Safety protection device arranged on support arm of lower rack of power station unit

Abstract

The utility model provides a safety protection device arranged on a support arm of a lower rack of a power station unit, the support arm of the lower rack of the power station unit comprises a connecting seat and a fixing plate which is arranged on the connecting seat, transversely extends outwards and is used for forming a working table top, and the safety protection device comprises a safety protection plate which is arranged on the fixing plate and is used for fixing the working table top. The protection mechanism is arranged on the fixing plate and extends upwards, and the protection mechanism is configured to be allowed to be arranged along the outline of the fixing plate and used for forming a sealed working cavity together with the connecting base. According to the arrangement mode, an operator can work in the working cavity, and transverse outward movement of the operator can be limited through the protection mechanism. Therefore, the personal safety of operators can be guaranteed. Moreover, under the arrangement mode, only the protection mechanism needs to be relatively fixed on the fixing plate, and the operation difficulty is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of safety protection technology, and in particular to a safety protection device installed on the support arm of the lower frame of a power plant unit. Background Technology

[0002] During the maintenance and upgrading of hydropower station generating units, operators typically need to work on the support arms of the lower frame of the generating unit. Specifically, for example... Figure 1 As shown, operators need to work on the fixed plate 102 that extends laterally outward along the connecting seat 101. However, because the lower frame support arm is usually located at a high position and lacks effective protective measures, operators face a significant risk of falling off the edge when performing operations. This risk not only threatens the personal safety of the operators but may also affect the smooth progress of maintenance work.

[0003] In existing technologies, to ensure the personal safety of workers, safety nets are typically installed around the outside of the fixed plate 102 to protect the operators on the plate. While this method can provide some degree of safety, the safety nets have limited strength and stability and cannot withstand significant impacts. Furthermore, the installation process is complex, requiring workers to secure and fasten the nets at height, increasing the difficulty of the operation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a safety protection device installed on the lower frame support arm of a power plant unit. To achieve the above objectives, this utility model adopts the following technical solution:

[0005] A safety protection device is installed on the lower frame support arm of a power plant unit. The lower frame support arm includes a connecting seat and a fixing plate disposed on the connecting seat and extending laterally outward to form a work surface.

[0006] The safety protection device includes a protective mechanism disposed on the fixed plate and extending upward, the protective mechanism being configured to allow it to be disposed along the contour of the fixed plate to form a sealed working cavity together with the connecting seat.

[0007] Furthermore, the protective mechanism includes a protective part for forming a sealed working cavity with the connecting seat, and at least one snap-fit ​​part disposed on the protective part and configured to allow relative fixation with the fixing plate.

[0008] Furthermore, the snap-fit ​​portion includes a first snap-fit ​​member and a second snap-fit ​​member disposed opposite to each other, and a connector disposed between the first snap-fit ​​member and the second snap-fit ​​member for connecting the first snap-fit ​​member and the second snap-fit ​​member together, wherein the first snap-fit ​​member and the second snap-fit ​​member together constitute a snap-fit ​​area that allows snap-fitting on the lateral outer side of the fixing plate.

[0009] Furthermore, the protective mechanism also includes a fixing part that extends through the second snap-fit ​​member into the snap-fit ​​area and is configured to allow up-and-down movement along the second snap-fit ​​member, so as to snap the fixing plate together with the first snap-fit ​​member.

[0010] Furthermore, the fixing part includes a threaded rod passing through the second snap-fit ​​member, and the second snap-fit ​​member is also provided with a threaded hole, which is configured to cooperate with the threaded rod to allow the threaded rod and the second snap-fit ​​member to be fixed together relative to each other.

[0011] Furthermore, a screwing element is provided at the free end of the threaded rod, and the screwing element is configured in any shape to facilitate the application of force to it.

[0012] Furthermore, the protective section is configured as three pieces with the same curvature as the fixed plate, and adjacent protective sections are detachably connected together.

