Safety protection device of movable working platform

Abstract

The utility model discloses a safety protection device of a movable working platform, which relates to the technical field of movable platforms and comprises a support frame body, end beam walking devices, a lifting device and a lifting platform, the end beam walking devices are connected to the bottoms of two sides of the support frame body and drive the support frame body to move vertically, and the lifting platform is connected with the lifting device. The lifting device is installed on the supporting frame body, the lifting platform is connected to the output end of the lifting device, and the lifting device drives the lifting platform to move up and down on the supporting frame body. According to the safety protection device of the movable working platform, the problem that the platform shakes when a worker moves back and forth is solved, meanwhile, the safety protection device can be driven by the end beam walking device to axially move in a hearth so as to increase the working area of the worker, the effect of increasing the moving area of equipment is achieved, and the working efficiency is improved. And large-area crucible charging and material cleaning are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile platforms, and more specifically to a safety protection device for a mobile working platform. Background Art

[0002] Acheson graphitization furnace is a high-temperature electric furnace used to convert carbonaceous materials into artificial graphite. The design principle of this furnace is to load carbon billets and granular materials into a long furnace body made of refractory materials, which constitute a conductive furnace core.

[0003] Before and after the use of the Acheson graphitization furnace, a supporting platform will be set up for workers to move. The set supporting platform has multiple uses: 1. It can provide workers with a convenient mobile platform when loading the crucible into the furnace to improve the workers' loading efficiency; 2. After the Acheson graphitization furnace is roasted, the internal residue needs to be cleaned. The supporting platform can be used to load the cleaned residue to improve the cleaning efficiency; 3. After the use of the Acheson graphitization furnace, the internal sensor electrodes need to be inspected and repaired to improve the use efficiency of the Acheson graphitization furnace.

[0004] For example, the Chinese patent application number 202321039710.6 discloses a boiler furnace maintenance lifting platform, the structure of which includes a top frame, an inspection platform, a lifting mechanism, an extension platform and a plurality of first connecting rods, the first connecting rods being arranged at circumferential intervals around the inspection platform, the upper end of each first connecting rod being connected to the top frame, and the lower end of each first connecting rod being connected to the inspection platform, the lifting mechanism including a winch and a traction rope, one end of the traction rope being connected to a suspension device preset at the top of the boiler, and the other end of the traction rope being wound around the winch, the inspection platform including a bottom frame and a plurality of load-bearing beams, the two ends of the load-bearing beams being respectively connected to two opposite side frames of the bottom frame, and the winch being connected to the load-bearing beam. Although the boiler furnace maintenance lifting platform is provided with an extension platform for the operator to use outward, when the operator stands on the extension platform, the center of gravity of the lifting platform will move, causing the lifting platform to shake, which will increase the instability factor. Moreover, when loading the crucible and inspecting the equipment, the personnel need to move back and forth on the platform frequently, which will cause the traction rope to shake, which will easily increase the danger of the personnel at work. At the same time, the device can only move up and down in the boiler. When it needs to be moved in the boiler furnace, it can only be moved by the lifting equipment on the top of the traction rope. It is not convenient to move vertically by itself, which makes the functionality of the mobile platform single.

[0005] Therefore, it is necessary to propose a safety protection device for a mobile working platform to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] In view of the above problems, the utility model provides a safety protection device for a mobile work platform; it provides stable support, improves safety performance, and at the same time can increase the operator's activity area, facilitate large-area furnace loading and cleaning, is simple to operate, has strong controllability and high stability.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0010] A safety protection device for a mobile working platform, comprising a supporting frame, an end beam walking device, a lifting device and a lifting platform, wherein the end beam walking device is connected to the bottom of both sides of the supporting frame to drive the supporting frame to move vertically, the lifting device is installed on the supporting frame, the lifting platform is connected to the output end of the lifting device, and the lifting device drives the lifting platform to move up and down on the supporting frame;

[0011] The support frame body is composed of a crossbeam, a platform support device, a guide wheel and a guide frame. The bottoms of both ends of the crossbeam are connected to the end beam walking device, the platform support device is vertically connected to the middle of the crossbeam, the guide frame is connected to one side of the platform support device, and the guide wheel is connected to the top of the platform support device;

