Guard plate and counterweight guard

Abstract

A protective plate comprises a protective plate body, which comprises at least two rectangular panels, the uppermost rectangular panel is a first rectangular panel, and the lowermost rectangular panel is a second rectangular panel; a first connecting surface, a second connecting surface, a third connecting surface and a first extending surface are sequentially extended from the upper side of the first rectangular panel; and a second extending surface and a third extending surface are sequentially extended from the lower side of the second rectangular panel. When the protective plate is used as an assembly of a counterweight frame protective fence, the second extending surface of the upper protective plate is attached to the lower surface of the third connecting surface of the lower protective plate, the third extending surface of the upper protective plate is attached to the front surface of the second connecting surface of the lower protective plate, the first extending surface of the lower protective plate is attached to the back surface of the second rectangular panel of the upper protective plate, the upper protective plate can limit the downward deformation of the lower protective plate, and the lower protective plate can limit the upward deformation of the upper protective plate.

Description

Technical Field

[0001] This utility model relates to the field of elevator shaft equipment, and in particular to a protective plate and a counterweight guardrail. Background Technology

[0002] The counterweight is a crucial component used to balance the weight of the elevator car. It is typically located near the shaft wall and connected to the elevator car via steel cables. To prevent maintenance personnel from accidentally entering the moving parts of the counterweight and suffering shearing injuries while operating inside the elevator shaft, safety railings are installed on the outside of the counterweight to improve safety.

[0003] In existing technologies, counterweight guardrails typically include a protective panel and fixed arms located on both sides of the protective panel to fix it to the counterweight guide rail or elevator shaft wall. The protective panel and the fixed arms on both sides form a semi-enclosed structure, enclosing the counterweight and related equipment inside. Furthermore, for ease of transportation and installation, existing technologies often use several protective panels arranged vertically to form a large protective panel. For example, in Chinese patent CN219136062U, each protective panel is fixed on both sides by the support arms. To compensate for the issue of insufficient strength at the top and bottom ends of the protective panel, which are prone to deformation, a first bending plate and a second bending plate are vertically installed at the top and bottom ends of the protective panel, respectively. The second bending plate of the upper protective panel is screwed to the first bending plate of the lower protective panel to enhance the connection strength at the joint, preventing the joint from separating due to deformation and exposing the internal counterweight equipment, thus losing its protective function.

[0004] However, since the first and second bent plates are perpendicular to the protective plate as a whole, the screws and screwdrivers need to be operated in a vertical direction when aligning and screwing them together. At the same time, because the first and second bent plates are relatively narrow and other parts of the protective plate have raised reinforcing ribs, it is difficult for operators to operate the screws and screwdrivers in a vertical direction in front of the protective plate, making the installation process inconvenient. Utility Model Content

[0005] Therefore, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide a protective plate.

[0006] A protective panel includes: a main body, which is integrally formed from a single sheet; the main body includes at least two rectangular panels, with the long sides of the rectangular panels arranged vertically and the short sides arranged horizontally; the rectangular panels are arranged sequentially from top to bottom, and adjacent rectangular panels are connected by a reinforcing connection structure; a first mounting structure is provided on the reinforcing connection structure; the uppermost rectangular panel is designated as the first rectangular panel, and the lowermost rectangular panel is designated as the second rectangular panel; a first connecting surface perpendicular to the first rectangular panel extends from the upper edge of the first rectangular panel toward the back of the first rectangular panel; a second connecting surface extends from the edge of the first connecting surface away from the first rectangular panel in a direction away from the first rectangular panel. The first rectangular panel has two connecting surfaces: a second connecting surface perpendicular to the first connecting surface; a third connecting surface parallel to the first connecting surface, extending from the edge of the second connecting surface away from the first connecting surface toward the plane of the first rectangular panel; a first extension surface parallel to the second connecting surface, extending from the edge of the third connecting surface away from the second connecting surface toward the plane of the first rectangular panel; a second extension surface perpendicular to the second rectangular panel, extending from the lower side of the second rectangular panel toward the back of the second rectangular panel; and a third extension surface perpendicular to the second extension surface, extending from the edge of the second extension surface away from the second rectangular panel, extending toward the plane of the second rectangular panel.

