Patrol and maintenance platform for lower rack

Abstract

The utility model relates to the technical field of maintenance platforms, in particular to a lower rack patrol maintenance platform which comprises a platform body and a protective fence, a ladder stand extending downwards is installed on the platform body, a plurality of fence sleeves are installed on the edge of the platform body, and the bottom of a vertical rod of the protective fence is connected into the fence sleeves in a sliding mode. A lifting assembly is installed in the fence sleeve, and a lifting part of the lifting assembly is connected to the bottom of the vertical rod. A rack in the vertical direction is arranged in the fence sleeve, the tooth direction of the rack is obliquely upward, a vertical groove is formed in the side face of the lower end of the vertical rod, a clamping block is hinged into the vertical groove, the clamping block is connected with the vertical rod through an elastic piece, and the clamping block is connected with the rack in a clamped mode, so that the vertical rod can ascend and cannot descend. A console is also included; the remote control device is in signal connection with the console, and the remote control device is only used for controlling the lifting assembly to ascend through the console; an electromagnetic block is arranged on the side face of the vertical rod. An armature is arranged on the clamping block. The console is further used for controlling the clamping block to be away from the rack and not to be clamped with the rack. The remote control device is used for limiting the remote control range in the maintenance process and improving the safety.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance platforms, and particularly relates to an inspection and maintenance platform for the lower frame. Background Technique

[0002] The lower frame refers to the supporting component connected to the foundation under the rotor of a vertical hydro-generator, and is usually used to install a thrust bearing and a lower guide bearing. The inspection and maintenance platform located below the lower frame is a working platform for facilitating smooth access to the lower frame and is also the main construction passage for entering the lower frame.

[0003] Workers need to perform maintenance operations on the inspection and maintenance platform. A protective fence is provided at the edge of the inspection and maintenance platform to enhance the safety during the maintenance process. However, when performing maintenance at different positions inside the lower frame, different height requirements for the protective fence are needed.

[0004] Currently, the height of the protective fence of the inspection and maintenance platform is electrically adjustable, and the control methods include remote adjustment and console adjustment. The purpose of console adjustment is to facilitate maintenance during work, while remote adjustment is for auxiliary adjustment of the unreset protective fence before and after maintenance. During the maintenance process, both console adjustment and remote adjustment control methods have the problem that accidental touch may cause the protective fence to suddenly drop, resulting in safety issues. Content of the Utility Model

[0005] The utility model provides an inspection and maintenance platform for the lower frame, which restricts remote adjustment and console adjustment during the maintenance process and improves safety.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0007] An inspection and maintenance platform for the lower frame includes a platform body and a protective fence. A ladder extending downward is installed on the platform body, and a plurality of fence sleeves are installed at the edge of the platform body. The bottom of the vertical rod of the protective fence is slidably connected in the fence sleeve; a lifting component is installed in the fence sleeve, and the lifting part of the lifting component is connected to the bottom of the vertical rod; a vertical rack is arranged in the fence sleeve, the tooth direction of the rack is obliquely upward, a vertical groove is arranged on the side surface of the lower end of the vertical rod, a clamping block is hinged in the vertical groove, the clamping block is arranged obliquely downward, the clamping block is connected to the vertical rod through an elastic member, and the clamping block is clamped with the rack so that the vertical rod can rise but not fall; it further includes a console for controlling the lifting component to rise or fall; it further includes a remote control device, the remote control device is signal-connected to the console, and the remote control device is only used to control the lifting component to rise through the console; an electromagnetic block is arranged on the side surface of the vertical rod, and an armature is arranged on the clamping block; the console is further used to control the electromagnetic block to be energized, so that after the electromagnetic block attracts the armature, the clamping block moves away from the rack and no longer clamps with the rack.

[0008] Furthermore, a support plate is provided on the surface of the platform body, a pressure sensor is installed at the bottom of the support plate, and the pressure sensor is connected to the controller and then connected to the signal receiver of the lifting assembly; after the pressure sensor detects a certain weight, the controller disconnects the signal receiver.

[0009] Preferably, the elastic member is a supporting spring.

[0010] Preferably, the lifting component is an electric push rod, the driving end of the electric push rod is fixedly mounted at the bottom of the fence casing, and the output end of the electric push rod abuts against the bottom of the vertical rod.

[0011] Furthermore, it also includes a ladder fence, wherein a plurality of fence sleeves are installed at the edge of the ladder, the bottom of the ladder fence is slidably connected to the fence sleeves at the edge of the ladder, and the ladder fence is fixedly connected to the protective fence.

