Elevator guide rail fixing device

Abstract

The utility model relates to the technical field of elevators, and discloses an elevator guide rail fixing device which comprises a guide rail support and bolt sets symmetrically installed on the guide rail support. The guide rail clamp is fixedly mounted on one side of the guide rail bracket through two bolt groups; the guide rail body is mounted on one side of the guide rail bracket through two groups of guide rail clamps; an eccentric structure is arranged on the bolt group; through cooperation of the guide rail clamp, the bolt set, the nut, the gasket and the guide rail body and the eccentric structure design of the bolt set, larger pre-tightening force can be generated in the fastening process, the fixing effect of the bolt set is enhanced, looseness is prevented, and the portion, making contact with the guide rail body, of the bent portion of the guide rail clamp is designed to be an arc or an inclined face. The stress concentration phenomenon is reduced, the service life of the guide rail and the fixing device is prolonged, and the installation stability and the installation efficiency of the guide rail body are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to an elevator guide rail fixing device. Background Technology

[0002] As a crucial component of elevators, the guide rail primarily guides the movement of the car and counterweight during elevator operation. The installation stability of the guide rail plays a vital role in the elevator's ride comfort. Guide rails are typically fixed to guide rail brackets using guide rail clamps and bolts. While the bolt holes in both the guide rail clamps and brackets are usually round, some guide rail brackets use oblong holes. However, the round hole structure means that during installation, the guide rail clamps on both sides of the guide rail cannot simultaneously engage with it in the horizontal direction, resulting in a gap between the guide rail and the clamps. The oblong structure, due to the irregular load distribution within the elevator, leads to a persistent unbalanced load on the elevator car, meaning the two sides of the guide rail are constantly under stress imbalance.

[0003] In existing technologies, the mounting bolts are usually conventional hexagonal head bolts, and the nuts are also conventional hexagonal nuts. When installing the guide rail, multiple people need to work together. On the one hand, the guide rail and the guide rail bracket need to be aligned so that the distance between the guide rail clamps on both sides of the guide rail and the guide rail is as equal as possible. However, it is difficult to achieve perfect alignment in actual installation. If the distance on both sides is too large, a gap will occur between the guide rail clamp on one side and the guide rail. On the other hand, a wrench is needed to hold the bolt head before the nut can be tightened. Otherwise, the bolt will rotate with the nut and cannot be tightened. This is time-consuming, labor-intensive, and inefficient. Therefore, we need to propose an elevator guide rail fixing device. Utility Model Content

[0004] The purpose of this utility model is to provide an elevator guide rail fixing device that ensures that the guide rail clamps on both sides of the guide rail can simultaneously abut the guide rail without deliberately aligning the guide rail with the guide rail bracket during the installation process. Moreover, it will not slip due to uneven load during use, and can effectively guarantee the comfort of elevator operation in the long term. At the same time, the bolt cap does not need to be clamped with a wrench, and the bolt will not rotate with the nut, which improves the installation stability and installation efficiency, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an elevator guide rail fixing device, comprising:

[0006] Guide rail bracket, and bolt assemblies symmetrically mounted on the guide rail bracket;

[0007] A guide rail clamp, wherein the guide rail clamp is fixedly installed on one side of the guide rail bracket by two sets of bolts;

[0008] The guide rail body is mounted on one side of the guide rail bracket by two sets of guide rail clamps;

[0009] The bolt assembly has an eccentric structure, and the lower end of the bolt assembly passes through the guide rail bracket and is threaded with a nut. A washer is provided between the nut and the guide rail bracket.

[0010] Preferably, the guide rail clamp includes an integrally formed base plate body, a first bent portion and a second bent portion. The first bent portion is vertically disposed at one end of the base plate body. The side of the first bent portion opposite to the guide rail body is the outer side of the bent portion, and the side of the first bent portion abutting against the guide rail body is the inner side of the bent portion.

[0011] Preferably, one end of the second bend is provided with an arc, the included angle between the first bend and the second bend is less than 90°, and a long waist hole is provided on one side of the base plate body, the length direction of the long waist hole being perpendicular to the first bend.

[0012] Preferably, the guide rail body has a T-shaped cross-section, one end of the guide rail body is provided with a bottom plate side that abuts against the inner side of the bent portion, and the side of the guide rail body opposite to the guide rail bracket is provided with an inclined surface that abuts against the arc.

[0013] Preferably, the bolt assembly includes an integrally formed nut body and a screw body. The nut body is disposed at one end of the screw body. The nut body has a nut center and a screw center, which do not coincide. The nut body and the screw body are arranged in an eccentric structure. A first annular groove is formed on the outer side of the connection end between the nut body and the screw body. A nut sidewall is formed on the outer side of the nut body.

