A kind of non-powered roller machine with damping and its using method

Abstract

The present invention relates to the technical field of logistics equipment, and specifically to a damped unpowered roller machine and a method for using the same. A damped unpowered roller machine comprises a frame and a downward conveying line installed on the frame; the downward conveying line comprises an elastic belt damping roller group; the elastic belt damping roller group comprises an elastic belt; and two damping rollers are used to install the elastic belt and make the elastic belt rotate at a uniform speed. The damped unpowered roller machine of the present application can decelerate the goods to the required speed through the elastic belt damping roller group on a downward conveying line with a short distance and a large inclination angle, so that the goods can be smoothly transported downward to avoid collision or overturning of the goods. The setting method of the elastic belt damping roller group has the advantages of low cost and convenient disassembly and assembly.

Description

Technical Field

[0001] The invention relates to the technical field of logistics equipment, in particular to a damping unpowered roller machine and a use method thereof. Background Art

[0002] With the further development of logistics industry and industry, more and more logistics conveyor lines are developing in the direction of intelligence and three-dimensionalization. Among them, the unpowered roller conveyor does not require power and has a simple structure, so it is widely used in short-distance sliding conveyor lines. Ordinary sliding paths are usually equipped with damping rollers or belts for braking, but the existing damping roller or belt deceleration and braking methods are only suitable for conveyor lines with small inclinations (generally less than 5 degrees). When the conveyor line angle is large, the simple damping roller or belt deceleration and braking method can no longer achieve the deceleration effect, and may even cause cargo collision or rollover.

[0003] The utility model with application number CN201921932321.X discloses a downhill damping roller conveyor, including a conveyor frame, wherein a conveying section, a centering section and a docking section are sequentially arranged from upstream to downstream of the conveyor frame, wherein the conveying section includes a plurality of first conveying rollers, wherein the first conveying rollers are provided with a driving mechanism for driving the first conveying rollers to rotate, and the centering section includes two rows of second conveying rollers arranged in a herringbone shape, and the docking section includes a plurality of third conveying rollers. The conveyor of this structure can transport goods from high to low and at a constant speed to other workstations through the conveying section, the centering section and the docking section, so as to prevent the goods from colliding and rolling due to excessive speed. However, the conveyor of this structure needs to be provided with an external power source, which is relatively costly, and needs to be provided with three conveying sections, and the disassembly and assembly operations are relatively complicated.

[0004] In order to reduce costs and simplify installation steps, it is still necessary to consider achieving deceleration without adding external power. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a damping unpowered roller machine which is easy to install and has low cost and a use method thereof.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a damping unpowered roller machine, comprising a frame and a downward conveying line installed on the frame; the downward conveying line comprises an elastic belt damping roller group;

[0007] The elastic belt damping roller set comprises

[0008] Elastic band;

[0009] The damping rollers, two in number, are used to mount the elastic belt and allow the elastic belt to move at a speed of Rotate at a constant speed.

[0010] The damped unpowered roller conveyor of the present application can decelerate the goods to the required speed through an elastic belt damping roller group on a short-distance and large-inclination downward conveyor line, so that the goods can be smoothly conveyed downward to avoid collision or rollover of the goods. The setting method of the elastic belt damping roller group has the advantages of low cost and convenient disassembly and assembly.

[0011] Preferably, the elastic belt damping roller set also includes

[0012] The first unpowered roller is arranged between the two damping rollers and is used for supporting the elastic belt.

[0013] Preferably, the number of the unpowered rollers is 2-4.

[0014] Preferably, the downward conveying line further includes

[0015] The unpowered roller group is arranged adjacent to the elastic belt damping roller group and includes a plurality of unpowered rollers 2.

[0016] Preferably, a silicone layer is provided on the outer peripheral side of the second unpowered roller.

[0017] Preferably, the sum of the lengths of the pre-set elastic belt damping roller groups of the downward conveying line is L, where L is obtained by the following formula:

[0018] (1);

[0019] (2);

[0020] (3);

[0021] (4);

[0022] (5);

[0023] Where W is the weight of the cargo, is the inclination angle of the downward conveyor line, is the friction coefficient between the cargo and the elastic band, is the rotation speed of the elastic band, It is the initial speed of the goods entering the downward conveying line.

[0024] Preferably, the inclination angle of the downward conveying line is Need to meet , is the friction coefficient between the cargo and the elastic band.

