Scissor-fork platform laser protective fence
By designing a rotatable laser sensor and an automatically closing laser protective fence on the scissor lift platform, the problems of limited laser detection range and high setup costs are solved, enabling wider detection and safer laser use.
Patent Information
- Application Number
- CN202520142529.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing laser sensors for scissor lift platforms have limited detection range and high setup costs, and laser radiation is harmful to workers' health.
A design includes a rotatable laser sensor and a laser protective fence. The laser sensor is oriented by a rotating shaft and a bevel structure, and is fixed by a mounting plate and clamping blocks. The laser protective cavity is automatically sealed by a movable shell to prevent laser radiation.
It expands the detection range of the laser sensor, simplifies the installation process, reduces setup costs, and effectively prevents laser radiation from harming workers.
Smart Images
Figure CN223892404U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to a protective fence, concretely relates to a shearing fork platform laser protective fence. BACKGROUND
[0002] Shearing fork platform is usually used for high-altitude operation, and laser sensors are usually installed on the shearing fork platform to accurately measure the lifting height of the operation platform when operation is carried out on the shearing fork platform, so that signals can be sent in time when the platform approaches or reaches the upper limit of the set safety height to stop the platform from continuing to rise, or the operation platform is accurately stopped at a fixed height to facilitate the work of workers, and the surrounding buildings or obstacles are detected to avoid collision and play a protective role.
[0003] During actual operation, the irradiation angle of the laser sensor is fixed, and there is limitation for detection in different directions, the laser detection range is small, the laser sensor needs to be disassembled and reinstalled, assembly is troublesome and time-consuming, and the setting cost of the laser sensor is increased. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a shearing fork platform laser protective fence, which solves the problems of the existing technology, such as limited laser detection range and high setting cost.
[0005] The above technical purpose of the utility model is mainly solved through the following technical scheme: a shearing fork platform laser protective fence, comprising an operation platform, the operation platform comprises side frames that are mutually enclosed, a plurality of laser sensors are arranged on the outer side of the side frames, an installation plate that can be connected with the horizontal rods or vertical rods of the side frames is arranged on the end face of the laser sensor, a rotating shaft that is rotationally connected with the installation plate is arranged on the end face of the laser sensor, first and second inclined surfaces are respectively arranged on the two sides of the rotating shaft in the radial direction of the end face of the laser sensor, a top column that extends towards the first inclined surface and is threadedly connected with the installation plate is arranged on the installation plate, a groove is arranged on the second inclined surface, and a first extension spring that abuts against the installation plate is arranged in the groove.
[0006] As a further preferred technical scheme of the utility model, first and second clamping blocks that can clamp the horizontal rods or vertical rods of the side frames in cooperation with each other are arranged on the installation plate, the first and second clamping blocks are connected through bolts, and two first connecting plates that are rotationally connected with the ends of the first and second clamping blocks are arranged on the end face of the installation plate.
[0007] As a further preferred technical solution of this utility model; the inner side of the side frame is provided with a laser protection cavity for surrounding the laser equipment. The laser protection cavity is composed of multiple protective plates that surround each other and are connected to the side frame. The top of the laser protection cavity is open. The top of the protective plate is provided with an arc-shaped protective shell on the side of the side frame. The protective shell is provided with a movable shell for controlling the opening and closing of the laser protection cavity.
[0008] As a further preferred technical solution of this utility model, the top two sides of the protective plate are respectively provided with semi-circular side plates with part of the arc edge connected to the protective shell, and the other part of the arc edge of the side plate is movably connected to the inner arc surface of the movable shell.
[0009] As a further preferred technical solution of this utility model, a slide rail is provided on the arc surface of the side plate connected to the movable shell, and a slide groove that cooperates with the slide rail is provided on the arc surface of the inner side of the movable shell.
[0010] As a further preferred technical solution of this utility model, the protective shell is provided with a mating groove for the movable shell to move and cooperate with the movable shell. After the movable shell moves outward from inside the protective shell, it abuts against the upper end surface of one of the protective plates.
[0011] As a further preferred technical solution of this utility model; the inner arc surface of the movable housing is provided with a tooth group arranged along an arc trajectory, the inner side of the protective housing is provided with a clearance groove for the tooth group to extend out, and the inner side of the protective housing is provided with a transmission gear that meshes with the tooth group.
[0012] As a further preferred technical solution of this utility model, the transmission gear is provided with a rotating shaft in the middle, and the two ends of the rotating shaft are connected to the inner side of the protective shell through a second connecting plate. A drive motor for driving the transmission gear to rotate is provided on the outer side of the second connecting plate.