[0012] Furthermore, a pressure sensor is installed on the block, and the pressure sensor is located on a side close to the rack and is used to detect the pressure between the block and the rack; the pressure sensor is electrically connected to the console.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] The remote control device can only operate the lifting component to rise, and the console can control the lifting of the lifting component. However, the rack and the block limit the descent of the protective fence. The console needs to energize the electromagnetic block to remove the restriction and provide safety protection. In addition, the remote control device can reset the unreset protective fence before and after maintenance by raising the protective fence, without accidental touch, avoiding the safety problem of accidental touch of remote adjustment during maintenance, which may cause the protective fence to suddenly drop. The console adjustment needs to energize the electromagnetic block before the protective fence can be lowered to avoid safety problems caused by accidental touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structure diagram of the utility model.

[0016] Figure 2 This is a cross-sectional view of the fence casing.

[0017] Figure 3 for Figure 2 A is an enlarged view of the middle image.

[0018] The meanings of the numbers in the figure are: 1-platform body, 2-fence casing, 3-protective fence, 31-vertical slot, 4-ladder, 5-electric push rod, 6-rack, 7-block, 8-support spring. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model, so as to have a further understanding of the concept of the present utility model, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects brought about.

[0020] As Figure 1 , Figure 2 and Figure 3 shown, an inspection and maintenance platform for the lower frame includes a platform body 1 and a protective fence 3. A ladder 4 extending downward is installed on the platform body 1. A plurality of fence sleeves 2 are installed at the edge of the platform body 1. The bottom of the vertical rod of the protective fence 3 is slidably connected in the fence sleeve 2; a lifting assembly is installed in the fence sleeve 2, and the lifting part of the lifting assembly is connected to the bottom of the vertical rod; a vertical rack 6 is arranged in the fence sleeve 2, the tooth direction of the rack 6 is obliquely upward, a vertical groove 31 is arranged on the side of the lower end of the vertical rod, a clamping block 7 is hinged in the vertical groove 31, the clamping block 7 is arranged obliquely downward, the clamping block 7 is connected to the vertical rod through an elastic member, and the clamping block 7 is clamped with the rack 6, so that the vertical rod can rise but not fall; it also includes a control console for controlling the lifting assembly to rise or fall; it also includes a remote control device, and the remote control device is signal-connected to the control console. The remote control device is only used to control the lifting assembly to rise through the control console; an electromagnet is arranged on the side of the vertical rod, and an armature is arranged on the clamping block 7; the control console is also used to control the electromagnet to be energized, so that after the electromagnet attracts the armature, the clamping block 7 moves away from the rack 6 and no longer clamps with the rack 6.

[0021] The purpose of the present utility model is to limit the range of remote control during the maintenance process and limit the control of the control console, so as to avoid the safety problem that the accidental touch during the maintenance process causes the protective fence 3 to suddenly drop due to the drop of the protective fence 3.

[0022] The improvement of the present utility model lies in that: The remote control device located outside the platform body 1 can only perform the ascending operation on the lifting component, and the console on the platform body 1 can perform the lifting control on the lifting component, thereby adjusting the height of the protective fence 3 to achieve the control purposes of the two control methods. The purpose of the console adjustment is to facilitate maintenance during work, while the remote control device is used for auxiliary adjustment of the unreset protective fence 3 before and after maintenance. The vertical rods of the protective fence 3 of the present utility model are slidably connected in the fence sleeves 2, and are restricted by the racks 6 in the fence sleeves 2 and the blocks 7 hinged on the vertical rods, so that during the process of the console adjusting the lifting of the protective fence 3, the protective fence 3 can be raised but cannot be lowered. The console is connected to the circuit where the electromagnet block is located, and the state of the electromagnet block can be changed by energizing and de-energizing the electromagnet block. When the electromagnet block is energized, it generates a magnetic force to attract the armature, and the armature overcomes the elastic force of the elastic member and approaches the electromagnet block, thereby causing the block 7 to disengage from the rack 6, and the rack 6 no longer restricts the descent of the protective fence 3. The result caused by the above structure is that the remote control device can only control the ascent of the protective fence 3, and thus the remote control device can perform the reset operation on the unreset protective fence 3 before and after maintenance by raising the protective fence 3 without accidental touch. The console can control the ascent and descent of the protective fence 3, but the descent operation of the protective fence 3 requires prior energization of the electromagnet block to release the restriction before it can be performed, avoiding the safety problem of the sudden descent of the protective fence 3 caused by accidental touch during the maintenance process.

[0023] Further, a support plate is provided on the surface of the platform body 1, a pressure sensor is installed at the bottom of the support plate, and the pressure sensor is connected to a controller and then to the signal receiver of the lifting component; the pressure sensor detects the pressure data value and transmits it to the controller, and the controller judges whether there is a person according to the preset range. When the pressure data value exceeds the preset value, the signal receiver is disconnected. The pressure sensor is provided to detect whether there is a person on the platform body 1. When there is a person on the platform body 1, the signal receiver of the electric push rod 5 is disconnected, and the remote control device loses control, making the adjustment of the protective fence 3 during the maintenance process safer and not affecting the reset operation of the remote control device in the unmanned state.