[0014] Preferably, the bolt assembly mainly consists of a second bolt and an eccentric wheel. One side of the eccentric wheel has an internal hexagonal groove and a round hole. One end of the second bolt passes through the round hole, the oblong hole and the guide rail bracket in sequence and is threadedly connected to the nut. The nut end of the second bolt is embedded in the internal hexagonal groove.

[0015] Preferably, the cross-section of the internal hexagonal groove is larger than the cross-section of the nut of the second bolt, the inner diameter of the circular hole is larger than the outer diameter of the screw of the second bolt, the axis of the eccentric wheel is eccentrically arranged with respect to the axis of the second bolt, and a second annular groove is provided on the other side of the eccentric wheel.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model mainly utilizes the cooperation between the guide rail clamp, bolt group, nut, washer and guide rail body. The eccentric structure design of the bolt group enables a greater preload during the tightening process, which enhances the fixing effect of the bolt group and prevents loosening. The part of the guide rail clamp that contacts the guide rail body is designed as an arc or bevel, which reduces stress concentration, extends the service life of the guide rail and fixing device, and ensures the stability and installation efficiency of the guide rail body. Attached Figure Description

[0018] Figure 1 This is a top view of the structure of this utility model;

[0019] Figure 2 This is a front structural diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the guide rail clamp of this utility model.

[0021] Figure 4 This is a front structural diagram of the guide rail clamp of this utility model;

[0022] Figure 5 This is a schematic diagram of the bolt assembly of this utility model.

[0023] Figure 6 This is a schematic diagram of the nut of the bolt assembly of this utility model.

[0024] Figure 7 This is a schematic diagram of the eccentric wheel of this utility model.

[0025] Figure 8 This is a top view of the eccentric wheel of this utility model.

[0026] Figure 9 This is a three-dimensional structural diagram of the eccentric wheel of this utility model.

[0027] Figure 10 This is a schematic diagram of the assembly structure of the second bolt and the eccentric wheel of this utility model.

[0028] Figure 11 This is a schematic diagram of the cross-sectional structure of the guide rail of this utility model.

[0029] In the diagram: 1. Guide rail clamp; 11. Base plate body; 111. Long slotted hole; 12. First bend; 121. Outer side of bend; 122. Inner side of bend; 13. Second bend; 131. Arc; 2. Bolt assembly; 21. Nut body; 211. Nut center; 212. Screw center; 213. Nut sidewall; 22. Screw body; 23. First annular groove; 3. Nut; 4. Washer; 5. Guide rail bracket; 6. Guide rail body; 61. Inclined surface; 62. Base plate side; 7. Second bolt; 8. Eccentric wheel; 81. Internal hexagonal groove; 82. Round hole; 83. Second annular groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example 1

[0032] Please see Figure 1-6 and Figure 11 This utility model provides a technical solution: an elevator guide rail fixing device, comprising:

[0033] Guide rail bracket 5, and bolt group 2 symmetrically installed on guide rail bracket 5;

[0034] Guide rail clamp 1, guide rail clamp 1 is fixedly installed on one side of guide rail bracket 5 by two sets of bolts;

[0035] The guide rail body 6 is mounted on one side of the guide rail bracket 5 via two sets of guide rail clamps 1.

[0036] The bolt assembly 2 is provided with an eccentric structure. The lower end of the bolt assembly 2 passes through the guide rail bracket 5 and is threadedly connected to a nut 3. A washer 4 is provided between the nut 3 and the guide rail bracket 5. The bolt assembly passes through the guide rail clamp 1, the guide rail bracket 5 and the washer 4 in sequence and is connected to the nut 3, thereby completing the installation of the guide rail body 6.

[0037] The guide rail clamp 1 includes an integrally formed base plate body 11, a first bent portion 12, and a second bent portion 13. The first bent portion 12 is vertically disposed at one end of the base plate body 11. The side of the first bent portion 12 opposite to the guide rail body 6 is designated as the outer side 121 of the bent portion, and the side of the first bent portion 12 abutting against the guide rail body 6 is designated as the inner side 122 of the bent portion. The inner side 122 of the bent portion of the guide rail clamp 1 abuts against the side of the base plate of the guide rail body 6, thereby facilitating the positioning of the guide rail body 6. Furthermore, the first bent portion 12 and the second bent portion 13 can better fit the second bent portion 13 against the inclined surface 61 of the guide rail body 6, improving the limiting effect.