[0013] As a further preferred technical solution of this utility model, the upper surface of the protective plate that can abut against the movable shell is provided with a slot that matches the end of the movable shell, a movable plate that can move up and down is provided in the slot, and a plurality of second telescopic springs connected to the bottom of the slot are provided at the bottom of the movable plate.
[0014] Therefore, this utility model has the advantages of increasing the adjustability of the laser sensor, wider applicability, simple adjustment, and reducing the setting cost of the laser sensor. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 yes Figure 1 A schematic diagram of the structure of the laser sensor in the diagram;
[0017] Figure 3 yes Figure 1 A schematic diagram of the composition and structure of the laser protection cavity in the image;
[0018] Figure 4 yes Figure 3 A structural sectional view.
[0019] Reference numerals: Laser sensor 1, Mounting plate 11, First clamping block 12, Second clamping block 13, Rotating shaft 14, First inclined surface 15, Second inclined surface 16, Top column 17, First telescopic spring 18, First connecting plate 111, Working platform 2, Side frame 21, Laser protective cavity 4, Protective plate 41, Protective housing 42, Movable housing 43, Side plate 44, Slide rail 441, Slide groove 431, Mating groove 421, Gear assembly 432, Relief groove 422, Transmission gear 423, Rotating shaft 424, Second connecting plate 425, Drive motor 426, Slot 433, Movable plate 45, Second telescopic spring 451. Detailed Implementation
[0020] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0021] like Figures 1-2As shown, a laser safety fence for a scissor lift platform includes a work platform 2. The work platform 2 includes interconnected side frames 21. Multiple side frames 21 enclose the work platform to form a fence, protecting the workers. Multiple laser sensors 1 are installed on the outer side of the side frames 21. Each laser sensor 1 consists of a laser, a laser detector, and a measurement circuit, helping to determine the accurate position of the work platform 2 in space. The end face of each laser sensor 1 has a mounting plate 11 that can be connected to the horizontal or vertical bars of the side frames 21. A rotating shaft 14 is rotatably connected to the mounting plate 11 on the end face of each laser sensor 1. A first inclined surface 15 and a second inclined surface 16 are respectively provided on the radial sides of the end face of the laser sensor 1 corresponding to the rotating shaft 14. After the laser sensor 1 is fixed to the outer wall of the side frames via the mounting plate 11, the first and second inclined surfaces 15 and 16 form a gap with the mounting plate 11. The gap allows the laser sensor 1 to be rotated around the rotation axis 14, tilting it in the desired direction. This increases the adjustability of the laser sensor 1's detection direction, enabling timely adjustment of its irradiation direction according to actual needs. This broadens its applicability, facilitates adjustment, and reduces the setup cost of the laser sensor 1. A top post 17 extends onto the mounting plate 11, extending towards the first inclined surface 15 and threadedly connected to it. A groove is provided on the second inclined surface 16, containing a first telescopic spring 18 that abuts against the mounting plate 11. The first telescopic spring 18 acts on the second inclined surface 16, moving it away from the mounting plate 11, thus abutting the first inclined surface 15 against the mounting plate 11. The threaded top post 17 can then push the first inclined surface 15 to quickly adjust the orientation of the laser sensor 1. This makes the laser sensor 1 easier to use and maintains a stable orientation, preventing it from becoming loose and flipping over.
[0022] like Figure 2As shown, the mounting plate 11 is provided with a first clamping block 12 and a second clamping block 13 that can cooperate to clamp the horizontal or vertical bars of the side frame 21. The first clamping block 12 and the second clamping block 13 are connected by bolts. The end face of the mounting plate 11 is provided with two first connecting plates 111 that are rotatably connected to the ends of the first clamping block 12 and the second clamping block 13, respectively. The first clamping block 12 and the second clamping block 13 are symmetrically arranged and can cooperate to clamp the horizontal or vertical bars on the side frame 21 to fix the laser sensor 1. The two first connecting plates 111 can increase the guide limit during installation. The mounting plate 11 is positioned so that it can be accurately and stably placed on the horizontal or vertical bar of the side frame 21, and the connection between the first clamping block 15 and the second clamping block 16 and the side frame 21 is strengthened. At the same time, the rotatable parts of the first clamping block 15 and the second clamping block 16 make way for the entry of the horizontal or vertical bar of the side frame 21. After the horizontal or vertical bar of the side frame 21 is fully inserted between the first clamping block 15 and the second clamping block 16, the first clamping block 15 and the second clamping block 16 can be flipped to quickly clamp onto the side frame 21 and fixed by bolt connection, making the installation of the laser sensor simpler and faster.
