw 9 is fixedly mounted on the concrete, the first rod 1 and the steel cable 75 of the force-bearing device 7 on the second rod 2 are connected to each other, and the support frame 74 is wound around the first liquid storage chamber 10;

[0062] The support plate 72 is provided with a rotating shaft 23 inside, and the steel cable 75 is wound around the outer surface of the rotating shaft 23. The support plate 72 is also slidably connected with an arc plate 26 inside, and one end of the arc plate 26 is used to penetrate the steel cable 75.

[0063] A second pressure relief valve 22 and a third tube 21 are also installed at one end of the support plate 72. The second pressure relief valve 22 is arranged at one end of the third tube 21. A second spring 25 is also arranged inside the support plate 72. The arc plate 26 is slidably connected inside the circular arc groove 24. The arc plate 26 and the support plate 72 are connected through the second spring 25. One end of the third tube 21 is connected to the circular arc groove 24.

[0064] One end of the rotating shaft 23 passes through the supporting plate 72 , and the rotating shaft 23 is manually rotated to accommodate the steel cable 75 .

[0065] By connecting the steel cable 75 to the support plate 72, the steel cables 75 of the first rod 1 and the second rod 2 are connected to each other and wound around the steel cables 75, thereby improving the support strength;

[0066] Furthermore, after the second rod 2 is stressed, its center position will bend toward the pedal 6. In this way, by connecting a sufficiently long steel cable 75 to the support plate 72, according to Figure 7 As shown, when the support plate 72 slides, the steel cable 75 will be peeled off from the outer surface of the rotating shaft 23, so that its own length is extended, so that one end of the steel cable 75 can move to the center position of the second rod 2 along with the support plate 72, and then one end of the steel cable 75 is fixed by the arc plate 26, so as to improve the pulling of the steel cable 75 and improve the overall support strength and safety;

[0067] When the liquid in the flow groove 88 squeezes the plug 89 to slide, the liquid in the first piston chamber 76 increases the hydraulic pressure along with the liquid continuously transported by the first tube 14, thereby squeezing the liquid in the first piston chamber 76 to open the second pressure relief valve 22, so that part of the liquid in the first piston chamber 76 enters the third tube 21, and the liquid is transported to the arc groove 24 through the third tube 21, thereby pushing the arc plate 26 to slide upward, and passing the steel cable 75 through the arc plate 26. In this way, the steel cable 75 is fixed, and the steel cable 75 through the first rod 1 and the second rod 2 is wound on the screw 9, thereby improving the support strength of the first rod 1 and the second rod 2;

[0068] It should be particularly noted that a pressure relief port is also installed inside the circular arc groove 24. When there is excess liquid transported by the third pipe 21, the excess liquid is discharged through the pressure relief port.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An indoor elevator installation operation platform, comprising a first rod (1) and a second rod (2), characterized in that: One end of the first rod (1) is connected to a third rod (3), one end of the third rod (3) is connected to a fourth rod (4), a rope (5) is installed at the upper end of the fourth rod (4), and a pedal (6) is also placed at the upper end of the third rod (3); The second rod (2) and one end of the first rod (1) are sleeved with a force-bearing device (7), and the force-bearing device (7) can be operably abutted against concrete. The force-bearing device (7) comprises an outer sleeve (71), a support plate (72), a connecting frame (73), a support frame (74) and a steel cable (75). One end of the outer sleeve (71) is slidably connected to the support plate (72), and the support plate (72) wraps the outer surface of the second rod (2). A connecting frame (73) is fixedly mounted on one side of the outer sleeve (71), and a support frame (74) is rotatably connected to one side of the connecting frame (73). One side of the support frame (74) abuts against the support plate (72), and the other side of the support frame (74) abuts against the concrete.

2. The indoor elevator installation and operation platform according to claim 1, characterized in that: The lower end of the support frame (74) is rotatably connected to a plurality of adjustment devices (8), the adjustment devices (8) comprising a support column (82) connected to the lower end of the support frame (74), the lower end of the support column (82) being slidably connected to a slide rod (83), and the plurality of slide rods (83) are used to abut against the support plate (72).