[0013] Furthermore, the protective part includes a protective plate and a support frame arranged circumferentially along the protective plate, on which a connecting mechanism is detachably provided, the connecting mechanism being configured to allow adjacent protective parts to be detachably connected together.

[0014] Furthermore, the connecting mechanism includes a first clamping member, an adjusting member, and a second clamping member connected in sequence. Both the first clamping member and the second clamping member are configured to accommodate the support frame. There are two connecting mechanisms, which are distributed in a relatively opposite manner so that the two ends respectively form cavities to accommodate adjacent support frames. An adjusting mechanism is also provided on the adjusting member, which is configured to allow adjustment of the relative distance between the two relatively arranged connecting mechanisms.

[0015] Furthermore, the adjusting mechanism includes bolts passing through two opposing connecting mechanisms, and nuts that cooperate with the bolts and allow abutment against the adjusting member. The nuts are configured to move along the bolt axis to adjust the relative distance between the bolt and the nut.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This invention features an upwardly extending protective mechanism, which is fixed to a fixed plate. The protective mechanism is also configured to allow distribution along the contour of the fixed plate. This arrangement allows the protective mechanism and the connecting seat to form a sealed working cavity. This configuration allows the operator to work within the working cavity, and the protective mechanism also restricts the operator's lateral outward movement, thus ensuring the operator's safety. Furthermore, this configuration simplifies operation by requiring only the protective mechanism to be fixed to the fixed plate. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0019] Figure 1 This is a schematic diagram of the overall structure of the lower frame support arm of a power plant unit in the existing technology;

[0020] Figure 2 This is a schematic diagram of the overall structure of the present invention combined with the lower frame support arm of the power plant unit in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the engaging and fixing parts in an embodiment of the present invention;

[0023] Figure 5 This is a top view schematic diagram of the connection mechanism and adjustment mechanism cooperating in an embodiment of the present utility model.

[0024] In the above figures: lower frame support arm 10, connecting seat 101, fixing plate 102, working cavity 20, protective mechanism 1, protective part 11, protective plate 111, support frame 112, insertion pipe 1121, railing 113, snap-fit ​​part 12, first snap-fit ​​piece 121, second snap-fit ​​piece 122, connecting piece 123, snap-fit ​​interval 124, mounting pin 125, mounting hole 1251, fixing part 13, threaded rod 131, screwing piece 132, connecting mechanism 2, first clamping piece 21, adjusting piece 22, second clamping piece 23, cavity 24, adjusting mechanism 3, bolt 31, nut 32. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0026] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed description of a safety protection device installed on the support arm of the lower frame of a power plant unit.

[0027] For convenience, the direction extending along the connector will be referred to as "vertical", "perpendicular" or similar terms, the direction perpendicular to "vertical" will be referred to as "horizontal", "horizontal" or similar terms, the direction along the snap-fit ​​part near the protective part will be referred to as "upward" or similar terms, and the direction along the protective part near the snap-fit ​​part will be referred to as "downward" or similar terms.

[0028] like Figure 1 As shown, the lower frame support arm 10 of the power plant unit includes a connecting seat 101 and a fixing plate 102 disposed on the connecting seat 101. In this embodiment, the fixing plate 102 is configured to extend laterally outward. In this way, the fixing plate 102 can form a workbench that allows operators to work on it. It should be noted that the connection method between the lower frame support arm 10 and the connecting seat 101 and the fixing plate 102 is well known to those skilled in the art.

[0029] Figure 2 , 3 The schematic diagram illustrates the overall structure of the safety protection device installed on the lower frame support arm of the power plant unit according to this utility model. (The remaining text appears to be incomplete and requires further context.) Figure 2 , 3 In the embodiment shown, the safety protection device installed on the lower frame support arm of the power plant unit includes a protection mechanism 1 installed on the fixed plate 102 and extending upward, the protection mechanism 1 being configured to allow installation along the contour of the fixed plate 102.