[0025] Preferably, the speed ratio of the inner and outer rollers of the damping roller is I, where I is obtained by the following formula:

[0026] (6);

[0027] (7);

[0028] (8);

[0029] (9);

[0030] (10);

[0031] (11);

[0032] (12);

[0033] (13);

[0034] (14);

[0035] Where W is the weight of the cargo, is the inclination angle of the downward conveyor line, is the rolling friction coefficient between the goods and the damping roller, R1 is the radius of the inner roller, R2 is the radius of the outer roller, , , are all independent values, which are the best positions to be selected when designing the damping roller. f1 is the friction coefficient between the friction plate and the inner wall of the roller, and m is the mass of the pendulum block. are the structural parameters of the roller, D is the diameter of the outer roller, n1 is the speed of the outer roller, and n2 is the speed of the inner roller.

[0036] A method for using a damping unpowered roller machine, comprising the following steps

[0037] S1 is based on the weight of the goods and the inclination angle of the downward conveyor line. and the required elastic band rotation speed Obtain the required inner and outer roller speed ratio I of the damping roller, and select a damping roller whose gear transmission mechanism meets the use requirements according to the inner and outer roller speed ratio I;

[0038] S2 is based on the weight of the goods and the inclination angle of the downward conveyor line. , the required elastic band rotation speed and the initial speed of the cargo entering the descending conveyor line Obtaining the total length of the preset elastic belt damping roller set;

[0039] S3 determines the number of elastic belt damping roller groups and the length of each elastic belt damping roller group according to the total length of the preset elastic belt damping roller group;

[0040] S4 installs the elastic belt damping roller set and the frame.

[0041] Preferably, in said S3, when the required length of the downward conveying line is greater than the total length of the preset elastic belt damping roller group, it is also necessary to determine the number and setting position of the required unpowered roller group;

[0042] The step S4 also includes installing the required unpowered roller group and the frame.

[0043] Beneficial Effects

[0044] The damped unpowered roller conveyor of the present application can decelerate the goods to the required speed through an elastic belt damping roller group on a short-distance and large-inclination downward conveyor line, so that the goods can be smoothly conveyed downward to avoid collision or rollover of the goods. The setting method of the elastic belt damping roller group has the advantages of low cost and convenient disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the structure of the damping unpowered roller machine of this application;

[0046] Figure 2 for Figure 1 Side view of the middle belt damping unpowered roller machine;

[0047] Figure 3 for Figure 1 Top view of the medium-belt damping unpowered roller conveyor. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0049] like Figures 1 to 3 As shown, a damping unpowered roller machine includes a frame 1 and a descending conveyor line installed on the frame 1, and the length of the descending conveyor line is within 3 meters.

[0050] The downward conveying line includes an elastic belt damping roller group, and the elastic belt damping roller group includes an elastic belt 2 and a damping roller 3. The number of damping rollers 3 is two, which are used to install the elastic belt 2 and make the elastic belt 2 move at a speed of Rotate at a constant speed. The expected running speed of the down-going conveyor line is generally 5-10 m / min. 6 m / min.

[0051] The elastic belt damping roller set also includes a non-powered roller 4 disposed between the two damping rollers 3. The non-powered roller 4 is used to support the elastic belt 2, and the length of the elastic belt damping roller set can be changed by changing the number of non-powered rollers 4. The number of non-powered rollers 4 in the elastic belt damping roller set is generally 2-4, for example, the number of non-powered rollers 4 can be 3, and the elastic belt damping roller set with this number has the best use effect, the lowest cost, and the highest installation convenience.

[0052] The sum of the lengths of the pre-set elastic belt damping roller groups of the downward conveying line is L, where L is obtained by the following formula:

[0053] (1);

[0054] (2);

[0055] (3);

[0056] (4);

[0057] (5);

[0058] Where W is the weight of the cargo, is the inclination angle of the downward conveyor line, is the friction coefficient between the cargo and the elastic band 2, is the rotation speed of the elastic band 2, It is the initial speed of the goods entering the downward conveying line.

[0059] Specifically, according to the characteristics of the damping roller 3, assuming that when the goods enter the speed reduction belt composed of the damping roller 3 and the elastic belt 2 at a speed of V0=30m / min, because the damping roller 3 is at V t =6m / min, a resistance equal to the gravity force of the cargo will be generated, so that the speed reduction belt composed of the damping roller 3 and the elastic belt 2 always moves at V t =6m / min uniform motion. Because the speed of the cargo is V0=30m / min, which is greater than the speed of the speed bump, sliding friction occurs between the cargo and the speed bump, and the cargo is decelerated by friction until the speed changes to V=6m / min, which is the same as the speed of the speed bump composed of the damping roller 3 and the elastic belt 2. The cargo will maintain a relatively static motion with the speed bump, and at this time the speed bump will gradually slow down to a standstill due to the loss of the forward momentum given by the cargo (the distance the speed bump moves from losing its forward momentum to being stationary is very short and can be ignored).

