Chain elevator with drum-type material bracket

By introducing a roller-type material support and counterweight unit into the chain elevator, the problem of high load on the drive motor was solved, achieving stable vertical transportation and reduced energy consumption.

CN223792365UActive Publication Date: 2026-01-13MIANYANG CITY UNIV
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Patent Information

Application Number
CN202520468231.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-18
Publication Date
2026-01-13
Estimated Expiration
2035-03-18

AI Technical Summary

Technical Problem

Existing chain elevators suffer from high loads, severe losses, and low stability due to their single-chain drive method. Furthermore, the drive motor requires a large torque to lift the material.

Method used

The design employs a roller-type material support frame and a counterweight unit. Through the coordinated operation of the drive unit, lifting unit, blocking cylinder, and counterweight unit, stable vertical transportation of materials is achieved. The counterweight unit provides equipment stability and torque reduction, thereby reducing the load on the drive unit.

Benefits of technology

It achieves stable vertical transport of materials, reduces the load on the drive unit, reduces energy consumption, improves space utilization, and makes the lifting process smoother.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a chain elevator with a drum-type material bracket, which comprises a frame, a driving device I is arranged in the frame, a driving gear at the output end of the driving device I is connected with a lifting unit arranged in the frame, and the drum-type material bracket is mounted at the moving end, opposite to the front surface of the frame, of the lifting unit. The drum-type material bracket is connected with an output chain wheel at the output end of the driving device II, and a blocking air cylinder is arranged on one side of the drum-type material bracket; and the counterweight unit is mounted at the moving end, opposite to the back surface of the rack, of the lifting unit. According to the chain type elevator with the drum type material bracket, the problems that the stability provided by an existing single-group chain is low, and a driving motor needs to provide large torque, so that the load is high, and the chain type elevator is prone to damage are solved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to cargo conveying technical field, concretely is a chain type elevator with roller type material bracket. BACKGROUND

[0002] Chain elevator is a kind of mechanical equipment that realizes the vertical lifting of material or object by chain as transmission component, is widely used in various fields of industrial production, such as the transportation lifting of porcelain tile, brick etc.

[0003] In prior art, chain elevator realizes the movement in vertical direction by single set of chain transmission mode, generally speaking, the motor driving chain needs to generate larger torque to make chain operation, resulting in large motor load and serious loss, such as application number: CN202221475625.X, a new type of chain elevator, by driving motor makes that driving sprocket rotates, and under the cooperation of driven sprocket, chain drives lifting frame to move up and down, but the defects of the device are: the stability provided by single set of chain is low and the up and down operation of the whole device is realized by driving motor, driving motor needs to provide larger torque to lift bracket and material, resulting in high load of driving motor and easy damage. SUMMARY

[0004] One object of the utility model is to solve at least the above problems and / or defects, and provide at least the advantages to be explained later.

[0005] In order to realize these objects and other advantages according to the utility model, a chain type elevator with roller type material bracket is provided, comprising: a rack, a driving device I is arranged in the rack, and the driving gear of the output end of the driving device I is connected with a lifting unit arranged in the rack, further comprising:

[0006] Roller type material bracket is installed on the moving end of the lifting unit opposite the front of the rack, and the roller type material bracket is connected with the output sprocket of the output end of the driving device II, and the roller type material bracket is provided with a blocking cylinder on one side;

[0007] Counterweight unit is installed on the moving end of the lifting unit opposite the back of the rack.

[0008] Preferably, the structure of the lifting unit comprises:

[0009] Two sets of sprocket fixed shafts are installed on the rack through bearing seat at both ends, and the two sets of sprocket fixed shafts are located at the bottom end and top end of the rack respectively;

[0010] An auxiliary sprocket is installed on the sprocket fixed rotating shaft, and transmission is realized between the auxiliary sprocket and the drive gear through an auxiliary belt;

[0011] A main sprocket I is installed on the sprocket fixed rotating shaft at the bottom end, and transmission is realized with a main sprocket II installed on the sprocket fixed rotating shaft at the top end through a main chain;

[0012] A secondary sprocket I is installed on both sides of the main sprocket I, and transmission is realized with a secondary sprocket II installed on both sides of the main sprocket II through a secondary chain set.

[0013] Preferably, slide rails are arranged on both sides of the frame, and the structure of the drum-type material carrier comprises:

[0014] A material carrier is arranged with slide blocks on both sides of the opposite side of the frame, and the slide blocks are slidably connected with the slide rails, and the material carrier is fixed with the main chain and the secondary chain set through a connecting piece;

[0015] A drum set is arranged in a transverse linear distribution, and a single drum is rotatably installed on the material carrier through a sprocket III on one side, and the blocking cylinder is installed on the material carrier opposite the drum set;

[0016] Tension sprockets are symmetrically arranged on both sides of the material carrier with respect to the drum set, and a plurality of tension sprockets are arranged;

[0017] An output sprocket on the output end of the drive device II is in transmission with the sprocket III and the tension sprocket through a chain.

[0018] Preferably, two groups of counterweight units are symmetrically arranged with respect to the central axis of the frame, and the structure of a single counterweight unit comprises:

[0019] A counterweight rod guide is fixedly installed on the frame through a fixed seat;

[0020] A counterweight rod is connected with the counterweight rod guide through a linear bearing seat, and is fixedly connected on the secondary chain set.