[0030] In this way, such as Figure 2 As shown, the protective mechanism 1 and the connecting seat 101 together form a sealed working cavity 20. With this arrangement, when an operator needs to work on the fixed plate 102, the operator can work within the working cavity 20, and the protective mechanism 1 can also restrict the operator's lateral outward movement. Therefore, the operator's personal safety can be guaranteed.

[0031] In one embodiment, such as Figure 3 As shown, the protective mechanism 1 includes a protective portion 11 for forming a sealed working cavity 20 with the connecting seat 101, and at least one snap-fit ​​portion 12 disposed on the protective portion 11 and fixedly attached to it. In this embodiment, the snap-fit ​​portion 12 is configured to allow it to be detachably fixed to the fixing plate 102.

[0032] In this way, the protective mechanism 1 can be connected to the fixed plate 102 when an operator needs to work on the fixed plate 102, ensuring the operator's safety. After the work is completed, the protective mechanism 1 can be removed from the fixed plate 102, thus preventing interference between the protective mechanism 1 and the frame support arm 10. This improves the practicality of the device.

[0033] In one embodiment, such as Figure 4 As shown, the snap-fit ​​portion 12 includes a first snap-fit ​​member 121 and a second snap-fit ​​member 122 disposed opposite to each other, and a connector 123 disposed between the first snap-fit ​​member 121 and the second snap-fit ​​member 122 for connecting the first snap-fit ​​member 121 and the second snap-fit ​​member 122 together, such that the first snap-fit ​​member 121 and the second snap-fit ​​member 122 together form a snap-fit ​​interval 124 that allows snap-fitting on the lateral outer side of the fixing plate 102.

[0034] In this way, such as Figure 4 As shown, when this device needs to be mounted on the fixed plate 102, the snap-fit ​​section 124 can be snapped onto the side of the fixed plate 102, and the snap-fit ​​section 124 and the fixed plate 102 abut against each other. This allows the protective mechanism 1 and the fixed plate 102 to be relatively fixed together, thereby enabling the protective mechanism 1 and the connecting seat 101 to jointly form a sealed working cavity 20.

[0035] In one embodiment, such as Figure 4 As shown, the protective mechanism 1 also includes a fixing part 13, which passes through the second snap-fit ​​member 122 and extends into the snap-fit ​​interval 124. The fixing part 13 is also configured to allow vertical movement along the second snap-fit ​​member 122. In this way, the height of the snap-fit ​​interval 124 formed by the fixing part 13 and the first snap-fit ​​member 121 can be adjusted, allowing the fixing part 13 and the first snap-fit ​​member 121 to jointly snap the fixing plate 102.

[0036] In this configuration, such as Figure 4 As shown, when it is necessary to install the protective mechanism 1 on the fixed plate 102, so that the protective mechanism 1 and the connecting seat 101 together form a sealed working cavity 20, firstly, a force is applied to the protective mechanism 1, thereby driving the protective mechanism 1 to move, and so that the snap-fit ​​section 124 is located on the fixed plate 102, and the first snap-fit ​​member 121 abuts against the lower end face of the fixed plate 102.

[0037] Furthermore, a fixing part 13 is provided on the second snap-fit ​​member 122, extending through the second snap-fit ​​member 122 into the snap-fit ​​interval 124. Simultaneously, a force is applied to the fixing part 13, causing it to move continuously downwards until its free end abuts against the upper surface of the fixing plate 102. At this point, the second snap-fit ​​member 122 restricts the movement of the fixing part 13. Thus, the fixing part 13 and the first snap-fit ​​member 121 can jointly snap the fixing plate 102, easily fixing the protective mechanism 1 and the fixing plate 102 together, thereby forming a sealed working cavity 20 between the protective mechanism 1 and the connecting seat 101.

