Roller rail clamp

Abstract

The present invention belongs to the technical field of elevator components, and specifically relates to a roller rail clamp, comprising a base, a connecting rod, two rollers and their corresponding wheel seats, the base having a guide rail through-hole, the two rollers symmetrically distributed on both sides of the guide rail through-hole; the rollers are rotatably mounted on their corresponding wheel seats via wheel axles, and the wheel seats are rotatably mounted on the base; the two ends of the connecting rod are rotatably connected to the two wheel seats, and the axial direction of the connecting rod is perpendicular to the axial direction of the rollers; wherein the rotation fulcrum of the wheel seat and the rotation fulcrum of the connecting rod thereon are respectively located on both sides of the rotation fulcrum of their corresponding rollers. The roller rail clamp of the present invention utilizes the two ends of the connecting rod to be rotatably connected to the two wheel seats, and the two wheel seats are rotatably mounted on the base, forming a parallelogram connection structure, so that the car can follow the car when it deviates without causing changes in friction resistance.

Description

Technical Field

[0001] The invention belongs to the technical field of elevator components, and in particular relates to a roller rail clamp. Background Art

[0002] In order to avoid the shaking caused by users entering and exiting the elevator, a rail clamp is provided on the elevator car to prevent users from feeling dizzy. For example, a roller-type rail clamp device is disclosed in publication number CN111268533A.

[0003] The existing roller rail clamp has the following shortcomings:

[0004] 1. When the car deviates, the friction resistance between the roller and the elevator guide rail is likely to change;

[0005] 2. It is inconvenient to adjust the positive pressure of the roller on the elevator guide rail. Summary of the Invention

[0006] Based on the above-mentioned deficiencies in the prior art, one of the objects of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the objects of the present invention is to provide a roller rail clamp that meets one or more of the above-mentioned requirements.

[0007] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0008] A roller rail clamp comprises a base, a connecting rod, two rollers and corresponding wheel seats, wherein the base has a guide rail through-hole, and the two rollers are symmetrically distributed on both sides of the guide rail through-hole;

[0009] The roller is rotatably mounted on its corresponding wheel seat through the wheel shaft, and the wheel seat is rotatably mounted on the base;

[0010] The two ends of the connecting rod are rotatably connected to the two wheel seats respectively, and the axial direction of the connecting rod is perpendicular to the axial direction of the roller; wherein the rotation fulcrum of the wheel seat and the rotation fulcrum of the connecting rod thereon are respectively located on both sides of the rotation fulcrum of the corresponding roller.

[0011] As a preferred solution, at least one end of the connecting rod is provided with a positive pressure adjusting member for adjusting the distance between the first roller and the second roller to adjust the positive pressure of the rollers on the elevator guide rail.

[0012] As a preferred solution, the positive pressure adjusting member is threadedly connected to the connecting rod.

[0013] As a preferred solution, the wheel seat is a cam structure, and its protrusion is rotatably mounted on the base.

[0014] As a preferred solution, it also includes a roller braking mechanism arranged in a one-to-one correspondence with the rollers, for braking the rollers in the target state.

[0015] As a preferred solution, the roller brake mechanism includes a brake ring, a friction member and a drive mechanism, the brake ring is coaxially fixedly connected to the roller, and the brake ring is located between the roller and its corresponding wheel seat;

[0016] The friction member is mounted on the wheel seat and is located inside the brake ring;

[0017] The driving mechanism is used for driving the friction member to move along the radial direction of the brake ring so as to come into friction contact with the brake ring.

[0018] As a preferred solution, the driving mechanism includes a driving member, a pressure plate, a guide pull rod, a trigger member, a wedge block, and a return spring. The pressure plate is connected to one end of the guide pull rod, the guide pull rod passes through the wheel seat along its axial direction and guides and cooperates, and the other end of the guide pull rod is connected to the trigger member. The trigger member is used to trigger the wedge block to move radially and outwardly along the brake ring, and the friction member is provided on the wedge block; the return spring is used to reset the wedge block to move radially outward along the brake ring;

[0019] The driving member is mounted on the wheel seat and is used to magnetically drive the pressure plate.

[0020] As a preferred solution, there are two friction members, one located on each side of the wheel axle; accordingly, there are two wedge blocks, two return springs, and both ends of the return spring are connected to the two wedge blocks respectively.

[0021] As a preferred solution, the trigger member includes a base frame and rollers installed on both sides of the base frame, the base frame is fixedly connected to the guide rod, and the two rollers are respectively in contact with the inclined surfaces of the two wedge blocks.

