Spring and safety tongs

Abstract

The utility model discloses a spring and safety tongs, a clamping device is arranged in the safety tongs, the safety tongs are provided with side plates, the spring comprises at least two spring bodies, the spring bodies are symmetrically arranged in the safety tongs, and each spring body comprises a positive pressure part, a side abutting part and a mounting part which are integrally formed and fixedly connected in sequence; the shape of the spring body is matched with that of the side plate, the end, close to the clamping device, of the spring body abuts against the clamping device, and the face, making contact with the clamping device, of the spring body is a plane or a curved face. Compared with the mode of using a U-shaped spring in the prior art, the two spring bodies symmetrically arranged in the safety tongs have the advantages that the use size is small, the occupied space is small, the manufacturing cost is low, batch production can be achieved, the machining error is low, repeated debugging is not needed during installation, meanwhile, the problem of displacement in the use process can be avoided, and the safety is high.

Description

Technical Field

[0001] This disclosure relates to the field of elevator braking technology, specifically to a spring and a safety clamp. Background Technology

[0002] The safety brake is an important component of the elevator safety protection system. When the elevator experiences abnormal speed, the speed governor activates, simultaneously pulling the safety brake to bring the elevator car to an emergency stop and hold it on the guide rails.

[0003] Currently, safety clamps on the market, regardless of elevator size, all use a single U-shaped spring structure. The size of the U-shaped spring and the safety clamp is adjusted to suit different elevators. The requirement for (elevator rated load + car weight) is... For high-value elevators, the volume and thickness of this type of U-shaped spring need to be increased, and the U-shaped spring also requires a larger safety space, resulting in excessively high manufacturing, testing, assembly, debugging, and braking force testing costs, making mass production difficult. Furthermore, due to processing errors and material springback errors, each U-shaped spring has different opening dimensions and angles. This requires repeated adjustments to the gaps between the two wedges and the sides of the elevator guide rail for each safety clamp, causing the U-shaped spring to shift relative to the center of the elevator guide rail. This cannot guarantee that the braking force of the two wedges on the elevator guide rail is consistent, leading to the safety hazard of asynchronous wedge action, and the overall product debugging efficiency is slow. Therefore, we propose a spring and safety clamp design. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a spring and a safety clamp.

[0005] In a first aspect, this application provides a spring applied to an elevator safety clamp, the safety clamp having a side plate, wherein when the elevator is braked, the spring's elastic force pushes the clamping device of the safety clamp to clamp the elevator guide rail, the spring comprising:

[0006] The spring body has at least two spring bodies, which are symmetrically arranged inside the safety clamp. The spring body includes an integrally formed positive pressure part, a side abutment part, and a mounting part that are fixedly connected in sequence.

[0007] The shape of the spring body matches the side plate, and the end of the spring body near the clamping device abuts against the clamping device, and the surface of the spring body and the clamping device in contact is a plane or a curved surface.

[0008] According to the technical solution provided in the embodiments of this application, the side plate is an L-shaped structure, which has a first section and a second section fixedly connected. One end of the first section extends into the second section in a direction close to the interior of the safety clamp. The planes where the first section and the second section are located are perpendicular to each other.

[0009] The mounting part is connected to the first segment via a mounting member and is parallel to the first segment. The side abutment extends along a first direction, and a first angle is formed between the first direction and the plane where the first segment is located. Its opening direction faces the clamping device. The positive pressure part is a curved section, and the side of it that abuts against the clamping device is a curved surface. The side of the clamping device that abuts against the positive pressure part is a flat surface.

[0010] Alternatively, the mounting portion is parallel to the second segment and connected to the second segment via the mounting member; the side abutment portion is parallel to the first segment; the positive pressure portion has a fixedly connected third segment and a fourth segment; the third segment extends along a second direction; a second angle is formed between the second direction and the plane containing the first segment; its opening direction faces the clamping device; the fourth segment is a curved segment; the side of the fourth segment that abuts against the clamping device is a curved surface; and the side of the clamping device that abuts against the fourth segment is a flat surface.

[0011] Alternatively, the mounting portion is parallel to the second segment and connected to the second segment via a mounting member, the side abutment portion extends along a third direction, the third direction forms a third angle with the plane where the first segment is located, its opening direction faces the clamping device, the positive pressure portion is a curved section, the side of it abutting the clamping device is a curved surface, and the side of the clamping device abutting the positive pressure portion is a flat surface;

[0012] Alternatively, the mounting portion is parallel to the second segment and connected to the second segment via a mounting member, the side abutment portion is a continuous curved structure, the positive pressure portion is a curved segment, the side of the positive pressure portion that abuts against the clamping device is a curved surface, and the side of the clamping device that abuts against the positive pressure portion is a flat surface;

[0013] Alternatively, the mounting part is an L-shaped structure with a fixedly connected fifth and sixth section. The fifth section is parallel to the first section and is connected to the first section through a mounting piece. The sixth section is parallel to the second section. The side abutment and the positive pressure part are both parallel to the first section. The side of the clamping device that abuts against the positive pressure part is a curved surface.