[0038] In one embodiment, such as Figure 4 As shown, the fixing part 13 includes a threaded rod 131 passing through the second snap-fit ​​member 122. Furthermore, the second snap-fit ​​member 122 is also provided with a threaded hole (not shown in the figure), which is configured to mate with the threaded rod 131.

[0039] In this configuration, the threaded rod 131 can be rotated to move upwards or downwards along the second locking member 122. Furthermore, after the threaded rod 131 reaches a suitable position, its movement can be restricted by the second locking member 122. This allows the fixing part 13 and the first locking member 121 to stably engage with the fixing plate 102, thereby ensuring a stable relative fixation between the protective mechanism 1 and the fixing plate 102.

[0040] According to a preferred embodiment of the present invention, such as Figure 4 As shown, a screwing member 132 is also provided at the free end of the threaded rod 131. The screwing member 132 is constructed in any shape to facilitate the application of force to it. In this way, it is easy to apply force to the threaded rod 131, thereby enabling the threaded rod 131 to move in a convenient manner. This improves the working efficiency of connecting the protective mechanism 1 to the fixed plate 102.

[0041] In this configuration, when the protective mechanism 1 needs to be mounted on the fixed plate 102, and a sealed working cavity 20 is formed between the protective mechanism 1 and the connecting seat 101, firstly, a force is applied to the protective mechanism 1, thereby driving the protective mechanism 1 to move, and causing the snap-fit ​​section 124 to be located on the fixed plate 102, and the first snap-fit ​​member 121 to abut against the lower end face of the fixed plate 102.

[0042] Meanwhile, a threaded rod 131 is provided on the second snap-fit ​​member 122, and the threaded rod 131 passes through a threaded hole (not shown in the figure) on the second snap-fit ​​member 122 and engages with the threaded hole. Next, a circumferential force is applied to the screwing member 132 located on the threaded rod 131, so that the screwing member 132 drives the threaded rod 131 to rotate continuously.

[0043] During this process, the threaded rod 131 will continuously move downward along the second snap-fit ​​member 122 until the end face of the threaded rod 131 abuts against the fixing plate 102. This allows the fixing part 13 and the first snap-fit ​​member 121 to stably engage with the fixing plate 102, thereby ensuring a stable relative fixation between the protective mechanism 1 and the fixing plate 102, and ultimately enabling the protective mechanism 1 and the connecting seat 101 to jointly form a sealed working cavity 20.

[0044] In one embodiment, such as Figure 2 As shown, the protective parts 11 are arranged in three pieces with the same curvature as the fixing plate 102, and adjacent protective parts 11 are detachably connected together. In this way, the three protective parts 11 and the connecting seat 101 together form a sealed working cavity 20. With this arrangement, the sealed working cavity 20 can be constructed by assembly. It should be noted that the snap-fit ​​part 12 and the fixing part 13 are arranged corresponding to the protective parts 11. This reduces the workload of installing the protective mechanism 1 on the fixing plate 102.

[0045] In one embodiment, such as Figure 3 As shown, the protective part 11 includes a protective plate 111 and a support frame 112 arranged circumferentially along the protective plate 111. A connecting mechanism 2 is detachably provided on the support frame 112. The connecting mechanism 2 is configured to allow adjacent protective parts 11 to be detachably connected together.

[0046] In this embodiment, as Figure 5 As shown, the connecting mechanism 2 includes a first clamping member 21, an adjusting member 22, and a second clamping member 23 connected in sequence. Both the first clamping member 21 and the second clamping member 23 are configured to accommodate the support frame 112. Two connecting mechanisms 2 are provided, distributed in a relatively opposite manner, so that their ends respectively form cavities 24 to accommodate adjacent support frames. Simultaneously, an adjusting mechanism 3 is also provided on the adjusting member 22. The adjusting mechanism 3 is configured to allow adjustment of the relative distance between the two relatively arranged connecting mechanisms 2, thereby enabling the two connecting mechanisms 2 to stably connect adjacent protective parts 11 together.