[0060] Assuming the mass of the cargo is m=20Kg, the inclination angle of the downdraft conveyor line is =10°, take =0.2, according to Newton's law: then the reverse force f generated by sliding friction is: , bringing in the above data, we get: The component force of cargo weight is , the resulting acceleration is , then the braking time According to the above formula, under this acceleration, the cargo can enter the stable speed V after sliding for 1.8s. t =6m / min. After the cargo slides for 1.8s, the distance it travels is L, which can be calculated by the formula Calculated, That is, when an object with a mass of m = 20 kg enters the angle with an initial velocity of V0 = 30 m / min =10° glide path, the required braking speed V t =6m / min speed reduction belt (i.e. elastic belt damping roller group) composed of damping roller 3 and elastic belt 4 has a length of 1.26m, the object can be decelerated to the state of V=6m / min and driven out of the slideway to avoid rollover or collision of the goods due to excessive sliding speed.

[0061] Assuming that the length of the downward conveying line is less than 1.26 meters, for example, 1.2 meters, the entire downward conveying line is composed of an elastic belt damping roller group. Assuming that the length of the elastic belt damping roller group with 4 non-powered rollers 4 is 0.5 meters, the length of the elastic belt damping roller group with 3 non-powered rollers 4 is 0.4 meters, and the length of the elastic belt damping roller group with 2 non-powered rollers 4 is 0.3 meters, the present application can use 3 elastic belt damping roller groups with 3 non-powered rollers 4, or 1 elastic belt damping roller group with 4 non-powered rollers 4, 1 elastic belt damping roller group with 3 non-powered rollers 4, and 1 elastic belt damping roller group with 2 non-powered rollers 4.

[0062] Assuming that the length of the downward conveyor line is greater than 1.26 meters, for example, 2 meters, the entire downward conveyor line needs to use an unpowered roller group in addition to the elastic belt damping roller group. The elastic belt damping roller group can use 3 elastic belt damping roller groups with 3 unpowered rollers 1 4, and the unpowered roller group is composed of an unpowered roller 2 5. The present application can use 2 0.4-meter-long unpowered roller groups, which are respectively arranged between two adjacent elastic belt damping roller groups. A silicone layer is provided on the outer peripheral side of the unpowered roller 2 5, so that the rolling friction between the goods and the unpowered roller group and the gravity component generated by the goods are roughly equal, so that the goods can slide on the unpowered roller group at a relatively constant speed. Among them, the silicone layer is detachably connected to the unpowered roller 2 5, and in actual use, a silicone layer with a suitable friction coefficient can be used to connect to the unpowered roller 2 5.

[0063] In addition, in order to make the damping unpowered roller machine of the present application work, the inclination angle of the descending conveyor line The sliding friction f must be satisfied The component force F of the object's gravity, that is, the inclination angle of the sliding conveyor line Need to meet , is the friction coefficient between the goods and the elastic band 2.

[0064] The damping roller 3 of the damping unpowered roller machine of the present application needs to use a suitable gear transmission mechanism so that the elastic belt 2 can move at a desired speed. The damping roller 3 rotates at a uniform speed, that is, the gear transmission mechanism with the inner and outer roller speed ratio I meeting the requirements needs to be selected. Among them, the inner and outer roller speed ratio I is obtained by the following formula:

[0065] (6);

[0066] (7);

[0067] (8);

[0068] (9);

[0069] (10);

[0070] (11);

[0071] (12);

[0072] (13);

[0073] (14);

[0074] Where W is the weight of the cargo, is the inclination angle of the downward conveyor line, is the rolling friction coefficient between the goods and the damping roller 3, R1 is the radius of the inner roller, R2 is the radius of the outer roller, , , are all independent values, which are the best positions to be selected when designing the damping roller. f1 is the friction coefficient between the friction plate and the inner wall of the roller, and m is the mass of the pendulum block. are the structural parameters of the roller, D is the diameter of the outer roller, n1 is the speed of the outer roller, and n2 is the speed of the inner roller.

