Frictional balance wheel unit based on a tower spring

Abstract

The utility model relates to a kind of friction type balance wheel unit based on tower spring, belong to the technical field of express sorting equipment.It is supported to the support shaft of transmission drum by using step support pin, tower spring and shock-absorbing sleeve, to separate transmission drum support shaft and unit support between, and add elastic washer at transmission drum support shaft both ends, elastic washer close unit support reduction, reduce the vibration amplitude of transmission drum, to solve the problem of transmission drum position subsidence due to wear, finally make transmission drum and the two driven drums between balance wheel upper layer separate, transmission failure.

Description

Technical Field

[0001] This utility model relates to the field of express sorting equipment technology, and in particular to a friction-type balance wheel unit based on a tower-shaped spring. Background Technology

[0002] A swing wheel sorting machine is a type of guide wheel sorting equipment, mainly composed of a swing wheel unit, a servo swing module, and a frame. Based on instructions from the front-end information system, the servo swing module executes corresponding actions to rotate the swing wheel unit, completing the straight-line or left-right swing sorting action for packages.

[0003] In related technologies, the unit structure of the friction wheel sorting machine uses a mounting pin and spring structure at the mounting groove of the upper roller fixing rod to facilitate the quick installation and removal of the unit cover plate. Furthermore, by sliding the lifting rod up and down in the lifting hole and tightening the locking bolt, the installation height of the lifting rod and the cover plate can be adjusted. The protrusion height of the wheel can be adaptively adjusted according to the different thicknesses of the packages.

[0004] However, the fixing rod of the lower transmission roller in the above structure is in direct contact with the double-ear cover plate seat. During use, the roller fixing rod is constantly vibrating. After a period of use, the double-ear cover plate seat will be worn with a notch, causing the transmission roller to sink and separate from the driven roller, making it unable to drive the two upper driven rollers to rotate, which greatly reduces the sorting effect of the swing wheel sorter. Utility Model Content

[0005] In response to the shortcomings of the existing production technology, the applicant provides a friction-type balance wheel unit based on a tower-shaped spring, thereby solving the problem that wear causes the transmission roller to sink, eventually leading to the separation of the transmission roller from the two driven rollers on the upper layer of the balance wheel and transmission failure.

[0006] The technical solution adopted in this utility model is as follows: A friction-type balance wheel unit based on a tower-shaped spring includes a unit support, an active roller and a driven roller mounted on the upper layer of the unit support, and a transmission roller on the lower layer. The support shaft of the transmission roller has stepped surfaces at both ends, and elastic washers are provided between the stepped surfaces at both ends of the support shaft and the unit bracket. Through holes are made at both ends of the support shaft, and stepped support pins are arranged in the through holes; One end of the step support pin is fixed to the support shaft, and the other end passes through the tower-shaped spring and the shock-absorbing sleeve in sequence. The shock-absorbing sleeve is fixed to the bottom of the unit bracket; The support assembly is formed by the cooperation of a step support pin, a tower spring, and a shock-absorbing sleeve. The top of the tower spring is engaged with the step support pin, and the bottom is engaged with the shock-absorbing sleeve. The tower spring is a conical helical spring structure, and the diameter of the end engaged with the step support pin is smaller than that of the end engaged with the shock-absorbing sleeve. The support assembly supports the support shaft, creating a gap between the support shaft and the unit bracket.

[0007] As a further improvement to the above technical solution: Preferably, the upper layer of the unit support has three U-shaped grooves, with a driving roller installed in the middle U-shaped groove and driven rollers installed in the two side U-shaped grooves.

[0008] Preferably, one side of the drive roller abuts against the driving roller, and the other side abuts against the driven roller.

[0009] Preferably, when the driving roller rotates, it drives the transmission roller through friction. After being driven by the driving roller, the transmission roller drives the driven roller through friction at the contact end with the driven roller on the other side.

[0010] Preferably, the elastic washer is made of rubber, and the inner diameter of the elastic washer is smaller than the outer diameter of the step surface of the support shaft, so that there is an interference fit between the elastic washer and the step surface of the support shaft.

[0011] Preferably, the step support pin includes a short shaft end and a long shaft end, the short shaft end is inserted into the through hole at the end of the support shaft, and the long shaft end passes through the tower-shaped spring and is inserted into the shock-absorbing sleeve.