[0012] The lifting device is composed of a driving device and a steel wire rope, wherein the driving device is connected to the crossbeam, the output end of the driving device is fixedly connected to a drum, one end of the steel wire rope is connected to the drum, and the other end of the steel wire rope passes through the guide wheel and is connected to the lifting platform;

[0013] The lifting platform includes a heat insulation platform, an extension platform and a hollow fixed rod, the fixed rod is fixed to the four corners of the heat insulation platform, the fixed rod slides up and down in the guide frame, one end of the wire rope is connected to the fixed rod, a cavity is opened inside the heat insulation platform, a bidirectional threaded rod is rotatably connected in the cavity, a moving block is threadedly connected to the bidirectional threaded rod, the extension platform is connected to the moving block, and the bidirectional threaded rod can drive the extension platform to extend out of the heat insulation platform;

[0014] The two ends of the moving block are connected to the first fixed plate, the two sides of the cavity are provided with sliding grooves penetrating to the guide frame, the interior of the sliding groove is slidably connected with a clamping block, one end of the clamping block is connected to the second fixed plate, the second fixed plate is connected to a guide rod penetrating the first fixed plate, and a spring is sleeved on the guide rod;

[0015] A positioning strip is connected inside the guide frame, and one end of the clamping block away from the second fixing plate is connected to a positioning plate. The positioning plate and the positioning strip are provided with mutually meshing beveled tooth surfaces.

[0016] Preferably, a rotating assembly is installed on the thermal insulation platform, and the rotating assembly consists of a handle, a worm gear and a worm, and the worm gear is connected to the bidirectional threaded rod.

[0017] Preferably, a support platform is connected in the cavity, a synchronization component is connected in the support platform, the synchronization component is composed of a sprocket and a chain, and the sprocket is connected to the middle part of the bidirectional threaded rod.

[0018] Preferably, a climbing frame is connected between two adjacent fixing rods.

[0019] Preferably, the end beam traveling device is composed of an end beam frame, a reducer and traveling wheels.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This device is provided with a lifting platform on the support frame, and the lifting platform can rise and fall along the guide frame to work in the furnace. The support of the lifting platform by multiple platform support devices can improve the stability of the lifting platform, and solve the problem that the platform will shake when the staff moves back and forth. At the same time, through the drive of the end beam walking device, it can move axially in the furnace to increase the working area of ​​the staff, which has the effect of increasing the moving area of ​​the equipment and is convenient for large-area crucible loading and material cleaning.

[0022] 2. This device sets a card block in the lifting platform, and the card block can extend into the guide frame to fix the lifting platform on the guide frame. When heavy objects are transported, the insulation platform will not shake, which solves the problem that the support platform is prone to shaking due to the movement of the center. It has the effect of improving the stability of the insulation platform, providing stable support for the operator, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the structure of the utility model;

[0025] Figure 3 It is a three-dimensional schematic diagram of the connection structure between the heat insulation platform and the fixing rod in the utility model;

[0026] Figure 4 It is a three-dimensional cross-sectional schematic diagram of the connection structure between the heat insulation platform and the extension platform in the utility model;

[0027] Figure 5 It is a three-dimensional schematic diagram of the connection structure between the first fixing plate and the second fixing plate in the utility model.

[0028] Reference numerals:

[0029] 101. Support frame; 102. End beam walking device; 103. Lifting device; 104. Lifting platform; 105. Crossbeam; 106. Platform supporting device; 107. Guide wheel; 108. Guide frame; 109. Driving device; 110. Wire rope; 111. Reel; 112. Insulation platform; 113. Extension platform; 114. Fixed rod; 115. Cavity; 116. Bidirectional threaded rod; 117. Moving block; 118. First fixed plate; 119. Sliding groove; 120. Block; 121. Second fixed plate; 122. Guide rod; 123. Spring; 124. Positioning plate; 125. Positioning strip; 126. Rotating assembly; 127. Support table; 128. Synchronous assembly. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-5 A safety protection device for a mobile working platform includes a support frame 101, an end beam walking device 102, a lifting device 103 and a lifting platform 104. The end beam walking device 102 is composed of an end beam frame, a reducer and a running wheel. The running wheel is connected to the output end of the reducer. The reducer drives the running wheel to rotate, thereby driving the entire support frame 101 to move. When in use, a parallel running track needs to be set on the top of the Acheson graphitization furnace to facilitate the movement of the end beam walking device 102. The walking device 102 is connected to the bottom of both sides of the support frame 101, driving the support frame 101 to move along the direction of the Acheson graphitization furnace. The lifting device 103 is installed on the support frame 101, and the lifting platform 104 is connected to the output end of the lifting device 103. The driving device 109 on the lifting device 103 drives the wire rope 110 to move by rotating, thereby pulling the lifting platform 104 to rise and fall. The lifting device 103 drives the lifting platform 104 to move up and down on the support frame 101;