[0047] In one embodiment, such as Figure 5 As shown, the adjustment mechanism 3 includes a bolt 31 passing through two oppositely arranged connecting mechanisms 2, and a nut 32 that cooperates with the bolt 31 and allows it to abut against the adjustment member 22. The nut 32 is configured to move along the axis of the bolt 31 to adjust the relative distance between the bolt 31 and the nut 32.

[0048] In this configuration, when it is necessary to connect two adjacent protective parts 11 together through the connecting mechanism 2, the connecting mechanism 2 is first set on the two adjacent protective parts 11, and the first clamping member 21 and the second clamping member 23 respectively abut against the two adjacent support frames 112.

[0049] Meanwhile, another connecting mechanism 2 is provided on the opposite side of the connecting mechanism 2, so that the two connecting mechanisms 2 together form a cavity 24 for accommodating adjacent support frames. At this time, the bolt 31 is passed through the two opposing adjusting members 22, and a nut 32 is provided at the free end of the bolt 31.

[0050] Then, a circumferential force is applied to the nut 32, causing it to move along the axial direction of the bolt 31. Once the bolt 32 is engaged with the adjusting member 22 on one side, a force will continue to be applied to the bolt 32.

[0051] At this time, the bolt 32 will continue to move along the axial direction of the bolt 31. During this process, the bolt 32 will drive the adjusting member 22, which is in contact with the bolt 32, to move closer to the other adjusting member 22. As a result, the relative distance between the two adjusting members 22 can be reduced, thereby reducing the relative distance between the first clamping member 21 and the other first clamping member 21, and between the second clamping member 23 and the other second clamping member 23.

[0052] In this way, the lateral distance of the cavity 24 can be reduced. This allows the two opposing connecting mechanisms 2 to stably connect adjacent support frames 112 together, thereby ensuring a stable connection between adjacent protective parts 11.

[0053] In one embodiment, such as Figure 4As shown, the snap-fit ​​portion 12 is configured to be detachably connected to the support frame 112. In this embodiment, an upwardly extending mounting pin 125 is provided on the second snap-fit ​​member 122. Simultaneously, a downwardly extending insertion tube 1121 is provided at the end of the support frame 112 located transversely to the protective plate 111. The insertion tube 1121 is configured to fit over the mounting pin 125 and allow for relative fixation with the mounting pin 125. In this way, the protective portion 11 and the snap-fit ​​portion 12 can be detachably connected. This facilitates the assembly and disassembly of the protective mechanism 1.

[0054] According to a preferred embodiment of the present invention, such as Figure 4 As shown, a mounting hole 1251 is also provided on the connecting pin 125. Simultaneously, a connecting hole (not shown) is provided on the insertion tube 1121. The mounting hole 1251 and the connecting hole are configured such that when the insertion tube 1121 is inserted into the mounting pin 125, the mounting hole 1251 and the connecting hole correspond to each other. Thus, the corresponding mounting holes 1251 and the connecting holes together form a space to accommodate the fixing pin (not shown). In this way, the fixing pin can be positioned on the corresponding mounting holes 1251 and the connecting holes, thereby fixing the protective part 11 and the snap-fit ​​part 12 together.

[0055] In one embodiment, such as Figure 3 As shown, the protective plate 111 is configured as a mesh plate. Specifically, several through holes are formed in the protective plate 111. In this way, the weight of the protective plate 111 can be reduced. Therefore, the labor intensity of the operator in installing the protective mechanism 1 can be reduced.

[0056] According to a preferred embodiment of the present invention, such as Figure 3 As shown, the protective part 11 also includes a railing 113, which is mounted on the support frame 112 and corresponds to the fixing part 13. The railing 113 is configured in any shape for easy gripping. In this way, when the protective mechanism 1 needs adjustment, a force can be applied to the railing 113 to drive the protective mechanism 1 to move.

