CN213087886U

CN213087886U - Stroke limiter for door rolling machine

Info

Publication number: CN213087886U
Application number: CN202021436459.3U
Authority: CN
Inventors: 王耀庭; 王震
Original assignee: Wuxi Welda Automation Machinery Co ltd
Current assignee: Wuxi Welda Automation Machinery Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-04-30
Anticipated expiration: 2030-07-20

Abstract

The utility model relates to a stroke limiter for rolling door machine, it includes: a support assembly; the transmission assembly comprises a screw rod which is rotatably arranged in the first end plate and the second end plate in a penetrating mode and is provided with a threaded section, a transmission gear which is installed at the end portion of the screw rod and is positioned on the outer side of the first end plate or the second end plate, and two adjusting nuts which are movably installed at the threaded section and are provided with external teeth on the peripheral surface; the limiting assembly comprises two limiting switches which are arranged on the supporting plate at intervals and positioned on one side of the screw rod and limiting wheels which are arranged on each limiting switch and matched with the adjusting nuts; a nut rotation limiting assembly. The adjusting nut cannot rotate and only can move along the supporting plate to touch the limiting assembly, so that the reliability of the stroke limiter is improved.

Description

Stroke limiter for door rolling machine

Technical Field

The utility model belongs to the technical field of motor part, a rolling door machine is related to, concretely relates to stroke limiter for rolling door machine.

Background

The door roller is a device for providing power for the electric roller shutter. The electric roller shutter door machine uses a motor to drive a roller shutter central shaft to rotate, achieves a roller shutter switch, and automatically stops when the roller shutter door machine rotates to the upper limit and the lower limit set by the motor. The application number is 201620212811.2's chinese utility model patent discloses a rolling door machine stopper, including bottom plate, curb plate, lead screw and bearing frame, the curb plate is established in the bottom plate both sides, the lead screw is established on the bottom plate, the bearing frame is established in lead screw one end, the gear is installed to the lead screw other end, be provided with two round nuts on the lead screw, round nut and lead screw threaded connection, be provided with the gyro wheel on the round nut, the lead screw both sides are provided with travel switch, travel switch and bottom plate fixed connection, the last spacing wheel that is provided with of travel switch, spacing wheel is connected with the travel switch transmission, spacing wheel is corresponding the setting with the gyro wheel. Although the door roller is simple in structure, the round nut needs to be additionally provided with structures such as the roller and the like, so that the number of parts and the assembly process are increased; and the travel switch is usually arranged on two sides of the screw rod, so that the space on two sides of the screw rod is occupied, and subsequent structural optimization is difficult to perform.

Disclosure of Invention

The utility model aims at providing a stroke limiter for rolling door machine in order to solve the shortcoming that exists among the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a travel stop for a roller door machine, comprising:

a support assembly including a support plate, a first end plate formed at an end of the support plate and perpendicular thereto, and a second end plate formed at the other end of the support plate and perpendicular thereto;

the transmission assembly comprises a screw rod which is rotatably arranged in the first end plate and the second end plate in a penetrating mode and is provided with a threaded section, a transmission gear which is installed at the end portion of the screw rod and is positioned on the outer side of the first end plate or the second end plate, and two adjusting nuts which are movably installed at the threaded section and are provided with external teeth on the peripheral surface;

the limiting assembly comprises two limiting switches which are arranged on the supporting plate at intervals and positioned on one side of the screw rod and limiting wheels which are arranged on each limiting switch and matched with the adjusting nuts;

the nut rotates the restriction subassembly, the nut rotates restriction subassembly and installs just be located in the backup pad the opposite side of lead screw, it corresponds the card and goes into two in adjusting nut's the external tooth.

Preferably, the support assembly further comprises a plurality of connecting bolts which are arranged on the first end plate or the second end plate and are located on the same side as the transmission gear.

Preferably, the support assembly further comprises a projection formed on the support plate and located on one side of the screw rod, and the two limit switches are mounted on the projection.

Optimally, the nut rotation limiting assembly comprises a connecting plate and a limiting strip, wherein the connecting plate is arranged on the supporting plate and located on the other side of the screw rod, the limiting strip is formed on the inner side edge of the connecting plate and connected with the outer teeth of the adjusting nut in a clamping mode.

Further, the nut rotation limiting assembly further includes a plurality of first fasteners for mounting the connecting plate on the support plate and at least one second fastener mounted on the connecting plate.

Optimally, bayonets are arranged at the two side edges of the supporting plate.

Compared with the prior art, the beneficial effects of the utility model are that: the travel limiter for the rolling door machine of the utility model is matched with the support component, the transmission component, the limit component and the nut rotation limiting component which adopt specific structures, so that the limit switch can be arranged at the same side of the screw rod to save the space of the other side; and adjusting nut self can not rotate and only can follow the backup pad motion in order to touch spacing subassembly to improve the reliability of stroke stopper.

Drawings

Fig. 1 is a schematic structural view of the stroke limiter for a door roller of the present invention.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The travel limiter for the door roller as shown in fig. 1 mainly comprises a support assembly 1, a transmission assembly 2, a limiting assembly 3, a nut rotation limiting assembly 4 and the like.