[0075] Specifically, for example, the initial speed of the goods entering the damping roller 3 is V0=30m / min, the mass of the object is m=20Kg, and the angle of the glide path is =10°. The cargo is subject to the force of its gravity along the conveying direction. , because the angle at this time is a special large inclination angle, the general damping roller deceleration form can no longer meet the deceleration requirements, so this application adopts the combination of elastic belt + damping roller to achieve a continuous strong damping effect and play a deceleration role. At this time, the rolling friction coefficient between the goods and the damping roller 3 is =0.08, the corresponding friction force generated when the goods move on the roller is Therefore, the resistance provided by a single damping roller 3 is = (34-15) / 2 = 9.5N.

[0076] The working principle of the damping roller is that the outer roller starts to rotate under the action of the gravity of the goods, and the inner roller obtains a very large speed by increasing the speed through the internal planetary gear structure. Then the centrifugal force generated by the high-speed rotation of the inner swing block + friction plate of the inner roller and the friction generated by the friction of the roller wall realize the braking effect of the damping roller. Generally, the speed of the downhill slide is relatively reasonable at 5-10m / min. Now the braking speed is taken as V t =6m / min, the component force F1 of a single damping roller 3 is 9.5N. The friction force generated by the damping roller 3 through the internal friction plate is , according to the force arm , where R1 is the radius of the inner roller, R2 is the radius of the outer roller, take R1=20mm, R2=25mm, we can get ,but .

[0077] According to the structure of the damping roller, the resistance of the damping roller is provided by the friction force generated by the friction plate and the inner wall of the roller through the centrifugal force after the pendulum reaches a certain speed. According to the structure of the pendulum and the friction plate in the inner roller, the positive pressure (extrusion pressure) of the friction plate in contact with the inner wall of the roller provided by the centrifugal force is: F j , the centrifugal force is: F L .

[0078] in, , where , , are all independent values, which are the best positions to be selected when designing the damping roller. According to the principle of friction force generation, ,because , , Select the one that maximizes the friction force generated by the friction plate while satisfying the structure, that is, =65°, =0, because when the pendulum moves at high speed, the pulling force generated by the spring is very small and can be ignored. The friction coefficient between the friction plate and the inner wall is taken as f=0.8.

[0079] but .

[0080] The braking speed of the outer roller is known to be V t =6m / min, the speed of the outer drum is n1, the speed of the inner roller is n2, V t =6m / min=0.1m / s, then , the speed of the inner roller is n2=0.65I, and the angular velocity of the inner roller can be calculated as According to the centrifugal force formula The following formula can be calculated , where m=0.1Kg is determined based on the manufacturing material of the pendulum block, and m=0.1Kg is determined based on the design structure of the roller. =0.018m, and finally I=15.8. That is, when the speed ratio of the inner and outer rollers of the damping roller 3 is 15.8, the braking requirement of the damping unpowered roller machine of the present application can be met.

[0081] The damped unpowered roller conveyor of the present application can decelerate the goods to the required speed through an elastic belt damping roller group on a short-distance and large-inclination downward conveyor line, so that the goods can be smoothly conveyed downward to avoid collision or rollover of the goods. The setting method of the elastic belt damping roller group has the advantages of low cost and convenient disassembly and assembly.

[0082] The present application also discloses a method for using a damping unpowered roller machine, comprising the following steps:

[0083] S1 is based on the weight of the goods and the inclination angle of the downward conveyor line. and the required rotation speed of the elastic band 2 The required speed ratio I of the inner and outer rollers of the damping roller 3 is obtained, and the damping roller 3 with a gear transmission mechanism that meets the use requirements is selected according to the speed ratio I of the inner and outer rollers. The damping roller 3 with the inner and outer roller speed ratio I that meets the requirements can make the elastic belt 2 move at the desired speed. =6 m / min rotation. For example, when the mass of the goods is m=20Kg, the angle of the downward conveyor line =10°, the gear transmission mechanism's inner and outer roller speed ratio I is 15.8, which allows the elastic belt 2 to move at the desired speed. =6 m / min rotation.

[0084] S2 is based on the weight of the goods, the inclination angle of the downward conveyor line, and the required rotation speed of the elastic belt 2. The total length of the preset elastic belt damping roller set is obtained by the initial speed V0 of the goods entering the downward conveyor line. After the goods pass through the elastic belt damping roller set of this length (not necessarily continuous), the speed can be reduced to the desired reasonable speed to avoid collision or rollover.

[0085] S3 determines the number of elastic belt damping roller groups and the length of each elastic belt damping roller group according to the total length of the preset elastic belt damping roller group. It is necessary to set multiple elastic belt damping roller groups instead of only one, so that the deceleration effect achieved is better.