[0032] refer to Figures 1 to 3The support frame 101 is composed of a crossbeam 105, a platform support device 106, a guide wheel 107 and a guide frame 108. Pedals are also provided on both sides of the crossbeam 105, and guardrails are provided on the pedals. The bottoms of both ends of the crossbeam 105 are connected to the end beam walking device 102. The platform support device 106 is vertically connected to the middle of the crossbeam 105. The platform support device 106 is vertically arranged on the crossbeam 105, and the top is connected with a guide wheel 107. A guide frame 108 is provided on one side. The guide frame 108 is used to slide the fixing rod 114 up and down inside. A cross bar is provided at the bottom of the guide frame 108 to maintain the stability between the two guide frames 108 and increase the protection capability. The guide frame 108 is connected to one side of the platform support device 106, and the guide wheel 107 is connected to the top of the platform support device 106;

[0033] refer to Figures 1 to 3 The lifting device 103 is composed of a driving device 109 and a steel wire rope 110. The driving device 109 is connected to the crossbeam 105. The driving device 109 is a device that can provide rotational power, preferably a reduction motor, and needs to have a protection level of IP65 or above, an insulation level of H or above, and needs to be able to withstand a high temperature of 150 degrees continuously. The driving device 109 drives the drum 111 to rotate, so that the steel wire rope 110 can be wound around the drum 111. The output end of the driving device 109 is fixedly connected to the drum 111, one end of the steel wire rope 110 is connected to the drum 111, and the other end of the steel wire rope 110 passes through the guide wheel 107 and is connected to the lifting platform 104;

[0034] refer to Figure 4 The lifting platform 104 includes a heat-insulating platform 112, an extension platform 113 and a hollow fixed rod 114. The heat-insulating platform 112 and the extension platform 113 are made of heat-insulating materials to prevent the high temperature from affecting the operator after baking. The fixed rod 114 is fixed to the four corners of the heat-insulating platform 112. The fixed rod 114 slides up and down in the guide frame 108. The heat-insulating platform 112 slides up and down in the guide frame 108 through the fixed rods 114 at the four corners, thereby completing the lifting action. The wire rope 11 One end of the two-way threaded rod 116 is connected to the fixed rod 114, and a cavity 115 is provided inside the heat insulation platform 112. A two-way threaded rod 116 is rotatably connected in the cavity 115. The outer wall of the two-way threaded rod 116 is provided with symmetrical threads for driving a symmetrical moving block 117 to move. The moving block 117 is threadedly connected to the two-way threaded rod 116, and the extension platform 113 is connected to the moving block 117. The two-way threaded rod 116 can drive the extension platform 113 to extend out of the heat insulation platform 112.

[0035] refer to Figure 5, both ends of the moving block 117 are connected with a first fixed plate 118, and both sides of the cavity 115 are provided with sliding grooves 119 that penetrate to the guide frame 108. The first fixed plate 118 pushes the card block 120 and the second fixed plate 121 to move in the sliding groove 119. The sliding groove 119 is internally slidably connected with the card block 120. The card block 120 has a certain length. When one end extends into the guide frame 108, the other end will still be located in the sliding groove 119. One end of the card block 120 is connected with the second fixed plate 121, and the second fixed plate 121 is connected with a guide rod 122 that penetrates the first fixed plate 118. The guide rod 122 is sleeved with a spring 123. After the card block 120 is inserted into the guide frame 108, when the moving block 117 continues to move, the spring 123 will be compressed, and the pushing force will not be directly transmitted to the card block 120;

[0036] refer to Figure 2 and Figure 5 A positioning bar 125 is connected inside the guide frame 108, and the positioning bar 125 and the positioning plate 124 are arranged in cooperation with each other, and are provided with mutually meshing tooth surfaces. The end of the block 120 away from the second fixed plate 121 is connected to the positioning plate 124, and the positioning plate 124 and the positioning bar 125 are provided with mutually meshing bevel tooth surfaces.