Wherein, the supporting component 1 comprises a supporting plate 11, a first end plate 12 formed at the end of the supporting plate 11 and perpendicular thereto, and a second end plate 13 formed at the other end of the supporting plate 11 and perpendicular thereto (the supporting plate 11, the first end plate 12 and the second end plate 13 are usually integrally formed, and the first end plate 12 and the second end plate 13 are located at the same side of the supporting plate 11).

The transmission assembly 2 includes a screw 21 rotatably inserted into the first end plate 12 and the second end plate 13 and having a threaded section 211 (for example, a guide sleeve is embedded in the first end plate 12 and the second end plate 13, such that the screw 21 is inserted into the guide sleeve; a bearing may be further installed in the guide sleeve to further reduce friction), a transmission gear 22 installed at an end of the screw 21 and located outside the first end plate 12 or the second end plate 13 (in the present embodiment, the transmission gear 22 is located outside the first end plate 12), and two adjusting nuts 23 movably installed at the threaded section 211 and having external teeth on the peripheral surface (where, the movable means being linearly movable along the support plate 11).

The limiting assembly 3 comprises two limiting switches 31 which are arranged on the supporting plate 11 at intervals and positioned on one side of the screw rod 21, and a limiting wheel 32 which is arranged on each limiting switch 31 and matched with the adjusting nut 23; when the adjusting nut 23 moves to the limit wheel 32, the adjusting nut 23 presses the limit wheel 32 so that the limit switch 31 is turned off.

The nut rotation limiting assembly 4 is arranged on the support plate 11 and positioned on the other side of the screw rod 21, and is correspondingly clamped into the outer teeth of the two adjusting nuts 23; therefore, when the transmission gear 22 rotates under the action of external force, the screw rod 21 is synchronously driven to rotate, the two adjusting nuts 23 cannot rotate due to the limitation of the nut rotation limiting assembly 4, the two adjusting nuts 23 can only linearly move along the nut rotation limiting assembly 4 and the supporting plate 11, and accordingly the two limiting wheels 32 are correspondingly touched, and the stroke limiting effect is achieved.

In the present embodiment, the support assembly 1 further includes a plurality of connecting bolts 14 (specifically, mounted on the first end plate 12) mounted on the first end plate 12 or the second end plate 13 and on the same side as the transmission gear 22. The support assembly 1 further comprises a projection 111 formed on the support plate 11 and located at one side of the screw 21, and two limit switches (31) are mounted on the projection 111. The nut rotation limiting assembly 4 comprises a connecting plate 41 which is arranged on the supporting plate 11 and is positioned on the other side of the screw rod 21, and a limiting strip 42 which is formed on the inner side edge of the connecting plate 41 and is clamped with the outer teeth of the adjusting nut 23. The nut rotation limiting assembly 4 further includes a plurality of first fasteners 43 (typically, a gauge bolt, the same applies hereinafter) for mounting the connecting plate 41 to the support plate 11 and at least one second fastener 44 (for attachment to another component) mounted to the connecting plate 41. Bayonets 15 are arranged at the two side edges of the supporting plate 11 and used for clamping and mounting a cover cap of the stroke limiter.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a stroke stopper for rolling door machine which characterized in that, it includes:

a support assembly (1), the support assembly (1) comprising a support plate (11), a first end plate (12) formed at an end of the support plate (11) and perpendicular thereto, and a second end plate (13) formed at the other end of the support plate (11) and perpendicular thereto;

the transmission assembly (2) comprises a screw rod (21) which is rotatably arranged in the first end plate (12) and the second end plate (13) in a penetrating mode and is provided with a threaded section (211), a transmission gear (22) which is arranged at the end of the screw rod (21) and is positioned on the outer side of the first end plate (12) or the second end plate (13), and two adjusting nuts (23) which are movably arranged at the threaded section (211) and are provided with external teeth on the peripheral surface;

the limiting assembly (3) comprises two limiting switches (31) which are arranged on the supporting plate (11) at intervals and located on one side of the screw rod (21), and limiting wheels (32) which are arranged on each limiting switch (31) and matched with the adjusting nuts (23);

the nut rotates the restriction subassembly (4), nut rotation restriction subassembly (4) are installed just be located on backup pad (11) the opposite side of lead screw (21), it corresponds the card and goes into two in the external tooth of adjusting nut (23).

2. A travel stop for a rollup door machine according to claim 1 wherein: the supporting assembly (1) further comprises a plurality of connecting bolts (14) which are arranged on the first end plate (12) or the second end plate (13) and located on the same side with the transmission gear (22).

3. A travel stop for a rollup door machine according to claim 1 wherein: the supporting assembly (1) further comprises a protruding block (111) formed on the supporting plate (11) and located on one side of the screw rod (21), and the two limit switches (31) are mounted on the protruding block (111).

4. A travel stop for a rollup door machine according to claim 1 wherein: nut rotation restriction subassembly (4) are including installing on backup pad (11) and be located connecting plate (41) and the formation of lead screw (21) opposite side are in connecting plate (41) inboard on the limit and with spacing (42) of adjusting nut (23) external tooth joint.

5. A travel stop for a rollup door machine according to claim 4 wherein: the nut rotation limiting assembly (4) further comprises a plurality of first fasteners (43) for mounting the connecting plate (41) on the support plate (11) and at least one second fastener (44) mounted on the connecting plate (41).

6. A travel stop for a rollup door machine according to claim 1 wherein: bayonets (15) are arranged at the two side edges of the supporting plate (11).