[0007] Compared to existing technologies, when using this protective plate as a component of the counterweight guardrail and arranging the protective plates vertically, in two adjacent protective plates, the second extension surface of the upper protective plate is attached to the lower surface of the third connecting surface of the lower protective plate, and the third extension surface of the upper protective plate is attached to the front surface of the second connecting surface of the lower protective plate; the first extension surface of the lower protective plate is attached to the back surface of the second rectangular panel of the upper protective plate. Thus, the upper protective plate can restrict the downward deformation of the lower protective plate, and the lower protective plate can restrict the upward deformation of the upper protective plate. Vertically installed screws are not required, and the exposed counterweight equipment is prevented from being exposed, improving the ease of installation.

[0008] In some embodiments, a rivet nut is provided at the center of the second connecting surface.

[0009] In some embodiments, two adjacent rectangular panels are defined as an upper rectangular panel and a lower rectangular panel, respectively. The reinforcing connection structure includes a first reinforcing connection surface, a second reinforcing connection surface, and a third reinforcing connection surface: a first reinforcing connection surface extends perpendicularly to the lower rectangular panel from its upper edge toward its back side; a second reinforcing connection surface extends perpendicularly to the first reinforcing connection surface from its edge away from the lower rectangular panel toward the upper rectangular panel; a third reinforcing connection surface extends parallel to the first reinforcing connection surface from its edge away from the first reinforcing connection surface toward the upper rectangular panel, and is connected to the lower edge of the upper rectangular panel; first mounting structures are provided on both the left and right sides of the second reinforcing connection surface. This reinforcing connection structure is equivalent to a reinforcing rib forming the protective plate, ensuring the strength of the protective plate when using thinner materials.

[0010] In addition, this utility model also provides a counterweight guardrail, which includes at least two of the aforementioned guard plates, arranged vertically between the two guard plates, such that in the two adjacent guard plates, the second extension surface of the upper guard plate is attached to the lower surface of the third connecting surface of the lower guard plate, and the third extension surface of the upper guard plate is attached to the front surface of the second connecting surface of the lower guard plate; the first extension surface of the lower guard plate is attached to the back surface of the second rectangular panel of the upper guard plate; a side column, wherein the guard plate is fixed to the side column by a first mounting structure; and a fixing arm, wherein the side column is fixed in the elevator shaft by the fixing arm.

[0011] In some embodiments, a reinforcing assembly is further included, comprising a pressure plate and screws; the reinforcing assembly is disposed at the junction of two adjacent protective plates; the pressure plate is vertically arranged, with its upper end abutting against the front surface of the second rectangular panel of the upper protective plate and its lower end abutting against the front surface of the first rectangular panel of the lower protective plate; the screws pass horizontally through the middle of the pressure plate and engage with the rivet nuts on the protective plates, and are horizontally tightened to horizontally clamp the two adjacent protective plates. The reinforcing assembly enhances the connection strength of two adjacent protective plates at the junction.

[0012] In some embodiments, the side column is perpendicular to the ground, and the side column is provided with a second mounting structure for fixing to the protective plate and a third mounting structure for fixing to the fixed arm.

[0013] In some embodiments, the side column includes a first panel and a second panel fixed to each other; the first panel is provided with the second mounting structure; and the second panel is provided with a third mounting structure.

[0014] In some embodiments, the side column further includes a third panel, which is fixed to the second panel at two perpendicular edges of the first panel; the second panel extends from the first panel toward the front of the protective plate, and the third panel extends from the first panel toward the back of the protective plate; the third panel is provided with a fourth mounting structure for mounting and fixing to the fixed arm. Providing more structures for connecting to the fixed arm can strengthen the connection between the side column and the fixed arm.

[0015] In some embodiments, the first end of the fixed arm is provided with a fifth mounting structure and a sixth mounting structure, respectively corresponding to the third and fourth mounting structures, and the middle part of the fixed arm is provided with a seventh mounting structure for fixing to the elevator shaft; a positioning protrusion is also provided between the fifth and sixth mounting structures of the fixed arm, and the distance from the positioning protrusion to the fifth mounting structure is equal to the distance from the first panel of the side column to the third mounting structure. The positioning protrusion helps the fixed arm to be positioned with the mounting structures of the side column more quickly, improving installation efficiency.