[0057] In one embodiment, such as Figure 3 As shown, a lifting ring (not shown) is optionally provided on the railing 113. The lifting ring is configured to allow connection to lifting equipment (not shown). In this way, when the movable protective mechanism 1 needs to be installed on the fixed plate 102, the lifting equipment can be connected to the lifting ring, and a force can be applied to the lifting ring to drive the protective mechanism 1. This reduces the labor intensity of the operator installing the protective mechanism 1.

[0058] The operation of the safety protection device installed on the lower frame support arm of the power plant unit according to this utility model is as follows.

[0059] First, three pairs of snap-fit ​​parts 12 are provided on the fixing plate 102, such that the relative distance between each pair of snap-fit ​​parts 12 is approximately equal to the relative distance between the support frames 112 located transversely on the protective plate 111. Simultaneously, the snap-fit ​​intervals 124 on the snap-fit ​​parts 12 are positioned on the fixing plate 102, and the first snap-fit ​​member 121 abuts against the lower end face of the fixing plate 102. At this time, a threaded rod 131 is provided on the second snap-fit ​​member 122, and the threaded rod 131 passes through a threaded hole (not shown in the figure) on the second snap-fit ​​member 122, engaging with the threaded hole. Furthermore, a circumferential force is applied to a screwing member 132 located on the threaded rod 131, causing the screwing member 132 to continuously rotate the threaded rod 131.

[0060] During this process, the threaded rod 131 will continue to move downward along the second snap-fit ​​member 122 until the end face of the threaded rod 131 abuts against the fixing plate 102. This allows the fixing part 13 and the first snap-fit ​​member 121 to be stably snapped onto the fixing plate 102.

[0061] Next, the lifting equipment (not shown in the figure) is connected to the lifting ring (not shown in the figure), and a force is applied to the lifting ring (not shown in the figure) by the lifting equipment, thereby driving the protective part 11 to move, and causing the insertion tube 1121 on the protective part 11 to be fitted onto the mounting pin 125 on the snap-fit ​​part 12. During this process, the mounting hole 1251 on the mounting pin 125 will correspond to the connection hole on the insertion tube 1121. At this time, a fixing pin (not shown in the figure) is placed in the mounting hole 1251 and the connection hole, thereby connecting the protective part 11 and the snap-fit ​​part 12 together. As a result, the protective mechanism 1 can be stably mounted on the fixing plate 102.

[0062] Then, the other two protective parts 11 are hoisted using hoisting equipment (not shown in the figure), and both of the other two protective parts 11 are fixed together with the snap-fit ​​part 12. Then, the connecting mechanism 2 is set on the two adjacent protective parts 11, and the first clamping member 21 and the second clamping member 23 respectively abut against the two adjacent support frames 112.

[0063] Meanwhile, another connecting mechanism 2 is provided on the opposite side of the connecting mechanism 2, so that the two connecting mechanisms 2 together form a cavity 24 for accommodating adjacent support frames. At this time, the bolt 31 is passed through the two opposing adjusting members 22, and a nut 32 is provided at the free end of the bolt 31.

[0064] Furthermore, a circumferential force is applied to the nut 32, causing it to move along the axial direction of the bolt 31. Once the bolt 32 is engaged with the adjusting member 22 on one side, a force will continue to be applied to the bolt 32.

[0065] At this time, the bolt 32 will continue to move along the axial direction of the bolt 31. During this process, the bolt 32 will drive the adjusting member 22, which is in contact with the bolt 32, to move closer to the other adjusting member 22. As a result, the relative distance between the two adjusting members 22 can be reduced, thereby reducing the relative distance between the first clamping member 21 and the other first clamping member 21, and between the second clamping member 23 and the other second clamping member 23.

[0066] In this way, the lateral distance of the cavity 24 can be reduced. This allows the two opposing connecting mechanisms 2 to stably connect adjacent support frames 112 together, thereby ensuring a stable connection between adjacent protective parts 11.

