Spring tensioning mechanism for RLZA series

Abstract

The spring tensioning mechanism comprises an outer shell, a limiting sliding rod is inserted into one end of the outer shell, a fixing base is fixedly connected to the top end of the outer shell, an opening is formed in one end of the fixing base, a supporting rod is rotationally connected to the inner side of the fixing base, torsion springs are arranged on shafts on the two sides of the supporting rod in a sleeved mode, and the torsion springs are connected with the limiting sliding rod in a sleeved mode. An opening is formed in the top of the outer shell, a pulley is arranged at the top of the opening, the diameter of the pulley is larger than the width of the opening, the outer wall of the limiting sliding rod is sleeved with a tensioning spring, one end of the tensioning spring and one end of the limiting sliding rod are connected with a sliding block, the sliding block is slidably connected with the outer shell, and a connecting rod is inserted into the top of the outer shell. The outer wall of the connecting rod is rotatably connected with a pulley, one end of the connecting rod penetrates through the outer shell to be connected with the sliding block, and one end of the pulley is provided with a roller. According to the device, the stability and supporting performance of the pulley can be improved, and the pulley is prevented from being pressed and damaged while the stability of the pulley in the using process is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring tensioner technical field, concretely is a kind of spring tensioning mechanism for RLZA series. BACKGROUND

[0002] Spring tensioner is a kind of common mechanical device, is widely used in the occasion needing to maintain proper tension, such as belt drive system, chain drive system and other devices involving flexible or semi-flexible components.

[0003] Spring tensioner is mainly composed of spring, pulley and bracket structure combination, the current spring tensioner is mainly realized by the force of spring to tension, and there is unstable phenomenon in the expansion and contraction process of spring, which easily leads to pulley shaking, affects the tensioning effect, thus needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of spring tensioning mechanism for RLZA series to solve the problem of pulley instability in the use process of spring tensioner proposed in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of spring tensioning mechanism for RLZA series, including shell body, the shell body one end is inserted into limiting slide rod, limiting slide rod's outer wall is equipped with tension spring, tension spring and the one end of limiting slide rod are connected with sliding block, sliding block is slidably connected with shell body, shell body top is inserted into connecting rod, connecting rod outer wall is rotatably connected with pulley, the one end of connecting rod is connected with sliding block by penetrating shell body, and the one end of pulley is provided with gyro wheel.

[0006] Preferably, the top of the shell body is provided with an opening, and the pulley is arranged on the top of the opening, and the diameter of the pulley is greater than the width of the opening.

[0007] Preferably, the top of the shell body is fixedly connected with a fixed seat, and the one end of the fixed seat is provided with an opening, and the inner side of the fixed seat is rotatably connected with a supporting rod.

[0008] Preferably, torsion springs are sleeved on the shafts on the two sides of the supporting rod, and the one end of the supporting rod is rotatably connected with a mounting seat, and the inner side of the mounting seat is rotatably connected with a gyro wheel.

[0009] Preferably, a sliding groove is arranged on the inner side of the shell body, and a sliding block is inserted into the sliding groove, and the sliding block is threadedly connected with the limiting slide rod and the connecting rod.

[0010] Preferably, a bearing is mounted on the outer wall of the connecting rod, and the outer wall of the bearing is connected with the pulley.

[0011] Preferably, fixed blocks are integrally connected on the two sides of the shell body, and the limiting slide rod and the shell body form a sliding connection.

[0012] Compared with the prior art, the utility model has the advantages of:

[0013] (1), this device can improve the stability and support performance of the pulley, avoid the pulley damage under pressure while ensuring the stability in the use process of the pulley.

[0014] (2), this device is inserted in the outer shell one end limit slip rod, limit slip rod and outer shell sliding connection, through the tension spring is set to limit slip rod outer wall, make the tension spring and limit slip rod one end and slide block connection, slide block is located in the inner side of the outer shell, through the pulley and slide block top connection, thereby the slide block stable movement can improve the stability of the pulley, ensure the effect of tension.

[0015] (3), this device is provided with mounting seat in one end of the pulley, the inner side of mounting seat rotatable connecting roller, mounting seat lower end rotatable connecting support rod, connecting roller is supported on the outer wall of the pulley, not only can ensure the rotation of the pulley, also can be in the pulley front end and the belt contact tensioning pulley upper end stress after the roller can play a supporting role, thereby avoid the uneven stress of the pulley and damage phenomenon appears. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a spring tensioning mechanism structure schematic view for RLZA series of the utility model;

[0017] Fig. 2 It is a bottom view of a spring tensioning mechanism for RLZA series of the utility model;

[0018] Fig. 3 It is a side view of a spring tensioning mechanism for RLZA series of the utility model.