[0016] In some embodiments, the system further includes side guards located on both sides of the protective plate; an eighth mounting structure for fixed installation with the side guards is provided between the seventh mounting structure and the second end of the fixed arm. The side guards are used to further protect the counterweight equipment and improve safety.

[0017] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the counterweight guardrail;

[0019] Figure 2 This is a schematic diagram of the protective plate structure;

[0020] Figure 3 This is a structural diagram of the first rectangular panel and its top and bottom sides;

[0021] Figure 4 This is a structural diagram of the second rectangular panel and its lower side.

[0022] Figure 5 This is a cross-sectional structural diagram of the joint area between two adjacent protective plates; in order to distinguish between the two different protective plates, the lower protective plate is represented by a diagonal line.

[0023] Figure 6 Partial cross-sectional diagram of the reinforcement components and protective panels.

[0024] Figure 7 This is a partially enlarged schematic diagram showing the fixing relationship between the protective plate, side columns, and fixing arms;

[0025] Figure 8 for Figure 7 Side view of the structure shown;

[0026] Figure 9 This is a schematic diagram of the fixed arm.

[0027] Reference numerals: 10 Protective plate, 11 Protective plate body, 111 Rectangular panel, 111a First rectangular panel, 111b Second rectangular panel, 112 Reinforcing connection structure, 112a First reinforcing connection surface, 112b Second reinforcing connection surface, 112c Third reinforcing connection surface, 113 Rivet nut, 12a First connection surface, 12b Second connection surface, 12c Third connection surface, 12d First extension surface, 13a Second extension surface, 13b Third extension surface, 10c Observation hole, 101 First mounting structure, 20 Side column, 21 First panel, 22 Second panel, 23 Third panel, 30 Fixing arm, 31 Fifth mounting structure, 32 Sixth mounting structure, 33 Positioning protrusion, 34 Seventh mounting structure, 35 Eighth mounting structure, 30a First end, 30b Second end, 40 Support leg, 41 Ground positioning panel, 42 Protective plate positioning panel, 50 Side guard plate, 60 Reinforcing component, 61 Pressure plate, 63 Screw. Detailed Implementation

[0028] Analysis revealed that the reason existing technologies require the use of vertically installed screws for fixing is to prevent the upper edge of the lower protective plate from bending downwards and the lower edge of the upper protective plate from warping upwards, which could lead to the upper and lower protective plates separating at the joint and exposing the counterweight equipment that should be enclosed. Therefore, this invention proposes that if the upper and lower protective plates form a mutually restrictive relationship at their joint that makes separation difficult, then vertical screws can be omitted, making installation more convenient.

[0029] The present invention will now be described in detail with reference to the accompanying drawings.

[0030] like Figure 1 As shown, the counterweight guardrail of this utility model includes at least two guard plates 10 that are vertically arranged and assembled in vertical columns, side columns 20 that are installed and fixed on both sides of the vertically assembled guard plates 10, fixing arms 30 for fixing the side columns 20 to the counterweight guide rail fixed in the elevator shaft, and support legs 40 that vertically fix the lowermost guard plate 10 to the ground.

[0031] The vertically assembled protective plate 10 and the fixed arms 30 on both sides form a semi - enclosed structure, enclosing the counterweight frame device within this semi - enclosed structure. In the present utility model, the side of each component facing the counterweight frame device is referred to as the inner side, and the side away from the counterweight frame device is referred to as the outer side. At the same time, the surface of the protective plate 10 facing the inner side is called the back surface, and the surface facing the outer side is called the front surface.

[0032] Please also refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 , the protective plate 10 includes a protective plate main body 11, a first connection surface 12a, a second connection surface 12b, a third connection surface 12c, and a first extension surface 12d located on the upper side of the protective plate main body 11, as well as a second extension surface 13a and a third extension surface 13b located on the lower side of the protective plate main body 11.