[0023] like Figure 1 , 3 As shown in Figure 4, the working environment on the scissor lift platform is complex. Not only does it require external laser sensors for laser detection, but laser equipment is also used inside the platform 2 for laser cutting, laser welding, and other processing operations. These operations generate significant laser radiation, which can cause harm to the human body. If workers are directly and continuously exposed to laser radiation, it can negatively impact their health. The side frame 21 has a laser protection cavity 4 inside to enclose the laser equipment. The laser protection cavity 4 is located inside the enclosure formed by the side frame 21 and is positioned near the edge. Laser equipment (such as laser cutting equipment or laser welding equipment) is installed inside the laser protection cavity 4. The laser protection cavity 4 is composed of multiple interconnected protective plates 41 connected to the side frame 21. The protective plates 41 enclose the laser protection cavity 4, protecting it from the laser radiation inside. The equipment surrounds and blocks the laser to prevent harm to workers, thus providing laser protection. The top of the laser protection cavity 4 is open, allowing workers to insert themselves for operation and preparation before laser work. The laser protection cavity 4 can then be sealed by the protective shell 42 and the movable shell 43 to block laser radiation. The laser equipment operates automatically inside the laser protection cavity 4. The top of the protective plate 41, near the side frame 21, has an arc-shaped protective shell 42. The protective shell 42 has a movable shell 43 for controlling the opening and closing of the laser protection cavity 4. The protective shell 42 is connected to the protective plate 41, and the movable shell 43 can move relative to the protective shell 42. The protective plate 41, the protective shell 42, and the movable shell 43 are all made of laser-resistant materials, which can block laser radiation and ensure the health of workers.
[0024] like Figures 3-4 As shown, the top two sides of the protective plate 41 are respectively provided with semi-circular side plates 44, with part of their arc edges connected to the protective shell 42. The other part of the arc edge of the side plate 44 is movably connected to the inner arc surface of the movable shell 43. The two side plates 44 are semi-circularly provided on the top two sides of the protective plate 41, and the protective shell 42 is provided on the rear half of the two side plates 44, forming an arc-shaped cover structure. The movable shell 43 moves along the arc trajectory on the protective shell 42, forming a control function for opening and closing the laser protection cavity 4. After the movable shell 43 is completely removed, it cooperates with the protective shell 42 to completely seal the laser protection cavity 4. The side plate 44 has a slide rail 441 on its arc surface connected to the movable housing 43, which is arranged along an arc-shaped trajectory. The inner arc surface of the movable housing 43 has a groove 431 that mates with the slide rail 441. The inner arc surface of the movable housing 43 slides with the slide rail 441 on the arc surface of the side plate 44 through the groove 431, so as to guide and limit the movement of the movable housing 43 and seal the gap between the movable housing 43 and the side plate 44, thereby sealing the laser protection cavity 4. The protective housing 42 has a mating groove inside for the movable housing 43 to move and mate with the movable housing 43. 421, the mating groove 421 is used to accommodate the movable housing 43, reducing the volume occupied by the device, reducing its weight, and reducing the load on the platform. The inner arc surface of the movable housing 43 is provided with a gear set 432 arranged along an arc trajectory. The inner side of the protective housing 42 is provided with a clearance groove 422 for the gear set 432 to extend out. The inner side of the protective housing 42 is provided with a transmission gear 423 that meshes with the gear set 432. A rotating shaft 424 is provided in the middle of the transmission gear 423. Both ends of the rotating shaft 424 are connected to the inner side of the protective housing 42 through a second connecting plate 425. The outer side of the second connecting plate 425 is provided with a drive gear... The drive motor 426, which drives the rotation of the moving gear 423, can be started after the laser equipment and laser-processed materials are ready. The drive motor 426 drives the transmission gear 423 to rotate. The rotation of the transmission gear 423 can drive the movable housing 43 to automatically move out of the mating groove 421 through the gear group 432 until the end of the movable housing 43 abuts against the upper surface of the protective plate 41, thereby completing the automatic sealing of the laser protective cavity 4 by the movable housing 43, reducing the direct contact between the staff and the laser protective cavity 4, and reducing the impact of laser radiation on the health of the staff.