[0024] Preferably, the elastic member is a support spring 8. The support spring 8 has the ability to be compressed and also has the supporting ability after the block 7 is engaged with the rack 6, avoiding the loss of restriction of the block 7.

[0025] The lifting component is an electric push rod 5, and the driving end of the electric push rod 5 is fixedly installed at the bottom inside the fence sleeve 2, and the output end of the electric push rod 5 abuts against the bottom of the vertical rod.

[0026] Further, it further includes a ladder 4 fence. A plurality of fence sleeves 2 are installed on the edge of the ladder 4. The bottom of the ladder fence is slidably connected to the fence sleeve 2 on the edge of the ladder 4, and the ladder fence is fixedly connected to the protective fence 3. The ladder fence is connected to the protective fence 3, so that the ladder fence and the protective fence 3 are adjusted together.

[0027] Further, a vertical groove 31 is provided on the side surface of the vertical rod of the protective fence 3, and the clamping block 7 and the elastic member are both installed in the vertical groove 31.

[0028] Further, a pressure sensor is installed on the clamping block 7. The pressure sensor is located on the side close to the rack 6 and is used to detect the pressure between the clamping block 7 and the rack 6; the pressure sensor is electrically connected to the console. The pressure sensor is provided. When the clamping block 7 restricts the descent of the protective fence 3, the pressure sensor detects the pressure value and feeds it back to the console to stop the descent operation of the electric push rod 5, so as to avoid damaging the clamping block 7.

[0029] In the description of the present invention, the terms "connection" and "fixation" may be fixed connection, machining, welding, or mechanical connection. The specific meanings of the above terms in the present invention should be understood according to the specific situation.

[0030] In the description of the present invention, terms such as "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lower frame inspection and maintenance platform, characterized in that: The platform comprises a platform body (1) and a protective fence (3), wherein a ladder (4) extending downward is installed on the platform body (1), a plurality of fence sleeves (2) are installed on the edge of the platform body (1), and the bottom of the vertical rod of the protective fence (3) is slidably connected in the fence sleeve (2); a lifting assembly is installed in the fence sleeve (2), and the lifting part of the lifting assembly is connected to the bottom of the vertical rod; A rack (6) is arranged in a vertical direction in the fence sleeve (2), the teeth of the rack (6) are inclined upward, a vertical groove (31) is arranged on the side of the lower end of the vertical rod, a clamping block (7) is hinged in the vertical groove (31), the clamping block (7) is arranged obliquely downward, the clamping block (7) and the vertical rod are connected by an elastic member, and the clamping block (7) is clamped with the rack (6), so that the vertical rod can be raised but cannot be lowered; Also included is a control console for controlling the lifting assembly to rise or fall; It also includes a remote control device, which is connected to the control console signal, and the remote control device is only used to control the lifting assembly to rise through the control console; An electromagnetic block is arranged on the side of the vertical rod, and an armature is arranged on the clamping block (7); the control console is also used to control the electromagnetic block to be energized, so that after the electromagnetic block attracts the armature, the clamping block (7) moves away from the rack (6) and is no longer clamped with the rack (6).

2. The lower rack inspection and maintenance platform according to claim 1 is characterized in that: A support plate is arranged on the surface of the platform body (1), a pressure sensor is installed at the bottom of the support plate, and the pressure sensor is connected to a controller and then connected to a signal receiver of the lifting component; after the pressure sensor detects a certain weight, the controller disconnects the signal receiver.

3. The lower frame inspection and maintenance platform according to claim 1 is characterized in that: The elastic member is a supporting spring (8).

4. The lower frame inspection and maintenance platform according to claim 1 is characterized in that: The lifting component is an electric push rod (5), the driving end of the electric push rod (5) is fixedly mounted on the bottom of the fence sleeve (2), and the output end of the electric push rod (5) is abutted against the bottom of the vertical rod.

5. The lower frame inspection and maintenance platform according to claim 1 is characterized in that: It also comprises a ladder fence, wherein a plurality of fence sleeves are installed on the edge of the ladder (4), the bottom of the ladder fence is slidably connected to the fence sleeves (2) on the edge of the ladder (4), and the ladder fence is fixedly connected to the protective fence (3).

6. The lower frame inspection and maintenance platform according to claim 1, characterized in that: A pressure sensor is mounted on the block (7), the pressure sensor being located on a side close to the rack (6) and used to detect the pressure between the block (7) and the rack (6); the pressure sensor is electrically connected to the console.

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