[0033] Specifically, the protective plate main body 11 is integrally formed by rolling and bending a metal plate body. The protective plate main body 11 includes at least two rectangular panels 111 arranged in sequence from top to bottom, and the long sides of the rectangular panels 111 are arranged vertically and the short sides are arranged horizontally. Adjacent two rectangular panels 111 are connected by a strengthening connection structure 112. The strengthening connection structure 112 includes a first strengthening connection surface 112a, a second strengthening connection surface 112b, and a third strengthening connection surface 112c, which are fixedly connected in sequence to jointly form a "convex" - shaped reinforcing rib framework, protruding towards the back surface direction of the protective plate 10 between the two rectangular panels 111. More specifically:

[0034] Define the two vertically adjacent rectangular panels 111 as the upper - side rectangular panel and the lower - side rectangular panel respectively. The first strengthening connection surface 112a extends from the upper - side edge of the lower - side rectangular panel towards the back surface direction of the lower - side rectangular panel and is perpendicular to the lower - side rectangular panel. The second strengthening connection surface 112b extends from the edge of the first strengthening connection surface 112a away from the lower - side rectangular panel towards the upper - side rectangular panel and is perpendicular to the first strengthening connection surface 112a. The third strengthening connection surface 112c extends from the edge of the second strengthening connection surface 112b away from the first strengthening connection surface 112a towards the direction close to the plane of the upper - side rectangular panel and is connected to the lower - side edge of the upper - side rectangular panel. Finally, the third strengthening connection surface 112c is parallel to the first strengthening connection surface 112a, and the first strengthening connection surface 112a, the second strengthening connection surface 112b, and the third strengthening connection surface 112c form a "convex" - shaped reinforcing rib structure between the upper and lower rectangular panels 111.

[0035] Please also refer to Figure 5The first connecting surface 12a, the second connecting surface 12b, the third connecting surface 12c, and the first extending surface 12d on the upper side of each protective plate body 11, as well as the second extending surface 13a and the third extending surface 13b located on the lower side of the protective plate body 11, will be used for mutual upper and lower limit of two different protective plates 10 when they are vertically assembled.

[0036] The uppermost rectangular panel 111 in each protective panel body 11 is designated as the first rectangular panel 111a, and the lowermost rectangular panel 111 is designated as the second rectangular panel 111b.

[0037] At the upper side of the protective plate body 11, the first connecting surface 12a extends from the upper side of the first rectangular panel 111a toward the back of the first rectangular panel 111a and is perpendicular to the first rectangular panel 111a. The second connecting surface 12b extends from the edge of the first connecting surface 12a away from the first rectangular panel 111a in a direction away from the first rectangular panel 111a and is perpendicular to the first connecting surface 12a. The third connecting surface 12c extends from the edge of the second connecting surface 12b away from the first connecting surface 12a toward the plane where the first rectangular panel 111a is located and is parallel to the first connecting surface 12a. That is, the first connecting surface 12a, the second connecting surface 12b, and the third connecting surface 12c connected in sequence correspond to a "convex" structure located at the uppermost side of a protective plate 10. Furthermore, the first extending surface 12d extends from the edge of the third connecting surface 12c away from the second connecting surface 12b in a direction away from the first rectangular panel 111a, and the first extending surface 12d is parallel to the second connecting surface 12b.

[0038] At the lower side of the protective panel body 11, the second extending surface 13a extends from the lower side of the second rectangular panel 111b toward the back of the second rectangular panel 111b and is perpendicular to the second rectangular panel 111b. The third extending surface 13b extends from the edge of the second extending surface 13a away from the second rectangular panel 111b in a direction away from the second rectangular panel 111b and is perpendicular to the second extending surface 13a.

[0039] When two adjacent protective plates 10 are assembled vertically, the second extension surface 13a of the upper protective plate 10 is attached to the lower surface of the third connecting surface 12c of the lower protective plate 10, and the third extension surface 13b of the upper protective plate 10 is attached to the front of a portion of the second connecting surface 12b of the lower protective plate 10; the first extension surface 12d of the lower protective plate 10 is attached to the back of the second rectangular panel 111b of the upper protective plate 10.

[0040] In this way, in the two adjacent protective plates 10, the lower edge of the upper protective plate 10 abuts against the lower protective plate 10 from bottom to top, restricting the downward deformation of the upper edge of the lower protective plate 10. The upper protective plate 10 also abuts against the lower protective plate 10 from top to bottom, restricting the upward deformation of the lower edge of the upper protective plate 10. This fit prevents the adjacent protective plates 10 from separating and creating gaps, exposing the inner counterweight equipment and causing safety hazards.