[0014] Alternatively, the mounting part is an L-shaped structure with a fixedly connected seventh and eighth segment. The seventh segment is parallel to the first segment, and the eighth segment is parallel to the second segment and connected to the second segment through a mounting member. The side abutment and the positive pressure part are both parallel to the first segment, and the side of the clamping device that abuts against the positive pressure part is a curved surface.

[0015] According to the technical solution provided in the embodiments of this application, the side plate is an L-shaped structure, which has a fixedly connected ninth segment and a tenth segment. One end of the ninth segment extends the tenth segment in a direction away from the interior of the safety clamp, and the planes where the ninth segment and the tenth segment are located are perpendicular to each other.

[0016] The mounting part is parallel to the tenth segment and is connected to the tenth segment by a mounting member. The side abutment part is parallel to the ninth segment. The positive pressure part has an eleventh segment and a twelfth segment that are fixedly connected. The eleventh segment extends along the fourth direction and forms a fourth angle between the fourth direction and the plane where the ninth segment is located. Its opening direction faces the clamping device. The twelfth segment is a curved segment. The side of the clamping device that abuts against the twelfth segment is a plane.

[0017] Alternatively, the mounting portion is parallel to the tenth segment and is connected to the tenth segment via a mounting member. The side abutment extends along the fifth direction, forming a fifth angle between the fifth direction and the plane containing the ninth segment. Its opening direction faces the clamping device. The positive pressure portion is a curved section, and the side of the clamping device that abuts against the positive pressure portion is a plane.

[0018] According to the technical solution provided in the embodiments of this application, the side plate has a fixedly connected thirteenth segment and a fourteenth segment, the thirteenth segment being an S-shaped structure and the fourteenth segment being a straight segment;

[0019] The mounting part, the side abutment part, and the positive pressure part are all straight sections and are all parallel to the fourteenth section. The mounting part is connected to the thirteenth section through a mounting component. The side of the clamping device that abuts against the positive pressure part is a curved surface.

[0020] Alternatively, both the mounting portion and the side abutment portion are straight sections and parallel to the fourteenth section. The mounting portion is connected to the thirteenth section via a mounting member. The positive pressure portion is a curved section, and the side of the clamping device that abuts against the positive pressure portion is a plane.

[0021] Alternatively, the mounting portion may be a straight section parallel to the fourteenth section and connected to the thirteenth section via a mounting component; the side abutment may be an S-shaped structure; the positive pressure portion may be a curved section; and the side of the clamping device that abuts against the positive pressure portion may be a flat surface.

[0022] According to the technical solution provided in the embodiments of this application, the side plate has a fifteenth segment and a sixteenth segment that are fixedly connected, the fifteenth segment is a U-shaped structure, and the sixteenth segment is a straight segment;

[0023] The mounting portion is a straight section, which is perpendicular to the sixteenth section and is connected to the fifteenth section through a mounting member. The side abutment portion extends along the sixth direction, and a sixth angle is formed between the sixth direction and the plane where the sixteenth section is located. The opening of the sixth angle faces the clamping device. The positive pressure portion is a curved section, and the side of the clamping device that abuts against the positive pressure portion is a plane.

[0024] According to the technical solution provided in the embodiments of this application, the spring body has a Z-shaped structure, the positive pressure part is located in the middle, and both sides of it have side abutments and mounting parts in sequence, and the side abutments and mounting parts on both sides are symmetrically arranged. The mounting part is provided with a limit groove, and the mounting part is a straight section or a curved section; the positive pressure part is a straight section or a curved section, and the side of the clamping device that abuts against the positive pressure part is a curved surface or a plane.

[0025] According to the technical solution provided in the embodiments of this application, the mounting part is connected to the side plate via a mounting component;

[0026] Alternatively, the side plate may be provided with a first limiting platform corresponding to the limiting groove, the first limiting platform being used to limit the spring body.

[0027] According to the technical solution provided in the embodiments of this application, the clamping device abuts against the side wall of the spring body and is provided with a second limiting platform corresponding to the limiting groove, and the positive pressure part is close to the side plate.

[0028] Secondly, this application provides a safety clamp that utilizes the aforementioned spring, the safety clamp comprising:

[0029] The clamp body includes a side plate, and an installation space is formed inside the clamp body, through which the elevator guide rail passes.

[0030] A clamping device for clamping the elevator guide rail, the clamping device including a clamping assembly including brake wedges symmetrically arranged on both sides of the elevator guide rail;

[0031] The clamping device further includes a guide assembly comprising two guide blocks, which are respectively disposed on the opposite side of the two brake wedges and are slidably connected to the brake wedges for guiding the movement of the brake wedges. A limit plate is provided on the guide block for limiting the movement of the brake wedges.

[0032] The clamping device further includes a lifting assembly connected to the brake wedge, which is used to drive the brake wedge to move along the guide block when the elevator brakes, so that the two brake wedges come close together and clamp the elevator guide rail.

[0033] The guide block and the spring body abut against each other.