[0086] S4 installs the elastic belt damping roller set with the frame 1. During installation, it is only necessary to connect the axial ends of the damping roller 3 with the frame 1 through buckles, and the installation is very simple.

[0087] In addition, in S3, when the required length of the downward conveying line is greater than the total length of the preset elastic belt damping roller group, the number and setting position of the required unpowered roller group need to be determined. That is, the other parts of the downward conveying line need to be provided with unpowered roller groups with appropriate resistance, and the unpowered roller groups can enable the goods to move forward at a stable speed.

[0088] In the above S4, the required unpowered roller group is also installed with the frame 1. During installation, only the axial ends of the unpowered roller 2 5 need to be connected with the frame 1 through buckles, and the installation is very simple.

[0089] The above-described embodiments are only descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention should fall within the protection scope of the present invention, and the technical contents for which protection is sought in the present invention have been fully recorded in the claims.

Claims

1. A non-powered roller machine with damping, characterized in that: It comprises a frame (1) and a downward conveying line installed on the frame (1); the downward conveying line comprises an elastic belt damping roller group; The elastic belt damping roller set comprises: Elastic bands (2); The damping rollers (3), which are two in number, are used to mount the elastic belt (2) and allow the elastic belt (2) to move at a speed of Rotate at a constant speed; a non-powered roller (4) disposed between the two damping rollers (3) and used for supporting the elastic belt (2); The sum of the lengths of the preset elastic belt damping roller groups of the downward conveying line is L, where L is obtained by the following formula: （1）； （2）； （3）； （4）； （5）； Where W is the weight of the cargo, is the inclination angle of the downward conveyor line, is the friction coefficient between the cargo and the elastic band (2), is the rotation speed of the elastic band (2), is the initial speed of the goods entering the downward conveyor line, is the acceleration, is the reaction force generated by sliding friction, is the component of cargo weight, For the quality of the goods; The downward conveying line also includes: An unpowered roller group, arranged adjacent to the elastic belt damping roller group, comprises a plurality of unpowered rollers 2 (5); The inclination angle of the downward conveying line Need to meet , is the friction coefficient between the cargo and the elastic band (2); The speed ratio of the inner and outer rollers of the damping roller (3) is I, where I is obtained by the following formula: （6）； （7）； （8）； （9）； （10）； （11）； （12）； （13）； （14）； Where W is the weight of the cargo, is the inclination angle of the downward conveyor line, is the rolling friction coefficient between the cargo and the damping roller (3), R1 is the radius of the inner roller, R2 is the radius of the outer roller, , , are all independent values, which are the best positions to be selected when designing the damping roller. f1 is the friction coefficient between the friction plate and the inner wall of the roller, and m is the mass of the pendulum block. is the structural parameter of the roller, D is the diameter of the outer roller, is the rotation speed of the outer drum, is the inner roller speed, The friction force generated when the goods move on the rollers. It is the component force of the cargo’s gravity along the conveying direction. The resistance provided by a single damping roller, The friction force generated by the damping roller through the internal friction plate, is the inner roller angular velocity, is the braking speed of the outer roller.

2. The non-powered roller machine with damping according to claim 1, characterized in that: The number of the unpowered rollers (4) is 2-4.

3. The non-powered roller machine with damping according to claim 1, characterized in that: The outer peripheral side of the second unpowered roller (5) is provided with a silicone layer.

4. A method for using a damped unpowered roller machine, using the damped unpowered roller machine according to claim 1, characterized in that: The following steps are involved: S1 is based on the weight of the goods and the inclination angle of the downward conveyor line. and the required rotation speed of the elastic band (2) Obtaining a required inner and outer roller speed ratio I of the damping roller (3), and selecting a damping roller (3) whose gear transmission mechanism meets the use requirements according to the inner and outer roller speed ratio I; S2 is based on the weight of the goods and the inclination angle of the downward conveyor line. , the required rotation speed of the elastic band (2) and the initial speed of the cargo entering the descending conveyor line Obtaining the total length of the preset elastic belt damping roller set; S3 determines the number of elastic belt damping roller groups and the length of each elastic belt damping roller group according to the total length of the preset elastic belt damping roller group; S4 installs the elastic belt damping roller assembly and the frame (1).

5. The method for using a damping unpowered roller machine according to claim 4, characterized in that: In S3, when the required length of the downward conveying line is greater than the total length of the preset elastic belt damping roller group, it is also necessary to determine the number and setting position of the required unpowered roller group; The step S4 also includes installing the required unpowered roller group and the frame (1).

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