[0019] In the drawing: 1, tension spring;2, limit slip rod;3, outer shell;4, slide block;5, fixed block;6, pulley;7, connecting rod;8, bearing;9, fixed seat;10, support rod;11, torsion spring;12, mounting seat;13, roller. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] Please refer to Figs. 1-3The utility model provides a technical scheme: a spring tensioning mechanism for RLZA series, including outer shell 3, the one end of outer shell 3 is inserted in the limiting slide rod 2, the top of outer shell 3 is equipped with the opening, the top of opening is provided with pulley 6, and the diameter of pulley 6 is greater than the width of opening, and the pulley 6 of this structure can stably slide on the top of outer shell 3, and the top of outer shell 3 is fixedly connected with fixed seat 9, and the one end of fixed seat 9 is equipped with the opening, and the inner side of fixed seat 9 is rotatably connected with support rod 10, and the shaft of the both sides of support rod 10 is equipped with torsion spring 11, and one end of support rod 10 is rotatably connected with mounting seat 12, and the inner side of mounting seat 12 is rotatably connected with gyro wheel 13, and this structure can make gyro wheel 13 on the top of support rod 10 closely adhere to the outer wall of pulley 6 by setting torsion spring 11, and the effect of supporting the upper end of pulley 6 is played, and the phenomenon of uneven force of pulley 6 is avoided, and the rear end of mounting seat 12 of this structure is connected with the upper end of support rod 10 through the pivot and can be adjusted in angle, and the angle of support rod 10 and mounting seat 12 can also be locked by bolt, and the inner side of outer shell 3 is provided with sliding slot, and sliding block 4 is inserted in the inside of sliding slot, and sliding block 4, limiting slide rod 2 and connecting rod 7 are all screw connections, and this structure is connected with the one end of limiting slide rod 2 by setting sliding block 4, and connecting rod 7 is screw connected with sliding block 4 at lower end, and the accessory is convenient to disassemble and replace, and bearing 8 is installed on the outer wall of connecting rod 7, and the outer wall of bearing 8 is connected with pulley 6, and this structure can not affect the rotation of belt when pulley 6 is in contact with belt and is tensioned, and the both sides of outer shell 3 are integrally connected with fixed block 5, and fixed block 5 can be fixed in working area by bolt, and limiting slide rod 2 and outer shell 3 constitute sliding connection, and this structure is not only slid by cooperating with the expansion of tension spring 1, but also plays the role of left and right limiting of tension spring 1, and avoids the bending or excessive inclination of tension spring 1, and the outer wall of limiting slide rod 2 is equipped with tension spring 1, and one end of tension spring 1 and limiting slide rod 2 is connected with sliding block 4, and sliding block 4 is slidably connected with outer shell 3, and connecting rod 7 is inserted in the top of outer shell 3, and pulley 6 is rotatably connected with the outer wall of connecting rod 7, and one end of connecting rod 7 penetrates outer shell 3 and is connected with sliding block 4, and one end of pulley 6 is provided with gyro wheel 13.

[0022] Working principle: when the spring tensioning mechanism for RLZA series is used, first, fixed block 5 and outer shell 3 are fixed in the area needing work by bolt, sliding block 4 moves to the front end under the support of tension spring 1, pulley 6 closely adheres to the outer wall of belt, and at the same time, support rod 10 inclines to the end of pulley 6 under the action of torsion spring 11, then the angle of mounting seat 12 is adjusted, gyro wheel 13 in the inner side of mounting seat 12 can closely adhere to the outer wall of pulley 6 and support the upper end of pulley 6, and the uniformity of force of pulley 6 is guaranteed.

[0023] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A spring tensioning mechanism for the RLZA series, comprising an outer housing (3), characterized in that: The outer shell (3) one end is inserted into the limiting slide rod (2), the outer wall of the limiting slide rod (2) is sleeved with the tension spring (1), the tension spring (1) and one end of the limiting slide rod (2) are connected with the sliding block (4), the sliding block (4) is connected with the outer shell (3) in sliding mode, the connecting rod (7) is inserted into the outer shell (3) on the top, the connecting rod (7) is rotatably connected with the pulley (6) on the outer wall, one end of the connecting rod (7) penetrates the outer shell (3) and is connected with the sliding block (4), one end of the pulley (6) is provided with the roller (13).

2. A spring tensioning mechanism for the RLZA series as claimed in claim 1, characterized in that: The outer shell (3) is provided with an opening on the top, the opening is provided with a pulley (6) on the top, and the diameter of the pulley (6) is greater than the width of the opening.

3. A spring tensioning mechanism for the RLZA series as claimed in claim 1, characterized in that: The outer shell (3) is fixedly connected with the fixed seat (9) on the top, the fixed seat (9) is provided with an opening on one end, and the fixed seat (9) is rotatably connected with the supporting rod (10) on the inner side.

4. A spring tensioning mechanism for the RLZA series as claimed in claim 3, characterized in that: The torsion spring (11) is sleeved on the shaft of the supporting rod (10) on both sides, the mounting seat (12) is rotatably connected with the roller (13) on one end of the supporting rod (10).

5. A spring tensioning mechanism for the RLZA series as claimed in claim 1, characterized in that: The inner side of the outer shell (3) is provided with a sliding groove, the sliding groove is inserted into the sliding block (4), and the sliding block (4) is connected with the limiting slide rod (2) and the connecting rod (7) in screw mode.

6. A spring tensioning mechanism for the RLZA series as claimed in claim 1, characterized in that: The connecting rod (7) is provided with the bearing (8) on the outer wall, and the outer wall of the bearing (8) is connected with the pulley (6).

7. A spring tensioning mechanism for the RLZA series as claimed in claim 1, characterized in that: The outer shell (3) is integrally connected with the fixed block (5) on both sides, and the limiting slide rod (2) and the outer shell (3) are connected in sliding mode.

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