[0034] According to the technical solution provided in the embodiments of this application, there are two side plates, which are symmetrically arranged on both sides of the elevator guide rail. The two side plates are either separate structures or formed into an integral structure through a back plate.

[0035] The two spring bodies are respectively mounted on the two side plates by mounting members, or the two spring bodies are mounted on the two side plates by a single mounting member.

[0036] In summary, this technical solution specifically discloses a spring and a safety clamp. The safety clamp is equipped with a clamping device inside. The safety clamp has a side plate. The spring includes a spring body, of which there are at least two, and they are symmetrically arranged inside the safety clamp. The spring body includes an integrally formed positive pressure part, a side abutment part, and a mounting part that are fixedly connected in sequence. The shape of the spring body matches the side plate, and the end of the spring body near the clamping device abuts against the clamping device. The surface of the spring body in contact with the clamping device is a plane or a curved surface.

[0037] By using two symmetrically arranged spring bodies inside the safety clamp, compared to the U-shaped spring method used in the prior art, it is smaller in size, occupies less space, has lower manufacturing cost, can be mass-produced, has lower processing error, does not require repeated adjustments during installation, and can avoid displacement problems during use, thus ensuring high safety. Attached Figure Description

[0038] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0039] Figure 1 This is a schematic diagram of the spring body.

[0040] Figure 2 For safety clamp application Figure 1 The diagram shows the spring body.

[0041] Figure 3 This is a schematic diagram of the second form of the spring body.

[0042] Figure 4 For safety clamp application Figure 3 The diagram shows the spring body.

[0043] Figure 5 A schematic diagram of the third type of spring body used in safety clamps.

[0044] Figure 6 A schematic diagram of the fourth type of spring body used in safety clamps.

[0045] Figure 7 This is a schematic diagram of the fifth type of spring body used in safety clamps.

[0046] Figure 8 A schematic diagram of the sixth form of the spring body used in the safety clamp.

[0047] Figure 9 This is a schematic diagram of the seventh type of spring body used in safety clamps.

[0048] Figure 10 This is a schematic diagram of the eighth form of the spring body used in safety clamps.

[0049] Figure 11 A schematic diagram of the ninth form of the spring body used in safety clamps.

[0050] Figure 12 This is a schematic diagram of the tenth form of the spring body used in safety clamps.

[0051] Figure 13 This is a schematic diagram of the eleventh form of the spring body used in the safety clamp.

[0052] Figure 14 A schematic diagram of the twelfth form of the spring body used in the safety clamp.

[0053] Figure 15 This is a schematic diagram of the body of a spring with a U-shaped structure.

[0054] Figure 16 The schematic diagram shows the straight section of the mounting part of the spring body with a Z-shaped structure.

[0055] Figure 17 The diagram shows the curved section of the mounting part of the spring body with a U-shaped structure.

[0056] Figure 18 This is a schematic diagram showing the connection between the Z-shaped spring body and the side plate via mounting parts.

[0057] Figure 19 This is a schematic diagram of the first limiting stage.

[0058] Figure 20 This is a schematic diagram of the second limiting stage.

[0059] Figure 21 This is a schematic diagram showing the side panel and back panel being molded as a single piece.

[0060] Figure 22 This is a schematic diagram of a safety clamp.

[0061] Numbered in the diagram: 1. Side plate; 2. Spring body; 3. Positive pressure part; 4. Side abutment part; 5. Mounting part; 6. First section; 7. Second section; 8. Mounting component; 9. Third section; 10. Fourth section; 11. Fifth section; 12. Sixth section; 13. Ninth section; 14. Tenth section; 15. Fifteenth section; 16. Sixteenth section; 17. Limiting groove; 18. First limiting platform; 19. Second limiting platform; 20. Brake wedge; 21. Guide block; 22. Limiting plate; 23. Back plate; 24. Middle plate; 25. Lifting rod; 26. Pin; 27. Screw; 28. First mounting hole; 29. ​​First locking component; 30. Second locking component; 31. Seventh section; 32. Eighth section; 33. Eleventh section; 34. Twelfth section; 35. Thirteenth section; 36. Fourteenth section. Detailed Implementation

[0062] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0063] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0064] Example 1

[0065] Please refer to Figure 1 and Figure 2 As shown, a spring is used in an elevator safety clamp, the safety clamp including a side plate 1;

[0066] The spring includes a spring body 2, of which there are at least two, and which are symmetrically arranged inside the safety clamp;

[0067] The spring body 2 includes an integrally formed positive pressure part 3, a side abutment part 4 and a mounting part 5 that are fixedly connected in sequence, which facilitates its manufacturing and processing, simplifies the production process and saves production costs.

[0068] The mounting part 5 has two first mounting holes 28 for connecting the mounting part 8, thereby installing the spring body 2; the mounting part 8 can be a bolt or a screw.

[0069] After the mounting part 8 passes through the side plate 1 and the first mounting hole 28, it is locked by the first locking part 29. A second locking part 30 is also provided between the first locking part 29 and the spring body 2. The first locking part 29 can be a nut, and the second locking part 30 can be a washer.