[0038] The second bending part 13 has an arc 131 on one side end. The angle between the first bending part 12 and the second bending part 13 is less than 90°. The bottom plate body 11 has an elongated hole 111 on one side. The length direction of the elongated hole 111 is perpendicular to the first bending part 12. The arc 131 can make the second bending part 13 abut against the inclined surface 61 of the guide rail body 6, thereby improving the clamping stability of the guide rail body 6 and preventing the guide rail body 6 from shaking.

[0039] The guide rail body 6 has a T-shaped cross section. One end of the guide rail body 6 has a bottom plate side 62 that abuts against the inner side 122 of the bend. The side of the guide rail body 6 opposite to the guide rail bracket 5 has a slope 61 that abuts against the arc 131. The T-shaped design of the guide rail body 6 improves the overall strength and ensures the service life of the elevator guide.

[0040] Bolt assembly 2 includes an integrally formed nut body 21 and screw body 22. The nut body 21 is located at one end of the screw body 22. The nut body 21 has a nut center 211 and a screw center 212. The nut center 211 and the screw center 212 do not coincide. The nut body 21 and the screw body 22 are arranged in an eccentric structure. A first annular groove 23 is opened on the outer side of the connection end of the nut body 21 and the screw body 22. A nut sidewall 213 is provided on the outer side of the nut body 21. Through the positional design of the nut body 21 and the screw body 22 of bolt assembly 2, the nut body 21 and the screw body 22 form an eccentric bolt with an eccentric structure, which facilitates the installation of the guide rail clamp 1. The guide rail body 6 can be installed without aligning it with the guide rail bracket 5.

[0041] The bolt holes on the guide rail bracket 5 are round holes, the bolt holes on the guide rail clamp 1 are oblong holes 111, the bolt group 2 is an eccentric bolt, and the nut sidewall 213 of the bolt group 2 protrudes from the outer side 121 of the bent part of the guide rail clamp 1. Figure 2Rotate bolt assembly 2 in the direction indicated by the arrow. The nut sidewall 213 will push against the guide rail clamp 1 and move towards the guide rail body 6 to eliminate the gap between the inner side 122 of the bent part of the guide rail clamp 1 and the bottom plate side 62 of the guide rail body 6 until the inner side 122 of the bent part of the guide rail clamp 1 directly contacts the bottom plate side 62 of the guide rail body 6. At this time, the guide rail clamp 1 pushes against the guide rail body 6 in the horizontal direction.

[0042] In summary, during the process of tightening nut 3, as follows: Figure 2 The arrow indicates the direction of nut 3's rotation and tightening. Bolt group 2 will also rotate in the same direction as the tightening force of nut 3. Because bolt group 2 is an eccentric bolt, when nut body 21 presses against guide rail clamp 1 and guide rail clamp 1 presses against guide rail body 6, bolt group 2 stops rotating. As nut 3 is continuously tightened, bolt group 2 still has a tendency to rotate. This tendency is converted into a tightening force on guide rail clamp 1, and also into a tightening force on guide rail body 6 by guide rail clamp 1. At the same time, guide rail clamp 1 will also hinder the rotation of bolt group 2. Therefore, bolt group 2 will not rotate without a wrench. Thread locking can be completed by directly tightening nut 3, which improves installation efficiency.

[0043] Although the bolt holes of the guide rail clamp 1 are oblong holes 111, the bolt holes of the guide rail bracket 5 are round holes, and the nut body 21 of the eccentric bolt presses against the guide rail clamp 1. After tightening the nut 3, the nut body 21 remains in contact with the guide rail clamp 1. Figure 2 As shown by the arrow, the guide rail body 6 exhibits a rotational trend, so even if there is a large lateral force on the guide rail body 6, the guide rail clamp 1 and bolt group 2 will not move during long-term use, greatly improving installation stability.

[0044] By using the long slot 111 of the guide rail clamp 1 in conjunction with the eccentric bolt, it is not necessary to specifically align the guide rail body 6 and the guide rail bracket 5. This allows the guide rail clamps 1 on both sides to firmly and stably hold the guide rail body 6, thus improving installation efficiency.

[0045] Example 2

[0046] The other parts, implementation principles, and achievable effects are the same, and will not be repeated here. The difference from Embodiment 1 is that, Figure 7-10 As shown, bolt group 2 consists of second bolt 7 and eccentric wheel 8. Since second bolt 7 cannot rotate independently within eccentric wheel 8, eccentric wheel 8 and second bolt 7 are combined to form eccentric bolt structure. The eccentric bolt in this scheme is similar to the eccentric bolt structure in embodiment 1 and can achieve the same effect.