3. The indoor elevator installation and operation platform according to claim 2, characterized in that: A first liquid storage cavity (10) is also provided inside the support frame (74), a force-bearing plug (12) is slidably connected inside the first liquid storage cavity (10), and the force-bearing plug (12) is connected to the support frame (74) via a first spring (11); A rubber block (13) is also installed inside the support frame (74), the lower end of the stress plug (12) abuts against the rubber block (13), and the upper end of the stress plug (12) can be operably abutted against concrete. A first piston chamber (76) is also provided inside the outer sleeve (71), and one end of the support frame (74) is connected to a first tube (14), one end of the first tube (14) is connected to the inside of the first liquid storage chamber (10), and the other end of the first tube (14) is connected to the inside of the first piston chamber (76).

4. The indoor elevator installation and operation platform according to claim 3, characterized in that: A vertical plate (85) is installed inside the connecting tube (81), and a rotating shaft (84) is also rotatably connected inside the connecting tube (81). The rotating shaft (84) is located at the axis of the connecting tube (81), and an extension plate (86) is installed at one end of the rotating shaft (84). The vertical plate (85) and the extension plate (86) divide the interior of the connecting tube (81) into a first chamber and a second chamber. The rotating shaft (84) is connected to the support column (82), and the support column (82) can be operated to rotate and swing.

5. The indoor elevator installation and operation platform according to claim 4, characterized in that: The outer sleeve (71) is further provided with a plurality of second liquid storage chambers (18), piston plates (19), second tubes (15) and push rods (17) inside, and the number of the second liquid storage chambers (18), piston plates (19), second tubes (15) and push rods (17) corresponds to the number of the support columns (82); A second liquid storage chamber (18) is provided inside the outer sleeve (71), a piston plate (19) is slidably connected inside the second liquid storage chamber (18), one end of the piston plate (19) is slidably connected to a push rod (17), a connecting strip (16) is installed at the lower end of the support plate (72), the connecting strip (16) is connected to the push rod (17), and a second tube (15) is also provided at the second liquid storage chamber (18), and the second tube (15) is connected to the first chamber; The sizes of each group of the second liquid storage chamber (18), the piston plate (19) and the second tube (15) are different.

6. The indoor elevator installation and operation platform according to claim 5, characterized in that: The support column (82) is provided with a flow groove (88) inside, a first pressure relief valve (20) is installed inside the flow groove (88), the other end of the flow groove (88) is slidably connected with a plug column (89), and the plug column (89) is connected to the support column (82) via a fourth spring (80); The slide bar (83) is connected to the support column (82) via a third spring (87), and a plurality of slots are provided at both ends of the slide bar (83), and the plug column (89) is used to be buckled in the slots; One end of the first tube (14) is also in communication with the interior of the flow channel (88).

7. The indoor elevator installation and operation platform according to claim 1, characterized in that: It also includes a screw (9) which is fixedly mounted on concrete, the first rod (1) and the steel cable (75) of the force-bearing device (7) on the second rod (2) are connected to each other, and the support frame (74) is wound around the first liquid storage chamber (10).

8. The indoor elevator installation and operation platform according to claim 7, characterized in that: A rotating shaft (23) is arranged inside the support plate (72), and the steel cable (75) is wound around the outer surface of the rotating shaft (23). An arc plate (26) is also slidably connected inside the support plate (72), and one end of the arc plate (26) is used to pass through the steel cable (75).

9. The indoor elevator installation and operation platform according to claim 8, characterized in that: A second pressure relief valve (22) and a third tube (21) are also installed at one end of the support plate (72); the second pressure relief valve (22) is arranged at one end of the third tube (21); a second spring (25) is also arranged inside the support plate (72); the arc plate (26) is slidably connected inside the circular arc groove (24); the arc plate (26) and the support plate (72) are connected via the second spring (25); and one end of the third tube (21) is connected to the circular arc groove (24).

10. The indoor elevator installation and operation platform according to claim 9, characterized in that: One end of the rotating shaft (23) passes through the supporting plate (72), and the steel cable (75) is stored by manually rotating the rotating shaft (23).

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