[0070] The spring body 2 has a structure and shape that matches the side plate 1, and the end of the spring body 2 away from the side plate 1 abuts against the clamping device of the safety clamp. When the elevator is braked, the elastic force of the spring body 2 can push the clamping device to clamp the elevator guide rail, thereby achieving elevator braking.

[0071] The surface in contact between the spring body 2 and the clamping device is either a plane or a curved surface.

[0072] Side plate 1 has an L-shaped structure, consisting of a first section 6 and a second section 7 integrally formed and fixedly connected. One end of the first section 6 extends towards the interior of the safety clamp, from which the second section 7 extends. The planes containing the first section 6 and the second section 7 are perpendicular to each other. The first section 6 is parallel to... Figure 2 In the vertical direction, the second segment 7 is parallel to Figure 2 Mid-horizontal direction;

[0073] The mounting section 5 is a straight section, which is parallel to the first section 6 and is connected to the first section 6 through the mounting piece 8;

[0074] The side abutment 4 is a straight section that extends along a first direction. A first angle is formed between the first direction and the plane where the first section 6 is located. Its opening direction faces the clamping device. The mounting part 5 and the side abutment 4 are connected in a transitional manner.

[0075] The positive pressure section 3 is a curved section, and the side of it that abuts against the clamping device is a curved surface. Correspondingly, the side of the clamping device that abuts against the positive pressure section 3 is a flat surface. The positive pressure section 3 and the side abutment section 4 are connected in a transitional manner.

[0076] In some other implementations, such as Figure 3 and Figure 4 As shown, the mounting part 5 is a straight section, which is parallel to the second section 7 and is connected to the second section 7 through the mounting part 8;

[0077] The side abutment part 4 is a straight section, parallel to the first section 6, and the mounting part 5 and the side abutment part 4 are connected by a transition.

[0078] The positive pressure part 3 has a third section 9 and a fourth section 10 that are fixedly connected. The third section 9 is close to the side abutment part 4 and is transitionally connected to the side abutment part 4. The third section 9 extends along the second direction, and a second angle is formed between the second direction and the plane where the first section 6 is located. Its opening direction faces the clamping device.

[0079] The fourth segment 10 and the third segment 9 are connected by a transition, and the side of the clamping device that abuts against it is a curved surface. Correspondingly, the side of the clamping device that abuts against the curved section is a flat surface.

[0080] In some other implementations, such as Figure 5 As shown, the mounting part 5 is a straight section, which is parallel to the second section 7 and connected to the second section 7 through the mounting member 8;

[0081] The side abutment 4 is a straight section that extends along a third direction, and the mounting part 5 and the side abutment 4 are connected in a transitional manner. A third angle is formed between the third direction and the plane where the first section 6 is located, and its opening direction is towards the clamping device.

[0082] The positive pressure section 3 is a curved section, and the side of it that abuts against the clamping device is a curved surface. Correspondingly, the side of the clamping device that abuts against the positive pressure section 3 is a flat surface. The positive pressure section 3 and the side abutment section 4 are connected in a transitional manner.

[0083] In some other implementations, such as Figure 6 As shown, the mounting part 5 is a straight section, which is parallel to the second section 7 and connected to the second section 7 through the mounting member 8;

[0084] The side abutment 4 has a continuous curved structure, similar to a Z-shaped structure, and the side abutment 4 and the mounting part 5 are connected in a transitional manner.

[0085] The positive pressure section 3 is a curved section, and the side of it that abuts against the clamping device is a curved surface. Correspondingly, the side of the clamping device that abuts against the positive pressure section 3 is a flat surface. The positive pressure section 3 and the side abutment section 4 are connected in a transitional manner.

[0086] In some other implementations, such as Figure 7 As shown, the mounting part 5 has an L-shaped structure, which has a fixedly connected fifth section 11 and sixth section 12. The fifth section 11 is parallel to the first section 6 and is connected to the first section 6 through the mounting part 8. The sixth section 12 is parallel to the second section 7, and the fifth section 11 and the sixth section 12 are connected in transition.

[0087] Both the side abutment part 4 and the positive pressure part 3 are straight sections and are parallel to the first section 6. The side abutment part 4 and the sixth section 12 are connected in transition. The side of the positive pressure part 3 that abuts against the clamping device is a plane, and correspondingly, the side of the clamping device that abuts against the positive pressure part 3 is a curved surface.

[0088] In some other implementations, such as Figure 8 As shown, the mounting part 5 has an L-shaped structure, which has a fixedly connected seventh section 31 and eighth section 32. The seventh section 31 is parallel to the first section 6, and the eighth section 32 is parallel to the second section 7 and is connected to the second section 7 through the mounting part 8; the seventh section 31 and the eighth section 32 are connected in a transitional manner.

[0089] Both the side abutment part 4 and the positive pressure part 3 are straight sections and are parallel to the first section 6. The side abutment part 4 and the eighth section 32 are connected in transition. The side of the positive pressure part 3 that abuts against the clamping device is a plane, and correspondingly, the side of the clamping device that abuts against the positive pressure part 3 is a curved surface.