[0047] The bolt assembly mainly consists of a second bolt 7 and an eccentric wheel 8. One side of the eccentric wheel 8 has an internal hexagonal groove 81 and a round hole 82. One end of the second bolt 7 passes through the round hole 82, the elongated hole 111 and the guide rail bracket 5 in sequence and is threadedly connected to the nut 3. The nut end of the second bolt 7 is embedded in the internal hexagonal groove 81. The center of the internal hexagonal groove 81 and the center of the round hole 82 are set on the same straight line, but the center of the eccentric wheel 8 and the center of the round hole 82 are not set on the same straight line, so that the eccentric wheel 8 and the second bolt 7 form an eccentric bolt structure as in Embodiment 1.

[0048] The cross-section of the internal hexagonal recess 81 is larger than the cross-section of the nut of the second bolt 7, the inner diameter of the circular hole 82 is larger than the outer diameter of the screw of the second bolt 7, the axis of the eccentric wheel 8 is eccentrically set with the axis of the second bolt 7, and a second annular recess 83 is provided on the other side of the eccentric wheel 8. The internal hexagonal recess 81 is used to limit the hexagonal nut of the second bolt 7, so that the second bolt 7 cannot rotate alone in the internal hexagonal recess.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An elevator guide rail fixing device, characterized in that, include: Guide rail bracket (5), and bolt group (2) symmetrically installed on guide rail bracket (5); The guide rail clamp (1) is fixedly installed on one side of the guide rail bracket (5) by two sets of bolts; The guide rail body (6) is mounted on one side of the guide rail bracket (5) by two sets of guide rail clamps (1); The bolt group (2) is provided with an eccentric structure. The lower end of the bolt group (2) passes through the guide rail bracket (5) and is threaded with a nut (3). A washer (4) is provided between the nut (3) and the guide rail bracket (5).

2. The elevator guide rail fixing device according to claim 1, characterized in that: The guide rail clamp (1) includes an integrally formed base plate body (11), a first bent portion (12) and a second bent portion (13). The first bent portion (12) is vertically disposed at one end of the base plate body (11). The side of the first bent portion (12) opposite to the guide rail body (6) is set as the outer side surface (121) of the bent portion, and the side of the first bent portion (12) abutting against the guide rail body (6) is set as the inner side surface (122) of the bent portion.

3. The elevator guide rail fixing device according to claim 2, characterized in that: The second bending part (13) has an arc (131) at one end. The angle between the first bending part (12) and the second bending part (13) is less than 90°. The bottom plate body (11) has a long waist hole (111) on one side. The length direction of the long waist hole (111) is perpendicular to the first bending part (12).

4. The elevator guide rail fixing device according to claim 3, characterized in that: The cross-section of the guide rail body (6) is T-shaped. One end of the guide rail body (6) is provided with a bottom plate side (62) that abuts against the inner side (122) of the bend. The side of the guide rail body (6) opposite to the guide rail bracket (5) is provided with an inclined surface (61) that abuts against the arc (131).

5. The elevator guide rail fixing device according to claim 4, characterized in that: The bolt assembly (2) includes an integrally formed nut body (21) and a screw body (22). The nut body (21) is disposed at one end of the screw body (22). The nut body (21) is provided with a nut center (211) and a screw center (212). The nut center (211) and the screw center (212) do not coincide. The nut body (21) and the screw body (22) are arranged in an eccentric structure. A first annular groove (23) is provided on the outer side of the connection end of the nut body (21) and the screw body (22). A nut sidewall (213) is provided on the outer side of the nut body (21).

6. The elevator guide rail fixing device according to claim 4, characterized in that: The bolt group (2) mainly consists of a second bolt (7) and an eccentric wheel (8). The eccentric wheel (8) has an internal hexagonal groove (81) and a round hole (82) on one side. One end of the second bolt (7) passes through the round hole (82), the elongated hole (111) and the guide rail bracket (5) in sequence and is threadedly connected to the nut (3). The nut end of the second bolt (7) is embedded in the internal hexagonal groove (81).

7. The elevator guide rail fixing device according to claim 6, characterized in that: The cross-section of the internal hexagonal groove (81) is larger than the nut cross-section of the second bolt (7), the inner diameter of the circular hole (82) is larger than the outer diameter of the screw of the second bolt (7), the axis of the eccentric wheel (8) is eccentrically arranged with the axis of the second bolt (7), and a second annular groove (83) is provided on the other side of the eccentric wheel (8).

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