Synchronous belt type flexible track telescoping mechanism

Abstract

The utility model belongs to the technical field of loading platforms, and particularly relates to a synchronous belt type flexible track telescopic mechanism which comprises a track and a telescopic mechanism body, the track is used for stretching into a carriage to convey materials borne by the track into the carriage, and the telescopic mechanism body is used for driving the track to stretch into or retreat from the carriage. The driving belt wheel is connected with the output end of the rotating driving mechanism, the two driven belt wheels are distributed on the two sides of the driving belt wheel, the synchronous belt is arranged on the driving belt wheel and the driven belt wheels in a winding mode, the synchronous belt extends in the length direction of the track, and the front end of the synchronous belt is fixed to the front end of the track. The rear end of the synchronous belt is fixed with the rear end of the track; the two ends of the synchronous belt are connected with the two ends of the track to drive the track to extend forwards or retract backwards, the movement stroke of the track is determined by the length of the synchronous belt, the overall structure is simple, operation is convenient, high-precision requirements do not exist, and therefore cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of loading platforms, and particularly relates to a synchronous belt type flexible track telescopic mechanism. Background Art

[0002] A loading platform usually includes a track for carrying materials and a pusher mechanism for pushing the materials on the track into the carriage. Generally, the carriage is relatively long, so the track needs to extend into the carriage. Moreover, different carriages have different sizes and different lengths that the track needs to extend. Therefore, the track is usually designed to be telescopic to meet the loading of long carriages. In the prior art, the cooperation of a gear and a rack is usually adopted to realize the telescoping of the track. However, the gear meshing structure has high precision requirements, and it is difficult to ensure both the processing difficulty and precision brought by the long processing length of the rack, resulting in a high cost. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: to solve the problem that in the prior art, the cooperation of a gear and a rack is usually adopted to realize the telescoping of the track. However, the gear meshing structure has high precision requirements, and it is difficult to ensure both the processing difficulty and precision brought by the long processing length of the rack, resulting in a high cost. Now, a synchronous belt type flexible track telescopic mechanism is provided.

[0004] The technical solution adopted by the utility model to solve its technical problem is: a synchronous belt type flexible track telescopic mechanism, including:

[0005] A track for extending into the carriage to convey the materials carried thereon into the carriage;

[0006] And a telescopic mechanism for driving the track to extend into or withdraw from the carriage, which includes a rotary drive mechanism, a drive pulley connected to the output end of the rotary drive mechanism, two driven pulleys distributed on both sides of the drive pulley, and a synchronous belt wound around the drive pulley and the driven pulleys. The synchronous belt extends along the length direction of the track, and its front end is fixed to the front end of the track, and the rear end of the synchronous belt is fixed to the rear end of the track.

[0007] Further, a plurality of traveling rollers are arranged at intervals inside the track.

[0008] Further, a secondary support frame is provided at the rear end of the track, and a plurality of secondary support rollers for contacting the outside of the track are arranged at intervals on the secondary support frame.

[0009] Further, the track includes two oppositely arranged single rails, and a plurality of reinforcing bars are arranged at intervals along the length direction between the two single rails.

[0010] Further, clamping blocks for clamping the synchronous belt are arranged on the reinforcing bars.

[0011] Further, the telescopic mechanism further includes a fixed seat. The base of the rotary drive mechanism is installed on one side of the fixed seat. On the other side of the fixed seat, there is an installation box for installing the driving pulley and the driven pulley. The two sides of the installation box along the length direction of the synchronous belt have depressions for guiding the synchronous belt.

[0012] The beneficial effects of the present utility model are as follows: The present utility model drives the track to extend forward or retract backward by connecting the two ends of the synchronous belt to the two ends of the track. The movement stroke of the track is determined by the length of the synchronous belt. The overall structure is simple, the operation is convenient, and there is no high-precision requirement, thus saving costs.

[0013] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. Description of the Drawings

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0015] Figure 1 is a schematic structural diagram of the first perspective of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the second perspective of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the telescopic mechanism;

[0018] Figure 4 is a schematic structural diagram of the telescopic mechanism with the installation box removed;

[0019] In the figure:

[0020] 1. Track; 101. Single track; 102. Reinforcing rod; 103. Clamping block;

[0021] 2. Telescopic mechanism; 201. Rotary drive mechanism; 202. Driving pulley; 203. Driven pulley; 204. Synchronous belt; 205. Fixed seat; 206. Installation box; 2061. Depression;

[0022] 3. Auxiliary support frame;

[0023] 4. Traveling roller;

[0024] 5. Auxiliary support roller. Detailed Embodiments

[0025] The present utility model will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only schematically showing the basic structure of the present utility model. Therefore, they only show the components related to the present utility model. Directions and references (such as up, down, left, right, etc.) can only be used to assist in the description of the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0026] As Figures 1-4 shown, a synchronous belt type flexible track telescopic mechanism includes a track 1 and a telescopic mechanism 2:

[0027] The track 1 is used to extend into the carriage to convey the materials it carries into the carriage;

[0028] The telescopic mechanism 2 is used to drive the track 1 to extend into or retract from the carriage. It is located in the middle of the track 1 and includes a rotary drive mechanism 201, a drive pulley 202 connected to the output end of the rotary drive mechanism 201, two driven pulleys 203 distributed on both sides of the drive pulley 202, and a synchronous belt 204 wound around the drive pulley 202 and the driven pulleys 203. The rotary drive mechanism 201 is a servo motor. The synchronous belt 204 extends along the length direction of the track 1, and its front end is fixed to the front end of the track 1, and the rear end of the synchronous belt 204 is fixed to the rear end of the track 1. The length of the synchronous belt 204 determines the movement stroke of the track 1.