[0090] Example 2

[0091] Unlike Embodiment 1, in this embodiment, as Figure 9As shown, side plate 1 has an L-shaped structure, which has a ninth segment 13 and a tenth segment 14 integrally formed and fixedly connected. One end of the ninth segment 13 extends into the tenth segment 14 in a direction away from the interior of the safety clamp, and the ninth segment 13 and the tenth segment 14 are perpendicular to each other. The ninth segment 13 is parallel to the... Figure 9 In the vertical direction, the tenth segment 14 is parallel to Figure 9 Mid-horizontal direction;

[0092] Mounting section 5 is a straight section and is parallel to the tenth section 14. Mounting section 5 is connected to the tenth section 14 through mounting part 8.

[0093] The side abutment 4 is a straight section, which is parallel to the ninth section 13. The side abutment 4 and the mounting section 5 are connected in a transitional manner.

[0094] The positive pressure part 3 has an eleventh segment 33 and a twelfth segment 34 that are fixedly connected. The eleventh segment 33 is close to the side abutment part 4 and the eleventh segment 33 and the side abutment part 4 are connected in a transition. The eleventh end 33 is a straight segment that extends along the fourth direction. The fourth direction and the plane where the ninth segment 13 is located form a fourth angle. Its opening direction is towards the clamping device. The twelfth segment 34 is a curved segment. The side of the segment that abuts against the clamping device is a curved surface. Correspondingly, the side of the clamping device that abuts against the twelfth segment 34 is a flat surface.

[0095] In some other implementations, such as Figure 10 As shown, the mounting part 5 is a straight section, which is parallel to the tenth section 14 and is connected to the tenth section 14 through the mounting part 8;

[0096] The side abutment 4 is a straight section that extends along the fifth direction. The fifth direction and the plane containing the ninth section 13 form a fifth angle, and its opening direction faces the clamping device. The side abutment 4 and the mounting section 5 are connected in a transitional manner.

[0097] The positive pressure section 3 is a curved section, which is connected to the side abutment section 4. The side of the positive pressure section 3 that abuts against the clamping device is a curved surface, and correspondingly, the side of the clamping device that abuts against the positive pressure section 3 is a flat surface.

[0098] Example 3

[0099] Unlike Embodiment 1 and Embodiment 2, in this embodiment, as Figure 11 As shown, the side plate 1 has a thirteenth segment 35 and a fourteenth segment 36 that are integrally formed and fixedly connected. The thirteenth segment 35 has an S-shaped structure, and the fourteenth segment 36 is a straight segment that is parallel to the plane. Figure 11 In the vertical direction;

[0100] Mounting part 5, side abutment part 4 and positive pressure part 3 are all straight sections and are parallel to the fourteenth section 36. Mounting part 5 is connected to the thirteenth section 35 through mounting part 8. The side of positive pressure part 3 that abuts against the clamping device is flat, and correspondingly, the side of clamping device that abuts against positive pressure part 3 is curved.

[0101] In some other implementations, such as Figure 12 As shown, both the mounting part 5 and the side abutment part 4 are straight sections and are parallel to the fourteenth section 36. The mounting part 5 is connected to the thirteenth section 35 through the mounting member 8.

[0102] The positive pressure section 3 is a curved section that transitions to the side abutment section 4. The side of the positive pressure section 3 that abuts against the clamping device is a curved surface, while the side of the clamping device that abuts against the positive pressure section 3 is a flat surface.

[0103] In some other implementations, such as Figure 13 As shown, the mounting section 5 is a straight section, which is parallel to the fourteenth section 36 and is connected to the thirteenth section 35 through the mounting member 8;

[0104] The side abutment part 4 has an S-shaped structure, which is transitionally connected to the mounting part 5;

[0105] The positive pressure section 3 is a curved section that transitions to the side abutment section 4. The side of the positive pressure section 3 that abuts against the clamping device is a curved surface, while the side of the clamping device that abuts against the positive pressure section 3 is a flat surface.

[0106] Example 4

[0107] Unlike Embodiments 1, 2, and 3, in this embodiment, as... Figure 14 As shown, the side plate 1 has a fifteenth segment 15 and a sixteenth segment 16 integrally formed and fixedly connected. The fifteenth segment 15 has a U-shaped structure, and the sixteenth segment 16 is a straight segment, which is parallel to the... Figure 14 In the vertical direction;

[0108] Mounting section 5 is a straight section, which is perpendicular to the sixteenth section 16 and is connected to the fifteenth section 15 through mounting part 8;

[0109] The side abutment 4 is a straight section, which is connected to the mounting section 5 in a transitional manner, and extends along the sixth direction. The sixth direction and the plane where the sixteenth section 16 is located form a sixth angle, and the opening of the sixth angle faces the clamping device.

[0110] The positive pressure section 3 is a curved section, which is connected to the side abutment section 4. The side of the positive pressure section 3 that abuts against the clamping device is a curved surface, and correspondingly, the side of the clamping device that abuts against the positive pressure section 3 is a flat surface.