[0037] Specifically, refer to Figure 3 and Figure 4 A rotating assembly 126 is installed on the insulation platform 112. The rotating assembly 126 consists of a handle, a worm wheel and a worm. The handle is connected to the worm. By rotating the handle, the worm can drive the worm wheel to rotate. The worm wheel is connected to the bidirectional threaded rod 116.

[0038] Specifically, refer to Figure 4 A support platform 127 is connected to the cavity 115, and the support platform 127 is used to support the bidirectional threaded rod 116. At the same time, it is used to protect the synchronization component 128. The support platform 127 is connected to the synchronization component 128, and the synchronization component 128 consists of a sprocket and a chain. The sprocket is connected to the middle part of the bidirectional threaded rod 116.

[0039] Specifically, refer to Figure 1 A climbing frame is connected between two adjacent fixing rods 114. When the lifting platform 104 moves to the bottom, the climbing frame facilitates the operator to enter and exit.

[0040] Specifically, the end beam traveling device 102 is composed of an end beam frame, a reducer and traveling wheels. The reducer needs to have a protection level of IP65 or above, an insulation level of H or above, and needs to be able to withstand a continuous high temperature of 150 degrees.

[0041] In this embodiment, parallel driving tracks are installed on both sides of the furnace of the Acheson graphitization furnace for the movement of the end beam traveling device 102. A reducer is installed on the end beam traveling device 102 to drive the support frame 101 to move, so that the entire device can move along the axial direction of the furnace to expand the working area of ​​the operator. Pedals are provided on both sides of the support frame 101, and guardrails are connected to the pedals to increase safety. A control cabinet and a cable harness automatic winding device are installed on one end of the crossbeam 105;

[0042] In the initial position, the lifting device 103 is tightened, the wire rope 110 is wound around the drum 111, and the lifting platform 104 is kept horizontal with the positions of the pedals on both sides, so that the operator can enter the lifting platform 104. The lifting platform 104 is provided with a rotating guardrail door on both sides. When the lifting platform 104 needs to be lowered, the driving device 109 in the lifting device 103 is started, and the output end of the driving device 109 drives the drum 111 to rotate. When the drum 111 rotates, the rope is released upward, so that the wire rope 110 moves upward. After the direction is changed by the guide wheel 107, the end drives the lifting platform 104 to move downward. One end of the wire rope 110 is fixed on the fixed rod 114, so that the fixed rod 114 can slide downward in the guide frame 108. The wire rope 110 is released synchronously by multiple lifting devices 103, so that the heat insulation platform 112 can be smoothly lowered;

[0043] When the heat insulation platform 112 stops at a certain position and workers need to work, the rotating assembly 126 is rotated, and the rotating assembly 126 drives the bidirectional threaded rod 116 to rotate. The bidirectional threaded rod 116 pushes the symmetrical moving blocks 117 on the outer wall to move through the rotation, so as to push the symmetrical extension platform 113 out of the cavity 115. After the extension platform 113 is extended, the activity space of the operator can be increased;

[0044] When the moving block 117 moves, it will drive the first fixed plates 118 on both sides to move together. The first fixed plate 118 pushes the card block 120 to move in the sliding groove 119 through the guide rod 122 and the spring 123, and then pushes it out of the sliding groove 119 and enters the guide frame 108. After entering the guide frame 108, it will come into contact with the positioning bar 125 in the guide frame 108, thereby fixing the heat insulation platform 112. The positioning plate 124 and the positioning bar 125 are provided with beveled tooth surfaces, the beveled tooth surface of the positioning plate 124 faces downward, and the beveled tooth surface of the positioning bar 125 faces upward. When the positioning plate 124 contacts the positioning bar 125, the stability of the heat insulation platform 112 fixed on the platform support device 106 can be increased. Because the crucible is heavy, the heat insulation platform 112 will not shake when the operator loads the crucible into the furnace, so as to provide stable support, which is convenient for the staff to carry and move objects.