[0029] When it is necessary to extend into the carriage to load goods, the servo motor starts to drive the drive pulley 202 to rotate counterclockwise ( Figure 4 ), the synchronous belt 204 at the front end of the drive pulley 202 extends, and the synchronous belt 204 at the rear end of the drive pulley 202 shortens, thereby driving the track 1 to extend forward;

[0030] When the loading is completed and it is necessary to retract from the carriage, the servo motor drives the drive pulley 202 to rotate clockwise ( Figure 4 ), the synchronous belt 204 at the front end of the drive pulley 202 shortens, and the synchronous belt 204 at the rear end of the drive pulley 202 elongates, thereby driving the track 1 to retract backward.

[0031] In some examples, a plurality of traveling rollers 4 are arranged at intervals on the inner side of the track 1. When the synchronous belt 204 drives the track 1 to extend forward or retract backward, the rolling of the traveling rollers 4 can convert the sliding friction between the track 1 and the base into rolling friction, thereby reducing the friction between the two and making the movement of the track 1 smooth.

[0032] In some examples, a secondary support frame 3 is provided at the rear end of the track 1, and a plurality of secondary support rollers 5 for contacting the outside of the track 1 are arranged at intervals on the secondary support frame 3. The secondary support rollers 5 sandwich the track 1 in the middle. On the one hand, the movement of the track 1 can be guided, and on the other hand, the sliding friction between the secondary support frame 3 and the track 1 can be converted into rolling friction, thereby reducing the friction force between the two and making the movement of the track 1 smooth.

[0033] In some examples, the track 1 includes two relatively arranged single rails 101, and a plurality of reinforcing rods 102 are arranged at intervals along the length direction between the two single rails 101, thereby improving the structural strength of the track 1.

[0034] In some examples, a clamping block 103 for clamping the synchronous belt 204 is provided on the reinforcing rod 102. After the synchronous belt 204 is clamped by the clamping block 103, the track 1 can move forward and backward under the action of the synchronous belt 204.

[0035] In some examples, the telescopic mechanism 2 further includes a fixed seat 205. The base of the rotary drive mechanism 201 is installed on one side of the fixed seat 205. On the other side of the fixed seat 205, an installation box 206 for installing the drive pulley 202 and the driven pulley 203 is provided. The output end of the rotary drive mechanism 201 extends into the installation box 206 and is connected to the drive pulley 202. The top of the installation box 206 is open for the synchronous belt 204 to extend, and both sides of the installation box 206 along the length direction of the synchronous belt 204 have depressions 2061 for guiding the synchronous belt 204.

[0036] Working principle:

[0037] When it is necessary to extend into the carriage for loading, the servo motor starts to drive the drive pulley 202 to rotate counterclockwise ( Figure 4 ), the synchronous belt 204 at the front end of the drive pulley 202 extends, and the synchronous belt 204 at the rear end of the drive pulley 202 shortens, thereby driving the track 1 to extend forward. During the extension of the track 1, it is assisted by the traveling rollers 4 and the secondary support rollers 5;

[0038] When the loading is completed and it is necessary to withdraw from the carriage, the servo motor drives the drive pulley 202 to rotate clockwise ( Figure 4 ), the synchronous belt 204 at the front end of the drive pulley 202 shortens, and the synchronous belt 204 at the rear end of the drive pulley 202 elongates, thereby driving the track 1 to retract backward. During the retraction of the track 1, it is assisted by the traveling rollers 4 and the secondary support rollers 5.

[0039] Based on the inspiration of the ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A synchronous belt type flexible track telescopic mechanism, characterized in that: The track (1) is used to extend into the carriage to transport the material carried by the track into the carriage; and a telescopic mechanism (2) for driving a track (1) to extend into or out of a carriage, comprising a rotary drive mechanism (201), a driving pulley (202) connected to an output end of the rotary drive mechanism (201), two driven pulleys (203) distributed on both sides of the driving pulley (202), and a synchronous belt (204) wound around the driving pulley (202) and the driven pulley (203), wherein the synchronous belt (204) extends along the length direction of the track (1) and its front end is fixed to the front end of the track (1), and the rear end of the synchronous belt (204) is fixed to the rear end of the track (1).

2. A synchronous belt type flexible track telescopic mechanism according to claim 1, characterized in that: A plurality of travel rollers (4) are arranged at intervals on the inner side of the track (1).

3. The synchronous belt type flexible track telescopic mechanism according to claim 1, characterized in that: An auxiliary support frame (3) is provided at the rear end of the track (1), and a plurality of auxiliary support rollers (5) for contacting the outer side of the track (1) are arranged at intervals on the auxiliary support frame (3).

4. The synchronous belt type flexible track telescopic mechanism according to claim 1, characterized in that: The track (1) comprises two monorails (101) arranged opposite to each other, and a plurality of reinforcing rods (102) are arranged at intervals along the length direction between the two monorails (101).

5. A synchronous belt type flexible track telescopic mechanism according to claim 4, characterized in that: The reinforcing rod (102) is provided with a clamping block (103) for clamping the synchronous belt (204).

6. The synchronous belt type flexible track telescopic mechanism according to claim 1, characterized in that: The telescopic mechanism (2) further comprises a fixed seat (205), the base of the rotary drive mechanism (201) is mounted on one side of the fixed seat (205), and the other side of the fixed seat (205) is provided with a mounting box (206) for mounting a driving pulley (202) and a driven pulley (203), and the mounting box (206) has recesses (2061) for guiding the synchronous belt (204) on both sides along the length direction of the synchronous belt (204).

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