[0022] As a preferred solution, there are two groups of trigger members, which are respectively located on both sides of the wheel axle; accordingly, the number of the guide rods is two.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The roller rail clamp of the present invention utilizes two ends of a connecting rod to be rotatably connected to two wheel seats respectively, and the two wheel seats are rotatably mounted on a base to form a parallelogram connection structure, thereby achieving follow-up movement when the car deviates without causing changes in friction resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 1 is a schematic structural diagram of a roller rail clamp according to embodiment 1 of the present invention;

[0026] Figure 2 1 is a front structural schematic diagram of the roller rail clamp according to embodiment 1 of the present invention;

[0027] Figure 3 yes Figure 2 A partial view of the AA section view;

[0028] Figure 4 1 is a schematic diagram of the rear view of the roller rail clamp according to embodiment 1 of the present invention (partial structure omitted);

[0029] Figure 5 2 is a schematic structural diagram of the left roller brake mechanism and the brake ring of Example 1 of the present invention;

[0030] Figure 6 2 is a schematic structural diagram of the left roller brake mechanism of Example 1 of the present invention;

[0031] Figure 7 It is a side structural schematic diagram of the left roller brake mechanism of Example 1 of the present invention. DETAILED DESCRIPTION

[0032] To more clearly illustrate the embodiments of the present invention, specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive efforts.

[0033] Example 1:

[0034] like Figure 1-7 As shown, the roller rail clamp of this embodiment includes an outer frame 1, a left roller 2, a right roller 3, a left wheel seat 4, a right wheel seat 5, a connecting rod 6, a left roller braking mechanism and a right roller braking mechanism.

[0035] The outer frame 1 of this embodiment includes a frame structure formed by a base 1a, vertical plates 1b on the left and right sides and the rear side, and a top plate 1c. The front side of the base 1a has a guide rail through-hole 100 for the elevator guide rail to pass through.

[0036] The left roller 2 and the right roller 3 of this embodiment are symmetrically distributed on the left and right sides of the guide rail through-opening 100. Specifically, the left roller 2 is rotatably mounted on the left wheel seat 4 through the wheel axle L, and the right roller 3 is rotatably mounted on the right wheel seat 5 through another wheel axle.

[0037] The left wheel seat 4 and the right wheel seat 5 of this embodiment are respectively rotatably mounted on the support seat 7 fixed on the base 1a. Specifically, the left wheel seat 4 and the right wheel seat 5 of this embodiment are both cam structures, and their protrusions are rotatably mounted on the support seat 7.

[0038] In this embodiment, the left and right ends of the connecting rod 6 are rotatably connected to the left and right wheel bases 4 and 5, respectively. The axial direction of the connecting rod 6 is perpendicular to the axial direction of the left roller 2 (or right roller 3). The rotation fulcrum of the left wheel base 4 and the connecting rod thereon are located above and below the rotation fulcrum of the corresponding left roller 2, respectively. The rotation fulcrum of the right wheel base 5 and the connecting rod thereon are located above and below the rotation fulcrum of the corresponding right roller 3, respectively. This forms a parallelogram connection structure, which enables the car to follow the car when it deviates without causing changes in frictional resistance.

[0039] In addition, in this embodiment, positive pressure adjustment members 8 are provided at both ends of the connecting rod 6 for adjusting the spacing between the left and right rollers, thereby adjusting the positive pressure exerted by the rollers on the elevator guide rails. Specifically, the positive pressure adjustment members 8 in this embodiment are nuts that are threadedly connected to the connecting rod 6, allowing for convenient adjustment of the positive pressure exerted by the rollers on the elevator guide rails.

[0040] The left roller brake mechanism of this embodiment is used to brake the left roller in the target state, and the right roller brake mechanism is used to brake the right roller in the target state. Since the structures of the left and right roller brake mechanisms are the same, the specific structure and installation of the left roller brake mechanism will be described in detail here, and the specific structure and installation of the right roller brake mechanism will not be repeated here.

[0041] The left roller brake mechanism of this embodiment includes a brake ring 9, a friction member 10 and a drive mechanism. The brake ring 9 is coaxially fixedly connected to the left roller 2, and the brake ring 9 is located between the left roller 2 and its corresponding left wheel seat 4; the friction member 10 is installed on the left wheel seat 4 and is located inside the brake ring 9; the drive mechanism is used to drive the friction member 10 to move radially along the brake ring 9 so as to frictionally contact the brake ring 9.

[0042] Specifically, the driving mechanism includes a driving member 11, a pressure plate 12, two guide rods 13, two trigger members 14, two wedges 15, and two return springs 16. The pressure plate 12 is connected to one end of the guide rod 13, and the guide rod 13 passes through the left wheel seat 4 along its axial direction and guides and cooperates. The other end of the guide rod 13 is connected to the trigger member 14. The trigger member 14 is used to trigger the two wedges to move radially and outwardly along the brake ring. The friction member 10 is provided on the wedge. The structure of the friction member 10 is adapted to the inner diameter structure of the brake ring, so that the friction member and the brake ring can be in contact and friction. Among them, the wedge 15 has a waist-shaped hole 150, which is fixed to the left wheel seat 4 by a stud K passing through the waist-shaped hole, which can not only achieve the fixation of the wedge 15, but also achieve the radial and outward movement of the wedge along the brake ring.