[0012] Preferably, the tower-shaped spring is a conical helical spring structure, with its large end diameter matching the outline dimensions of the shock-absorbing sleeve and its small end diameter matching the outer diameter of the long axis end of the stepped support pin.

[0013] Preferably, the top of the unit support is provided with a unit cover plate.

[0014] The beneficial effects of this utility model are as follows: This utility model has a compact structure. Through the coordinated action of stepped support pins, tower-shaped springs, and shock-absorbing sleeves, the support shaft is supported, creating a gap between the support shaft and the unit bracket. This avoids wear caused by direct contact between the support shaft and the unit bracket, fundamentally solving the transmission failure problem caused by the support shaft sinking after the unit bracket is worn out in the traditional technology. This utility model also has the following advantages: The shock-absorbing sleeve and elastic washer of this utility model work together. The elastic washer is located between the stepped surface of the support shaft and the unit bracket, and the elastic washer is located between the stepped support pin and the unit bracket. Both play a role in further shock absorption. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the diagram.

[0017] Figure 3 for Figure 1 A structural diagram in the front view.

[0018] Figure 4 This is a schematic diagram of the unit support structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the step support pin structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the tower-shaped spring of this utility model.

[0021] Figure 7 This is a schematic diagram of the shock-absorbing pin structure of this utility model.

[0022] In the diagram: 1. Unit bracket; 2. Unit cover plate; 3. Driving roller; 4. Driven roller; 5. Transmission roller; 6. Transmission roller support shaft; 7. Elastic washer; 8. Step support pin; 9. Tower spring; 10. Shock absorber sleeve. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0024] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0027] It should be understood that although the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0028] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0029] like Figures 1-7 The accompanying drawing shows a schematic diagram of the structure of a friction balance wheel unit based on a tower-shaped spring in one embodiment of the present invention; for ease of description, the drawing only shows the structure related to the embodiment of the present invention.

[0030] This application provides a friction-type balance wheel unit based on a tower spring, including a unit support 1, a unit cover plate 2, a driving roller 3, a driven roller 4, and a transmission roller 5; Please see Figures 1-4 The unit support 1 has a unit cover plate 2 installed on top, and three U-shaped grooves are opened on the upper layer of the unit support 1. The middle U-shaped groove is used to install the driving roller 3, and the two side U-shaped grooves are used to install the driven roller 4. The drive roller 5 is located on the lower layer of the unit support 1. One side of the drive roller 5 abuts against the driving roller 3, and the other side abuts against the driven roller 4, forming a friction drive.

[0031] In some embodiments, the drive roller support shaft 6 has stepped surfaces at both ends, and rubber elastic washers 7 are provided between the stepped surfaces and the unit bracket 1. Furthermore, the inner circle dimension of the elastic washer 7 is smaller than the outer diameter of the stepped surface, forming an interference fit; Furthermore, the elastic washer 7 is compressed and filled between the stepped surface of the drive roller support shaft 6 and the unit bracket 1.

[0032] In some embodiments, a through hole is provided at the end of the drive roller support shaft 6, the short shaft end of the stepped support pin 8 is inserted into the through hole, and the long shaft end of the stepped support pin 8 passes through the tower spring 9 and the shock absorber sleeve 10 in sequence. The shock-absorbing sleeve 10 is fixed to the bottom of the unit bracket 1 and matches the large end of the tower spring 9; the small end of the tower spring 9 matches the outer diameter of the long shaft end of the stepped support pin 8.

[0033] In some embodiments, the step support pin 8, the tower spring 9, and the shock absorber sleeve 10 work together to form a suspension support assembly, so that a gap is maintained between the transmission roller support shaft 6 and the unit bracket 1 to avoid direct contact and wear; specifically, the top of the tower spring 9 cooperates with the step support pin 8, and the bottom cooperates with the shock absorber sleeve 10, and the tower spring 9 is a conical helical spring structure, with the diameter of the end that cooperates with the step support pin 8 being smaller than the diameter of the other end that cooperates with the shock absorber sleeve 10; In actual operation, the driving roller 3 is driven to rotate by external force, which drives the transmission roller 5 to rotate through friction; the transmission roller 5 drives the driven rollers 4 on both sides through friction on the other side.