[0111] Example 5

[0112] Unlike Embodiments 1, 2, 3, and 4, in this embodiment, as... Figure 15 , Figure 16 and Figure 17As shown, the spring body 2 has a Z-shaped structure, with the positive pressure part 3 located in the middle. Both sides of the spring body have side abutment parts 4 and mounting parts 5 in sequence, and the side abutment parts 4 and mounting parts 5 on both sides are symmetrically arranged. The mounting part 5 is provided with a limit groove 17, and the mounting part 5 is a straight section or a curved section.

[0113] The positive pressure section 3 is a straight section or a curved section, and the side of it that abuts against the clamping device is a flat surface or a curved surface. Correspondingly, the side of the clamping device that abuts against the positive pressure section 3 is a curved surface or a flat surface.

[0114] like Figure 18 As shown, the mounting part 5 is connected to the side plate 1 via the mounting part 8, at which time the positive pressure part 3 approaches the clamping device and abuts against the clamping device.

[0115] In some other implementations, such as Figure 19 As shown, the side plate 1 is provided with a first limiting platform 18 corresponding to the limiting groove 17. The first limiting platform 18 extends into the limiting groove 17, so that the spring body 2 can be installed and the spring body 2 can be limited to prevent the spring body 2 from shifting or rotating, thereby ensuring that no accident occurs during the elevator braking process; at this time, the positive pressure part 3 approaches the clamping device and abuts against the clamping device.

[0116] In some other implementations, such as Figure 20 As shown, the clamping device is provided with a second limiting platform 19, which extends into the limiting groove 17, thereby installing the spring body 2 on the clamping device. At this time, the positive pressure part 3 abuts against the side plate 1.

[0117] Example 6

[0118] This embodiment provides a safety clamp, which is equipped with a spring provided in embodiments one to five above;

[0119] like Figure 21 and Figure 22 As shown, a safety clamp includes:

[0120] The clamp body includes a side plate 1, a bottom plate and a top plate, and an installation space is formed between the side plate 1, the bottom plate and the top plate, through which the elevator guide rail passes.

[0121] The two symmetrical side plates 1 can be separate, and optionally, a back plate 23 is also included. The two symmetrical side plates 1 are integrated into a single structure through the back plate 23, which can strengthen the overall structural strength of the clamp body and increase the service life of the clamp body.

[0122] Furthermore, the connection between the spring body 2 and the side plate 1 can be achieved by using two mounting pieces 8 to install the two spring bodies 2 onto the two side plates 1 respectively, or by using one mounting piece 8 to directly install the two spring bodies 2 onto the two side plates 1 respectively.

[0123] The overall strength of the safety clamp is enhanced by the integral molding structure of the side plate 1 and the back plate 23, and the structure in which the two spring bodies 2 are mounted by a mounting piece 8.

[0124] A safety clamp also includes:

[0125] The clamping device includes a clamping assembly, which includes two brake wedges 20 symmetrically arranged inside the installation space. The two brake wedges 20 are symmetrically arranged on both sides of the elevator guide rail. Anti-slip components are provided on the side wall of the brake wedges 20 near the elevator guide rail to increase the friction between them and the elevator guide rail and enhance the braking effect.

[0126] The clamping device also includes a guide assembly, which includes two guide blocks 21 symmetrically arranged in the installation space. The two guide blocks 21 are located on the opposite side of the two brake wedges 20, and the opposite sidewalls of the two guide blocks 21 abut against the spring body 2.

[0127] A needle roller array is provided between the guide block 21 and the brake wedge 20 to reduce the friction force when the brake wedge 20 moves. Limiting plates 22 are also provided on both sides of the guide block 21 to guide the movement of the brake wedge 20 and prevent the brake wedge 20 from deviating.

[0128] The clamp body is also provided with a middle plate 24, on which a guide part is provided. Correspondingly, the top plate of the clamp body is also provided with a guide part, which corresponds to the bottom and top of the guide block 21 respectively, and can guide the movement of the guide block 21.

[0129] The clamping device also includes a lifting assembly, which has a lifting rod 25. The bottom of the lifting rod 25 extends through the top plate of the clamp body into the installation space and is connected to a connecting plate. The connecting plate has elongated holes corresponding to two brake wedges 20. The brake wedges 20 have pin holes, and pin shafts 26 are installed in the pin holes and extend into the elongated holes.

[0130] A screw 27 is provided on the side of the spring body 2 away from the clamping device. The end of the screw 2 away from the spring body 2 extends through the side plate 1 to the outside of the clamp body. A nut and a washer are provided on the screw 27 to increase the preload.