[0043] Among them, the two guide rods 13 are respectively located on the upper and lower sides of the wheel axle L, and the two trigger members 14 are respectively located on the upper and lower sides of the wheel axle L, and are driven and connected to the two guide rods 13 in a one-to-one correspondence; the two wedge blocks 15 are respectively located on the left and right sides of the wheel axle L; the two return springs are respectively located on the upper and lower sides of the wheel axle L, and the two ends of the return spring 16 are respectively connected to the two wedge blocks, which are used to reset the wedge blocks along the radial outward movement of the brake ring.

[0044] The driving member 11 of this embodiment is mounted on the left wheel base 4 and is used to magnetically drive the pressure plate 12. The driving member 11 is an electromagnet.

[0045] The trigger member 14 of this embodiment includes a base frame 140 and rollers 141 installed on both sides of the base frame 140. The base frame 140 is fixedly connected to the guide rod 13. The two rollers 140 are in contact with the inclined surfaces X of the two wedge blocks 15 respectively.

[0046] When the roller rail clamp of this embodiment is installed in an elevator car, when the elevator car reaches the target floor, the electromagnet drives the pressure plate, which, through the guide rod, links the roller of the trigger member. The roller-linked wedge moves radially and outward along the brake ring, causing the friction member to contact the brake ring and apply friction braking, thereby achieving roller braking and preventing elevator car sway. The inclined surface of the electromagnetic trigger wedge opens and locks the roller brake, providing wear-compensating locking torque and improving reliability. As the friction member wears, the gap between the pressure plate and the electromagnet decreases, the magnetic attraction increases, and the braking reliability increases.

[0047] Example 2:

[0048] The roller rail clamp of this embodiment is different from that of embodiment 1 in that:

[0049] The trigger can also adopt a wedge structure with inclined surfaces on both sides, which can realize the triggering of two wedges to meet the needs of different applications;

[0050] For other structures, please refer to Example 1.

[0051] Example 3:

[0052] The roller rail clamp of this embodiment is different from that of embodiment 1 in that:

[0053] The roller braking mechanism may also adopt the braking mechanism of the roller in the existing disclosed rail clamping device to meet the requirements of different applications.

[0054] For other structures, please refer to Example 1.

[0055] The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, based on the ideas provided by the present invention, there may be changes in the specific implementation methods, and these changes should also be considered as the scope of protection of the present invention.

Claims

1. A roller rail clamp, characterized in that: It includes a base, a connecting rod, two rollers and their corresponding wheel seats. The base has a guide rail through-hole, and the two rollers are symmetrically distributed on both sides of the guide rail through-hole. The roller is rotatably mounted on its corresponding wheel seat through the wheel shaft, and the wheel seat is rotatably mounted on the base; The two ends of the connecting rod are rotatably connected to the two wheel seats, and the axial direction of the connecting rod is perpendicular to the axial direction of the roller. The rotation fulcrum of the wheel seat and the rotation fulcrum of the connecting rod thereon are respectively located on both sides of the rotation fulcrum of their corresponding rollers. It also includes a roller braking mechanism provided in one-to-one correspondence with the rollers, for braking the rollers in the target state; The roller brake mechanism includes a brake ring, a friction member and a drive mechanism. The brake ring is coaxially fixedly connected to the roller and is located between the roller and its corresponding wheel seat. The friction member is mounted on the wheel seat and is located inside the brake ring; The driving mechanism is used to drive the friction member to move radially along the brake ring so as to come into frictional contact with the brake ring; The driving mechanism includes a driving member, a pressure plate, a guide pull rod, a trigger member, a wedge block, and a return spring. The pressure plate is connected to one end of the guide pull rod, which passes through the wheel seat along its axial direction and guides the other end of the guide pull rod. The trigger member is used to trigger the wedge block to move radially and outwardly along the brake ring. The friction member is provided on the wedge block; the return spring is used to reset the wedge block to move radially outward along the brake ring. The driving member is mounted on the wheel seat and is used to magnetically drive the pressure plate.

2. The roller rail clamp according to claim 1, characterized in that: At least one end of the connecting rod is provided with a positive pressure adjusting member for adjusting the distance between the first roller and the second roller so as to adjust the positive pressure of the rollers on the elevator guide rail.

3. The roller rail clamp according to claim 2, characterized in that: The positive pressure adjusting member is threadedly connected to the connecting rod.

4. The roller rail clamp according to any one of claims 1 to 3, characterized in that: The wheel seat is a cam structure, and the raised portion is rotatably mounted on the base.

5. The roller rail clamp according to claim 1, characterized in that: There are two friction members, which are located on both sides of the wheel axle respectively; correspondingly, there are two wedge blocks, and there are two return springs, with both ends of the return springs connected to the two wedge blocks respectively.

6. The roller rail clamp according to claim 5, characterized in that: The triggering member includes a base frame and rollers installed on both sides of the base frame. The base frame is fixedly connected to the guide pull rod, and the two rollers are respectively in contact with the inclined surfaces of the two wedge blocks.

7. The roller rail clamp according to claim 6, characterized in that: There are two groups of trigger members, which are respectively located on both sides of the wheel axle; accordingly, there are two guide rods.

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