[0067] In this configuration, the three protective sections 11 can be relatively fixed together, thereby fixing the three protective mechanisms 1 together and placing them together on the fixed plate 102. This allows the protective mechanisms 1 and the connecting seat 101 to form a sealed working cavity 20. With this configuration, when an operator needs to work on the fixed plate 102, the operator can work within the working cavity 20, and the protective mechanisms 1 can restrict the operator's lateral outward movement. This ensures the operator's safety.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A safety protection device arranged on a lower frame support arm of a power station unit, the lower frame support arm (10) of the power station unit comprising a connecting seat (101), and a fixed plate (102) arranged on the connecting seat (101) and extending laterally outward to form a workbench surface, characterized in that the safety protection device comprising a protection mechanism (1) arranged on the fixed plate (102) and extending upward, the protection mechanism (1) being configured to allow arrangement along the contour of the fixed plate (102) to jointly form a sealed work cavity (20) with the connecting seat (101).

2. The safety guard arranged on the support arm of the lower frame of the power unit set according to claim 1, characterized in that: the protection mechanism (1) comprising a protection part (11) for jointly forming the sealed work cavity (20) with the connecting seat (101), and at least one clamping part (12) arranged on the protection part (11) and configured to be fixed relative to the fixed plate (102).

3. The safety shield according to claim 2, wherein: the clamping part (12) comprising oppositely arranged first and second clamping members (121, 122), and a connecting member (123) arranged between the first and second clamping members (121, 122) for connecting the first and second clamping members (121, 122) together, the first and second clamping members (121, 122) being configured to jointly form a clamping interval (124) allowing clamping on the lateral side of the fixed plate (102).

4. The safety shield according to claim 3, wherein: the protection mechanism (1) further comprising a fixing part (13) extending through the second clamping member (122) into the clamping interval (124) and configured to allow upward and downward movement along the second clamping member (122) to jointly clamp the fixed plate (102) with the first clamping member (121).

5. The safety shield according to claim 4, wherein: the fixing part (13) comprising a threaded rod (131) passing through the second clamping member (122), and a threaded hole provided on the second clamping member (122) and configured to cooperate with the threaded rod (131) to allow relative fixation of the threaded rod (131) and the second clamping member (122).

6. The safety shield according to claim 5, wherein: a screwing member (132) is further arranged on the free end of the threaded rod (131).

7. The safety shield according to any one of claims 2-6, wherein: the protection part (11) is provided in three pieces with the same curvature as the fixed plate (102), and adjacent protection parts (11) are detachably connected together.

8. The safety shield according to claim 7, wherein: the protection part (11) comprises a protection plate (111), and a support frame (112) arranged circumferentially along the protection plate (111), and a connecting mechanism (2) detachably arranged on the support frame (112) and configured to allow detachable connection of adjacent protection parts (11).

9. The safety shield according to claim 8, wherein: The connecting mechanism (2) comprises a first clamping piece (21), an adjusting piece (22) and a second clamping piece (23) connected in sequence, the first clamping piece (21) and the second clamping piece (23) are arranged to allow the support frame (112) to be accommodated, the connecting mechanism (2) is arranged in two and is distributed in opposite ways, so that two ends respectively constitute cavities (24) for accommodating adjacent support frames, and an adjusting mechanism (3) is further arranged on the adjusting piece (22), the adjusting mechanism (3) is configured to allow the relative distance between the two oppositely arranged connecting mechanisms (2) to be adjusted.

10. The safety shield according to claim 9, wherein: The adjusting mechanism (3) comprises a bolt (31) penetrating through the two oppositely arranged connecting mechanisms (2), and a nut (32) cooperating with the bolt (31) and allowing the adjusting piece (22) to abut, the nut (32) is configured to be capable of moving along the axis of the bolt (31), so as to adjust the relative distance between the bolt (31) and the nut (32).

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