[0131] Working principle: When the elevator needs to be braked, the brake above the elevator pulls the lifting rod 25 upward, causing the connecting plate to move upward and driving the two brake wedges 20 upward. During the upward movement of the two brake wedges 20, they move closer to each other, and the anti-slip parts contact the elevator guide rail. Since the elevator guide rail is located between the two brake wedges 20, the cross-section of the guide block 21 gradually decreases from the top to the bottom, while the cross-section of the brake wedge 20 increases from the top to the bottom. In the early stage of contact, the two brake wedges 20 will push the two guide blocks 21 away from each other, thereby applying a pushing force to the spring body 2. Under the elastic force of the spring body 2, the guide block 21 is pushed back, which in turn makes the two brake wedges 20 move closer together, and finally clamps the elevator guide rail to achieve elevator braking.

[0132] By using a split design, two spring bodies 2 are symmetrically arranged inside the clamp body. The spring bodies 2 are connected to the side plate 1 or the guide block 21, which fixes the spring bodies 2 and prevents them from shifting. Compared with the U-shaped spring method used in the prior art, the spring provided in this application is more stable in use, and the one-piece molded structure increases the strength of the spring bodies 2. Compared with the U-shaped spring, it is smaller in size and occupies less space inside the clamp body, thus saving materials and costs, and is suitable for mass production.

[0133] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A spring used in an elevator safety clamp, the safety clamp having a side plate (1), wherein when the elevator is braked, the spring force pushes the clamping device of the safety clamp to clamp the elevator guide rail, characterized in that, The spring includes: The spring body (2) has at least two spring bodies (2) and is symmetrically arranged inside the safety clamp. The spring body (2) includes an integrally formed positive pressure part (3), a side abutment part (4) and a mounting part (5) that are fixedly connected in sequence. The shape of the spring body (2) matches the side plate (1), and the end of the spring body (2) near the clamping device abuts against the clamping device, and the surface of the spring body (2) and the clamping device in contact is a plane or a curved surface.

2. A spring according to claim 1, characterized in that, The side plate (1) has an L-shaped structure, which has a first section (6) and a second section (7) that are fixedly connected. One end of the first section (6) extends into the second section (7) in a direction close to the inside of the safety clamp. The planes where the first section (6) and the second section (7) are located are perpendicular to each other. The mounting part (5) is connected to the first segment (6) via the mounting member (8) and is parallel to the first segment (6). The side abutment part (4) extends along the first direction, and the first direction and the plane where the first segment (6) is located form a first angle. Its opening direction faces the clamping device. The positive pressure part (3) is a curved section, and the side of it that abuts against the clamping device is a curved surface. The side of the clamping device that abuts against the positive pressure part (3) is a flat surface. Alternatively, the mounting part (5) is parallel to the second segment (7) and connected to the second segment (7) by the mounting member (8), the side abutment part (4) is parallel to the first segment (6), the positive pressure part (3) has a fixedly connected third segment (9) and fourth segment (10), the third segment (9) extends along the second direction, the second direction and the plane where the first segment (6) is located form a second angle, its opening direction is towards the clamping device, the fourth segment (10) is a curved segment, the side of it that abuts against the clamping device is a curved surface, and the side of the clamping device that abuts against the fourth segment (10) is a flat surface; Alternatively, the mounting part (5) is parallel to the second segment (7) and connected to the second segment (7) through the mounting member (8), the side abutment part (4) extends along a third direction, and a third angle is formed between the third direction and the plane where the first segment (6) is located, and its opening direction is towards the clamping device, the positive pressure part (3) is a curved section, and the side of it that abuts against the clamping device is a curved surface, and the side of the clamping device that abuts against the positive pressure part (3) is a flat surface; Alternatively, the mounting part (5) is parallel to the second section (7) and connected to the second section (7) through the mounting member (8), the side abutment part (4) is a continuous curved structure, the positive pressure part (3) is a curved section, the side of which abuts against the clamping device is a curved surface, and the side of the clamping device abuts against the positive pressure part (3) is a flat surface; Alternatively, the mounting part (5) is an L-shaped structure, which has a fixedly connected fifth section (11) and sixth section (12). The fifth section (11) is parallel to the first section (6) and is connected to the first section (6) through the mounting part (8). The sixth section (12) is parallel to the second section (7). The side abutment part (4) and the positive pressure part (3) are both parallel to the first section (6). The side of the clamping device that abuts against the positive pressure part (3) is a curved surface. Alternatively, the mounting part (5) is an L-shaped structure with a fixedly connected seventh segment (31) and eighth segment (32). The seventh segment (31) is parallel to the first segment (6), and the eighth segment (32) is parallel to the second segment (7) and connected to the second segment (7) through a mounting member (8). The side abutment (4) and the positive pressure part (3) are both parallel to the first segment (6), and the side of the clamping device that abuts against the positive pressure part (3) is a curved surface.