[0025] like Figures 3-4As shown, after the movable housing 43 moves outward from the protective housing 42, it abuts against the upper surface of one of the protective plates 41. The upper surface of the protective plate 41 that abuts against the movable housing 43 has a slot 433 that mates with the end of the movable housing 43. After the movable housing 43 moves out of the mating slot 421 of the protective housing 42, the end of the movable housing 43 contacts and embeds into the opening of the slot 433 to increase the sealing and improve the protective effect. The slot 433 has a movable plate 45 that can move up and down. The bottom of the movable plate 45 has multiple connections to the bottom of the slot 433. The second telescopic spring 451 is connected to the movable plate 45. Under the action of the second telescopic spring 451, its upper end face remains flush with the upper end face of the protective plate 41. When the movable housing 43 moves into the slot 433, the movable plate 45 moves downward under force, the second telescopic spring 451 contracts, and the upper end face of the movable plate 45 abuts against the end face of the movable housing 43, increasing the sealing and thus completing the sealing of the laser protective cavity 4. After the movable housing 43 moves in the opposite direction so that its end leaves the slot 433, the movable plate 45 automatically moves back under the action of the second telescopic spring 451.
[0026] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.
Claims
1. A laser protective fence for a scissor lift platform, comprising a working platform (2), wherein the working platform (2) includes mutually enclosing side frames (21), characterized in that: Multiple laser sensors (1) are provided on the outer side of the side frame (21). The end face of the laser sensor (1) is provided with a mounting plate (11) that can be connected to the horizontal or vertical bar of the side frame (21). The end face of the laser sensor (1) is provided with a rotating shaft (14) that is rotatably connected to the mounting plate (11). The end face of the laser sensor (1) is provided with a first inclined surface (15) and a second inclined surface (16) on the radial sides corresponding to the rotating shaft (14). A top column (17) extending toward the first inclined surface (15) and threadedly connected to the mounting plate (11) is provided on the mounting plate (11). A groove is provided on the second inclined surface (16). A first telescopic spring (18) abutting against the mounting plate (11) is provided in the groove.
2. The laser protective fence for a scissor lift platform according to claim 1, characterized in that: The mounting plate (11) is provided with a first clamping block (12) and a second clamping block (13) that can cooperate with each other to clamp the horizontal or vertical bars of the side frame (21). The first clamping block (12) and the second clamping block (13) are connected by bolts. The end face of the mounting plate (11) is provided with two first connecting plates (111) that are rotatably connected to the ends of the first clamping block (12) and the second clamping block (13).
3. The laser protective fence for a scissor lift platform according to claim 1, characterized in that: The side frame (21) is provided with a laser protection cavity (4) for surrounding the laser equipment. The laser protection cavity (4) is composed of multiple protective plates (41) that surround each other and are connected to the side frame (21). The top of the laser protection cavity (4) is open. The top of the protective plate (41) is provided with an arc-shaped protective shell (42) on the side near the side frame (21). The protective shell (42) is provided with a movable shell (43) for controlling the opening and closing of the laser protection cavity (4).
4. A laser protective fence for a scissor lift platform according to claim 3, characterized in that: The top two sides of the protective plate (41) are respectively provided with a semi-circular side plate (44) with a part of the arc edge connected to the protective shell (42), and the other part of the arc edge of the side plate (44) is movably connected to the inner arc surface of the movable shell (43).
5. A laser protective fence for a scissor lift platform according to claim 4, characterized in that: The side plate (44) is provided with a slide rail (441) on the arc surface connected to the movable housing (43) and the slide rail (431) is provided with a slide groove (431) that cooperates with the slide rail (441) on the arc surface inside the movable housing (43).
6. A laser protective fence for a scissor lift platform according to claim 3, characterized in that: The protective housing (42) has a mating groove (421) inside for the movable housing (43) to move and to cooperate with the movable housing (43). After the movable housing (43) moves outward inside the protective housing (42), it abuts against the upper surface of one of the protective plates (41).
7. A laser protective fence for a scissor lift platform according to claim 3, characterized in that: The inner arc surface of the movable housing (43) is provided with a toothed group (432) arranged along an arc trajectory. The inner side of the protective housing (42) is provided with a relief groove (422) for the toothed group (432) to extend. The inner side of the protective housing (42) is provided with a transmission gear (423) that meshes with the toothed group (432).
8. A laser protective fence for a scissor lift platform according to claim 7, characterized in that: The transmission gear (423) has a rotating shaft (424) in the middle. The two ends of the rotating shaft (424) are connected to the inner side of the protective shell (42) through the second connecting plate (425). The outer side of the second connecting plate (425) is provided with a drive motor (426) for driving the transmission gear (423) to rotate.
9. A laser protective fence for a scissor lift platform according to claim 3, characterized in that: The upper surface of the protective plate (41) that can abut against the movable housing (43) is provided with a slot (433) that cooperates with the end of the movable housing (43). The slot (433) is provided with a movable plate (45) that can move up and down. The bottom of the movable plate (45) is provided with a plurality of second telescopic springs (451) that are connected to the bottom of the slot (433).