[0034] In some embodiments, the elastic washer 7 absorbs the vibration of the drive roller support shaft 6 caused by the high-speed rotation of the drive roller 5, the tower spring 9 buffers the radial vibration through the conical spiral structure, and the shock-absorbing sleeve 10 further dissipates the vibration energy. The three work together to reduce the amplitude of the drive roller 5.

[0035] Combination Figure 5 As shown, in some embodiments, the short shaft end of the step support pin 8 is interference-fitted with the transmission roller support shaft 6, and the long shaft end passes through the tower spring 9 and is clearance-fitted with the shock absorber sleeve 10.

[0036] Combination Figures 6-7 As shown, in some embodiments, the tower spring 9 adopts a conical spiral structure, with the large end abutting against the shock-absorbing sleeve 10 and the small end sleeved on the long shaft end of the step support pin 8.

[0037] In summary, this utility model uses the support pin 8, the tower spring 9, and the shock-absorbing sleeve 10 to form a suspended support assembly, which separates the transmission roller support shaft 6 from the unit bracket 1. This fundamentally avoids wear caused by direct contact between the transmission roller support shaft 6 and the unit bracket 1, solves the problem of transmission failure caused by the position of the transmission roller support shaft 6 sinking after the unit bracket 1 is worn into a notch, and extends the service life of the equipment.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A friction-type balance wheel unit based on a tower-shaped spring, characterized in that, It includes a unit support (1), an active roller (3) and a driven roller (4) installed on the upper layer of the unit support (1), and a transmission roller (5) on the lower layer; The support shaft (6) of the transmission roller (5) has stepped surfaces at both ends, and elastic washers (7) are provided between the stepped surfaces at both ends of the support shaft (6) and the unit bracket (1). Through holes are opened at both ends of the support shaft (6), and stepped support pins (8) are arranged in the through holes. One end of the step support pin (8) is fixed to the support shaft (6), and the other end passes through the tower spring (9) and the shock absorber sleeve (10) in sequence. The shock-absorbing sleeve (10) is fixed to the bottom of the unit bracket (1); The support assembly is formed by the combination of step support pin (8), tower spring (9) and shock absorber sleeve (10); The top of the tower-shaped spring (9) is engaged with the step support pin (8), and the bottom is engaged with the shock-absorbing sleeve (10). The tower-shaped spring (9) is a conical helical spring structure, and the diameter of the end engaged with the step support pin (8) is smaller than that of the other end engaged with the shock-absorbing sleeve (10). The support assembly supports the support shaft (6) so that there is a gap between the support shaft (6) and the unit bracket (1).

2. The friction balance wheel unit based on a tower-shaped spring according to claim 1, characterized in that, The upper layer of the unit support (1) has three U-shaped grooves, with the driving roller (3) installed in the middle U-shaped groove and the driven rollers (4) installed in the U-shaped grooves on both sides.

3. The friction balance wheel unit based on a tower-shaped spring according to claim 2, characterized in that, The drive roller (5) abuts against the driving roller (3) on one side and against the driven roller (4) on the other side.

4. The friction balance wheel unit based on a tower-shaped spring according to claim 3, characterized in that, When the active roller (3) rotates, it drives the transmission roller (5) through friction. After the transmission roller (5) is driven by the active roller (3), it drives the driven roller (4) through friction at the contact end with the driven roller (4) on the other side.

5. The friction balance wheel unit based on a tower-shaped spring according to claim 1, characterized in that, The elastic washer (7) is made of rubber, and the inner circle size of the elastic washer (7) is smaller than the outer diameter of the step surface of the support shaft (6), so that the elastic washer (7) and the step surface of the support shaft (6) are interference fit.

6. The friction balance wheel unit based on a tower-shaped spring according to claim 1, characterized in that, The step support pin (8) includes a short shaft end and a long shaft end. The short shaft end is inserted into the through hole at the end of the support shaft (6), and the long shaft end passes through the tower spring (9) and is inserted into the shock absorber sleeve (10).

7. The friction balance wheel unit based on a tower-shaped spring according to claim 1, characterized in that, The top of the unit support (1) is provided with a unit cover plate (2).

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