[0045] After the crucible loading at one location is completed, the support frame 101 is driven to move by the end beam walking device 102, so that the entire device can move axially along the furnace to load the crucible at the next location. Similarly, the residue after roasting can be cleaned, which improves the cleaning efficiency of the workers and is also convenient for maintenance personnel to inspect the furnace;

[0046] When it is necessary to rise, the rotating assembly 126 is reversed so that the extension platform 113 can be retracted into the cavity 115. At the same time, the block 120 will be retracted into the first fixed plate 118, so that the block 120 loses its fixing effect on the insulation platform 112. The lifting platform 104 can be driven to rise by the lifting device 103. When the insulation platform 112 is kept level with the pedals on both sides, it is convenient for maintenance personnel to go out. After completing the work of one furnace, the equipment can be moved to the next furnace as a whole through the lifting equipment, so as to carry out the work of the next furnace.

[0047] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A safety protection device for a mobile working platform, characterized in that: The invention comprises a support frame (101), an end beam walking device (102), a lifting device (103) and a lifting platform (104); the end beam walking device (102) is connected to the bottom of both sides of the support frame (101) to drive the support frame (101) to move vertically; the lifting device (103) is installed on the support frame (101); the lifting platform (104) is connected to the output end of the lifting device (103); the lifting device (103) drives the lifting platform (104) to move up and down on the support frame (101); The support frame (101) is composed of a crossbeam (105), a platform support device (106), a guide wheel (107) and a guide frame (108); the bottoms of both ends of the crossbeam (105) are connected to the end beam walking device (102); the platform support device (106) is vertically connected to the middle of the crossbeam (105); the guide frame (108) is connected to one side of the platform support device (106); and the guide wheel (107) is connected to the top of the platform support device (106); The lifting device (103) is composed of a driving device (109) and a steel wire rope (110), wherein the driving device (109) is connected to the crossbeam (105), the output end of the driving device (109) is fixedly connected to a drum (111), one end of the steel wire rope (110) is connected to the drum (111), and the other end of the steel wire rope (110) passes through a guide wheel (107) and is connected to the lifting platform (104); The lifting platform (104) comprises a heat insulation platform (112), an extension platform (113) and a hollow fixed rod (114), wherein the fixed rod (114) is fixed to the four corners of the heat insulation platform (112), and the fixed rod (114) slides up and down in the guide frame (108), one end of the steel wire rope (110) is connected to the fixed rod (114), a cavity (115) is provided inside the heat insulation platform (112), a bidirectional threaded rod (116) is rotatably connected in the cavity (115), a moving block (117) is threadedly connected to the bidirectional threaded rod (116), the extension platform (113) is connected to the moving block (117), and the bidirectional threaded rod (116) can drive the extension platform (113) to extend out from the heat insulation platform (112); The two ends of the moving block (117) are connected to a first fixed plate (118), the two sides of the cavity (115) are provided with sliding grooves (119) penetrating to the guide frame (108), the interior of the sliding groove (119) is slidably connected with a clamping block (120), one end of the clamping block (120) is connected to a second fixed plate (121), the second fixed plate (121) is connected to a guide rod (122) penetrating the first fixed plate (118), and the guide rod (122) is sleeved with a spring (123); A positioning strip (125) is connected inside the guide frame (108), and one end of the clamping block (120) away from the second fixing plate (121) is connected to a positioning plate (124), and mutually meshing beveled tooth surfaces are provided on the positioning plate (124) and the positioning strip (125).

2. A safety protection device for a mobile working platform according to claim 1, characterized in that: A rotating assembly (126) is installed on the heat-insulating platform (112), and the rotating assembly (126) is composed of a handle, a worm wheel and a worm, and the worm wheel is connected to the bidirectional threaded rod (116).

3. A safety protection device for a mobile working platform according to claim 2, characterized in that: A support platform (127) is connected inside the cavity (115), a synchronization component (128) is connected inside the support platform (127), the synchronization component (128) is composed of a sprocket and a chain, and the sprocket is connected to the middle part of the bidirectional threaded rod (116).

4. The safety protection device for a mobile working platform according to claim 1, characterized in that: A climbing frame is connected between two adjacent fixing rods (114).

5. The safety protection device for a mobile working platform according to claim 1, characterized in that: The end beam traveling device (102) is composed of an end beam frame, a speed reducer and traveling wheels.

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