3. A spring according to claim 1, characterized in that, The side plate (1) has an L-shaped structure with a fixedly connected ninth section (13) and tenth section (14). One end of the ninth section (13) extends out of the tenth section (14) in a direction away from the interior of the safety clamp. The planes on which the ninth section (13) and the tenth section (14) are located are perpendicular to each other. The mounting part (5) is parallel to the tenth segment (14) and is connected to the tenth segment (14) by the mounting member (8). The side abutment part (4) is parallel to the ninth segment (13). The positive pressure part (3) has an eleventh segment (33) and a twelfth segment (34) that are fixedly connected. The eleventh segment (33) extends along the fourth direction and forms a fourth angle between the fourth direction and the plane where the ninth segment (13) is located. Its opening direction is towards the clamping device. The twelfth segment (34) is a curved segment. The side of the clamping device that abuts against the twelfth segment (34) is a plane. Alternatively, the mounting part (5) is parallel to the tenth segment (14) and is connected to the tenth segment (14) by the mounting member (8). The side abutment part (4) extends along the fifth direction, and the fifth direction forms a fifth angle with the plane where the ninth segment (13) is located. Its opening direction faces the clamping device. The positive pressure part (3) is a curved section, and the side of the clamping device that abuts against the positive pressure part (3) is a plane.

4. A spring according to claim 1, characterized in that, The side plate (1) has a fixedly connected thirteenth section (35) and fourteenth section (36), the thirteenth section (35) is an S-shaped structure, and the fourteenth section (36) is a straight section; The mounting part (5), the side abutment part (4) and the positive pressure part (3) are all straight sections and are parallel to the fourteenth section (36). The mounting part (5) is connected to the thirteenth section (35) through the mounting part (8). The side of the clamping device that abuts against the positive pressure part (3) is a curved surface. Alternatively, the mounting part (5) and the side abutment part (4) are both straight sections and are parallel to the fourteenth section (36). The mounting part (5) is connected to the thirteenth section (35) through the mounting member (8). The positive pressure part (3) is a curved section. The side of the clamping device that abuts against the positive pressure part (3) is a plane. Alternatively, the mounting part (5) is a straight section, which is parallel to the fourteenth section (36) and is connected to the thirteenth section (35) through the mounting part (8), the side abutment part (4) is an S-shaped structure, the positive pressure part (3) is a curved section, and the side of the clamping device that abuts against the positive pressure part (3) is a plane.

5. A spring according to claim 1, characterized in that, The side plate (1) has a fixedly connected fifteenth segment (15) and sixteenth segment (16), the fifteenth segment (15) is a U-shaped structure, and the sixteenth segment (16) is a straight segment; The mounting part (5) is a straight section, which is perpendicular to the sixteenth section (16) and is connected to the fifteenth section (15) through the mounting member (8). The side abutment part (4) extends along the sixth direction, and a sixth angle is formed between the sixth direction and the plane where the sixteenth section (16) is located. The opening of the sixth angle faces the clamping device. The positive pressure part (3) is a curved section, and the side of the clamping device that abuts against the positive pressure part (3) is a plane.

6. A spring according to claim 1, characterized in that, The spring body (2) has a Z-shaped structure. The positive pressure part (3) is located in the middle. Both sides of the positive pressure part (3) have side abutment parts (4) and mounting parts (5) in sequence. The side abutment parts (4) and mounting parts (5) on both sides are symmetrically arranged. The mounting part (5) is provided with a limit groove (17). The mounting part (5) is a straight section or a curved section. The positive pressure part (3) is a straight section or a curved section. The side of the clamping device that abuts against the positive pressure part (3) is a curved surface or a plane.

7. A spring according to claim 6, characterized in that, The mounting part (5) is connected to the side plate (1) via the mounting component (8); Alternatively, the side plate (1) is provided with a first limiting platform (18) corresponding to the limiting groove (17), and the first limiting platform (18) is used to limit the spring body (2).

8. A spring according to claim 6, characterized in that, The clamping device abuts against the side wall of the spring body (2) and is provided with a second limiting platform (19) corresponding to the limiting groove (17), and the positive pressure part (3) is close to the side plate (1).

9. A safety clamp, wherein the spring described in any one of claims 1-8 is used, characterized in that, The safety clamp includes: The clamp body includes a side plate (1), and an installation space is formed inside the clamp body, through which the elevator guide rail passes; A clamping device for clamping the elevator guide rail, the clamping device including a clamping assembly including brake wedges (20) symmetrically arranged on both sides of the elevator guide rail. The clamping device further includes a guide assembly, which includes two guide blocks (21). The two guide blocks (21) are respectively disposed on the opposite side of the two brake wedges (20) and are slidably connected to the brake wedges (20) to guide the movement of the brake wedges (20). A limit plate (22) is provided on the guide block (21) to limit the movement of the brake wedges (20). The clamping device also includes a lifting assembly connected to the brake wedge (20) for moving the brake wedge (20) along the guide block (21) when the elevator brakes, so that the two brake wedges (20) come close together and clamp the elevator guide rail; The guide block (21) and the spring body (2) abut against each other.

10. A safety clamp according to claim 9, characterized in that, The side plate (1) has two parts and is symmetrically arranged on both sides of the elevator guide rail. The two side plates (1) are either separate structures or form an integral structure through the back plate (23). Two spring bodies (2) are respectively mounted on the two side plates (1) by mounting parts (8), or the two spring bodies (2) are mounted on the two side plates (1) by a mounting part (8).

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