[0041] Furthermore, such as Figure 6 As shown, to strengthen the connection strength of the upper and lower protective plates 10 at the abutment point, a rivet nut 113 is provided in the middle of the second connecting surface 12b of the protective plate 10, at a location that does not conform to the third extension surface 13b of the upper protective plate 10. Simultaneously, a reinforcing component 60, cooperating with the rivet nut 113, is provided at the junction of two adjacent upper and lower protective plates 10. The reinforcing component 60 includes a pressure plate 61 and a screw 63. The pressure plate 61 is vertically arranged, with its upper end abutting against the front of the second rectangular panel 111b of the upper protective plate 10, and its lower end abutting against the front of the first rectangular panel 111a of the lower protective plate 10. The screw 63 passes horizontally through the middle of the pressure plate 61 and cooperates with the rivet nut 113 on the protective plate 10, pulling it horizontally to horizontally clamp the two adjacent upper and lower protective plates 10, thus strengthening the connection. Additionally, in some embodiments, an observation hole 10c may be provided on the middle protective plate 10 for technicians to observe the condition of the internal counterweight equipment.

[0042] like Figure 7 , Figure 8 , Figure 9 Besides the mutual restraint of the upper and lower edges of the protective panels 10, each protective panel 10 is mainly fixedly connected to side posts 20 located on its left and right sides and perpendicular to the ground to achieve a relative fixed and vertically assembled relationship between the protective panels 10. The side posts 20 include a first panel 21 for fixed connection to the protective panel 10, and a second panel 22 and a third panel 23 for fixed connection to the fixing arm 30. The second panel 22 is fixed to one of the edges of the first panel 21 perpendicular to the ground and extends from the first panel 21 toward the front of the protective panel 10; the third panel 23 is fixed to the other edge of the first panel 21 perpendicular to the ground and extends from the first panel 21 toward the back of the protective panel 10. Both the second panel 22 and the third panel 23 are perpendicular to the first panel 21.

[0043] The protective plate 10 has a first mounting structure 101—a column positioning hole—for fixing to the side column 20 on both the left and right sides of each second reinforcing connecting surface 112b. The first panel 21 of the side column 20 also has several second mounting structures—protective plate positioning holes—evenly spaced for fixing to the protective plate 10. The first panel 21 is in close contact with the back of the second reinforcing connecting surface 112b of the protective plate 10. The protective plate positioning holes on the first panel 21 of the side column 20 correspond one-to-one with the column positioning holes on the protective plate 10, and the installation and fixing between the protective plate 10 and the side column 20 are achieved here by screwing or riveting. After fixing, the second panel 22 of the side column 20 is perpendicular to the rectangular panel 111 of the protective plate 10 and covers the space between the rectangular panel 111 of the protective plate 10 and the second reinforcing connecting surface 112b from the side. That is, the second panels 22 of the side columns 20 on both sides also form the two side walls of the vertically assembled protective plate 10. Meanwhile, the third panel 23 is located on the back of the protective plate 10 and perpendicular to the rectangular panel 111 of the protective plate 10. Additionally, in a preferred embodiment, the left and right sides of the second connecting surface 12b of the protective plate 10 are also provided with column positioning holes for mounting the side columns 20. Corresponding positioning holes are also provided on the side columns, allowing for screwing or riveting at these locations to further strengthen the fixed installation relationship between the side columns 20 and the protective plate 10.

[0044] The second panel 22 of the side column 20 is provided with a third mounting structure—a first fixing arm positioning hole—for fixing and installing the fixing arm 30. The third panel 23 is provided with a fourth mounting structure—a second fixing arm positioning hole—for fixing and installing the fixing arm 30. The fixing arm 30 is horizontally fixed on the counterweight guide rail, and its first end 30a is provided with a fifth mounting structure 31—a first side column positioning hole—corresponding to the third and fourth mounting structures, and a sixth mounting structure 32—a second side column positioning hole. The first fixing arm positioning hole (third mounting structure) and the second fixing arm positioning hole (fourth mounting structure) of the side column 20 are aligned with the first side column positioning hole (fifth mounting structure 31) and the second side column positioning hole (sixth mounting structure 32) of the fixing arm 30, respectively, and are fixedly installed between the side column 20 and the fixing arm 30 by screwing or riveting at these locations.

[0045] The fixed arm 30 is provided with a seventh mounting structure 34—a guide rail positioning hole—for fixing to the elevator shaft. The fixed arm 30 is screwed or riveted to the counterweight guide rail of the counterweight frame fixed in the elevator shaft through the guide rail positioning hole, and is fixed on the outside of the counterweight guide rail.

[0046] A positioning protrusion 33 is also provided between the fifth mounting structure 31 and the sixth mounting structure 32 of the fixed arm 30. The distance from the positioning protrusion 33 to the fifth mounting structure 31 is equal to the distance from the first panel 21 of the side column 20 to the third mounting structure. In this way, the fixed arm 30 and the side column 20 can be quickly aligned horizontally during installation. Then, vertical adjustments can be made to quickly align the third mounting structure with the fifth mounting structure 31 and the fourth mounting structure with the sixth mounting structure 32 for rapid and fixed installation. In this embodiment, three fixed arms 30 are evenly spaced vertically on the side columns 20 on both sides. Each fixed arm 30 is horizontal and perpendicular to the protective plate 10. The vertically assembled protective plate 10 and the fixed arms 30 on both sides form a semi-enclosed structure, surrounding the counterweight equipment.

[0047] The support leg 40 includes a ground positioning panel 41 and a protective plate positioning panel 42 that are perpendicularly fixed in an "L" shape. The ground positioning panel 41 has ground positioning holes for tightly fitting and screwing or riveting the ground to the ground. The lowermost protective plate 10 has support leg positioning holes. The protective plate positioning panel 42 has protective plate positioning holes corresponding to the support leg positioning holes of the protective plate 10. The two are aligned and fixed to the lowermost protective plate 10 by screwing or riveting, so that the protective plate 10 is perpendicularly fixed to the ground.

[0048] Furthermore, considering that the counterweight frame also moves up and down within the space between the counterweight guide rail and the shaft wall, in order to further prevent people from accidentally entering the movement space of the counterweight frame, the counterweight guardrail of this utility model is also provided with a side guard plate 50 on both sides to enclose the movement space of the counterweight frame between the counterweight guide rail and the shaft wall. Specifically, between the seventh mounting structure 34 and the second end 30b of the fixed arm 30, there is an eighth mounting structure 35—a side guard plate positioning hole—for fixed installation with the side guard plate 50. The side guard plate 50 is provided with a ninth mounting structure—a fixed arm positioning hole. The eighth mounting structure 35 of each fixed arm 30 on each side corresponds one-to-one with the ninth mounting structure of the side guard plate 50 on that side, and they are screwed, riveted, or welded here so that the two side guard plates 50 are parallel to each other and perpendicular to the ground.

[0049] Thus, the assembled protective plate 10 protects the front of the counterweight frame, while the side guard plates 50 isolate and protect the lifting and lowering space of the counterweight frame. The fixed arms 30 on both sides are positioned between the side guard plates 50 and the protective plate 10 and are fixed to the counterweight guide rails. The counterweight guide rails themselves also block the area between the side of the protective plate 10 and the side guard plates 50, preventing workers from entering. Therefore, this counterweight frame guardrail structure effectively surrounds the counterweight frame, enhancing its safety protection.

[0050] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” means two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art will understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A shield plate characterized by, include: The protective panel body is integrally formed from a single sheet. The protective panel body includes at least two rectangular panels, with the long sides of the rectangular panels arranged vertically and the short sides arranged horizontally. The rectangular panels are arranged sequentially from top to bottom, and adjacent rectangular panels are connected by a reinforcing connection structure. A first mounting structure is provided on the reinforcing connection structure. The rectangular panel at the top is designated as the first rectangular panel, and the rectangular panel at the bottom is designated as the second rectangular panel. A first connecting surface extends perpendicularly to the first rectangular panel from its upper side towards its back side; a second connecting surface extends perpendicularly to the first connecting surface from the edge of the first connecting surface away from the first rectangular panel; a third connecting surface extends parallel to the first connecting surface from the edge of the second connecting surface away from the first connecting surface towards the plane of the first rectangular panel; and a first extension surface extends parallel to the second connecting surface from the edge of the third connecting surface away from the second connecting surface towards the plane of the first rectangular panel. A second extension surface extends from the lower side of the second rectangular panel toward the back of the second rectangular panel and is perpendicular to the second rectangular panel. A third extension surface extends from the edge of the second extension surface away from the second rectangular panel away from the second rectangular panel and is perpendicular to the second extension surface.

2. The guard plate of claim 1, wherein: A rivet nut is provided in the middle of the second connecting surface.

3. The guard plate of claim 1, wherein: Two adjacent rectangular panels are defined as the top rectangular panel and the bottom rectangular panel, respectively. The reinforced connection structure includes a first reinforced connection surface, a second reinforced connection surface, and a third reinforced connection surface: A first reinforcing connecting surface extends from the upper edge of the lower rectangular panel toward the back of the lower rectangular panel and is perpendicular to the lower rectangular panel; A second reinforcing connecting surface extends from the edge of the first reinforcing connecting surface away from the lower rectangular panel towards the upper rectangular panel, and the second reinforcing connecting surface is perpendicular to the first reinforcing connecting surface. A third reinforcing connecting surface extends from the edge of the second reinforcing connecting surface away from the first reinforcing connecting surface toward the upper rectangular panel. The third reinforcing connecting surface is parallel to the first reinforcing connecting surface and is connected to the lower side edge of the upper rectangular panel. A first mounting structure is provided on both the left and right sides of the second reinforced connection surface.

4. A counterweight guardrail characterized by include: At least two protective plates as described in any one of claims 1 to 3, the two protective plates being arranged vertically between each other, such that in the two adjacent protective plates, the second extension surface of the upper protective plate is attached to the lower surface of the third connecting surface of the lower protective plate, the third extension surface of the upper protective plate is attached to the front surface of the second connecting surface of the lower protective plate, and the first extension surface of the lower protective plate is attached to the back surface of the second rectangular panel of the upper protective plate. Side columns, the protective plate is installed and fixed to the side columns through the first mounting structure; The side column is fixed in the elevator shaft by the fixed arm.

5. The counterweight guardrail according to claim 4, characterized in that: It also includes a reinforcement component, which includes a pressure plate and screws; the reinforcement component is disposed at the junction of two adjacent protective plates; The pressure plate is set vertically, with its upper end abutting against the front of the second rectangular panel of the upper protective plate and its lower end abutting against the front of the first rectangular panel of the lower protective plate. The screw passes horizontally through the middle of the pressure plate and engages with the rivet nut on the protective plate, pulling it horizontally to clamp the two adjacent protective plates horizontally.

6. The safeguard bar of the counterweight according to claim 5, characterized in that: The side column is perpendicular to the ground, and the side column is provided with a second mounting structure for fixing to the protective plate and a third mounting structure for fixing to the fixed arm.

7. The safeguard bar of the counterweight according to claim 6, characterized in that: The side support includes a first panel and a second panel that are fixed to each other; the first panel is provided with the second mounting structure; and the second panel is provided with the third mounting structure.

8. The safeguard bar of the counterweight according to claim 7, characterized in that: The side column also includes a third panel, which is fixed to the two edges of the first panel that are perpendicular to the ground, respectively; the second panel extends from the first panel toward the front of the protective plate, and the third panel extends from the first panel toward the back of the protective plate. The third panel is provided with a fourth mounting structure for mounting and fixing to the fixed arm.

9. The counterweight guardrail according to claim 8, characterized in that: The first end of the fixed arm is provided with a fifth mounting structure and a sixth mounting structure, which are respectively corresponding to the third mounting structure and the fourth mounting structure. The middle part of the fixed arm is provided with a seventh mounting structure for fixing to the elevator shaft. A positioning protrusion is also provided between the fifth and sixth mounting structures of the fixed arm, and the distance from the positioning protrusion to the fifth mounting structure is equal to the distance from the first panel of the side column to the third mounting structure.

10. The counterweight guardrail according to claim 9, characterized in that: It also includes two side panels, which are located on both sides of the protective panel; An eighth mounting structure for fixing the side guard plate is provided between the seventh mounting structure of the fixed arm and the second end.

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