[0021] The utility model at least has following beneficial effects:

[0022] The device realizes stable vertical transportation of materials through the cooperative work of the drive device I, the lifting unit, the drum-type material carrier, the drive device II, the blocking cylinder and the counterweight unit.

[0023] The device minimizes the floor area and improves the space utilization rate under the premise of meeting the functional requirements.

[0024] The counterweight unit of the device ensures that the hoist is stable during operation, provides torque reduction for the driving device, reduces the load on the driving device, reduces energy consumption, and makes the lifting process more stable.

[0025] Other advantages, objects and features of the present application will be apparent from the following description, and will be understood by those skilled in the art. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The overall structure of the present application is shown in the figure;

[0027] Figure 2 The structure of the lifting unit of the present application is shown in the figure;

[0028] Figure 3 The enlarged structure of the lower part of the lifting unit of the present application is shown in the figure;

[0029] Figure 4 The structure of the drum-type material carrier of the present application is shown in the figure;

[0030] Figure 5 The structure of the counterweight unit of the present application is shown in the figure;

[0031] Figure 6 The position structure of the blocking cylinder of the present application is shown in the figure;

[0032] Figure 7 The cross-sectional structure of the material carrier of the present application is shown in the figure;

[0033] Figure 8 The overhead view of the material carrier of the present application is shown in the figure;

[0034] Figure 9 The position cross-section of the wear-resistant plate of the present application is shown in the figure;

[0035] Markings in the figure: 1, frame, 11, slide rail, 2, driving device I, 21, driving gear, 3, lifting unit, 31, chain wheel fixed shaft, 32, bearing seat, 33, auxiliary chain wheel, 34, auxiliary belt, 35, main chain wheel I, 350, main chain wheel II, 36, main chain, 37, auxiliary sprocket I, 370, auxiliary sprocket II, 38, auxiliary chain set, 4, drum-type material carrier, 41, material carrier, 410, sliding block, 42, drum, 43, chain wheel III, 44, tension sprocket, 45, upper wear-resistant guide plate, 46, lower wear-resistant guide plate, 5, driving device II, 51, output sprocket, 6, blocking cylinder, 7, counterweight unit, 71, counterweight rod guide, 72, fixed seat, 73, counterweight rod, 74, linear bearing seat. DETAILED DESCRIPTION

[0036] The utility model makes further detailed description in combination with the drawings, to enable the person skilled in the art to implement according to the description text.

[0037] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0038] It should be noted that in the description of the utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "mount", "provided with", "sleeved / connected", "connected" and the like should be understood broadly, for example, "connected" can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, or can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] In addition, in the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] The utility model will be described in detail in combination with the drawings:

[0042] Figures 1-9 A chain type elevator with a roller type material bracket is shown, comprising: a rack 1, a driving device I 2 is arranged in the rack 1, and the driving gear 21 at the output end of the driving device I 2 is connected with the lifting unit 3 arranged in the rack 1, further comprising:

[0043] Roller material carrier 4, which is installed on the moving end of the lifting unit 3 opposite the front of the frame 1, and the roller material carrier 4 is connected with the output sprocket 51 of the output end of the driving device II 5, and the roller material carrier 4 is provided with a blocking cylinder 6 on one side;

[0044] Counterweight unit 7, which is installed on the moving end of the lifting unit 3 opposite the back of the frame 1.

[0045] Working principle:

[0046] The input conveying station machine conveys the material to the front of the chain type elevator with the roller material carrier, starts the driving device II 5 through the external power supply, so that the output sprocket 51 drives the roller material carrier 4 to roll, and the material horizontally slides onto the roller material carrier 4, until the whole material is completely placed on the roller material carrier 4, the blocking cylinder 6 started by the external power supply, to ensure that the material does not back run and cause sliding;

[0047] The operator first closes the driving device II 5, so that the roller material carrier 4 stops rolling, and then

[0048] Start the driving device I 2 through the external power supply, and the driving gear 21 at the output end of the driving device I 2 starts to rotate, the driving gear 21 is connected with the lifting unit 3, and the power of the driving device is transmitted to the lifting unit 3, and the lifting unit 3 starts to work, and the material is vertically moved in the vertical direction.

[0049] When the lifting unit 3 sends the roller material carrier 4 to the predetermined height, the driving device I 2 stops running, at this time, the driving device II 5 on the roller material carrier 4 starts again, and the material is horizontally transported to the predetermined output conveying station machine;

[0050] After the material conveying is completed, the driving device II 5 is closed, and the driving device I 2 is started to send the roller material carrier 4 back to the initial position, waiting for the next round of material lifting;

[0051] Among them, ① the counterweight unit 7 is installed on the frame 1, and the main function is to balance the weight of the lifting unit 3 moving end, the material carrier 41 and the material through its own weight, according to the principle of force balance, the gravity generated by the counterweight unit 7 is opposite to the direction of the gravity of the lifting unit 3 moving end, the material carrier 41 and the material, in this way, when the driving device drives the lifting unit 3, the required resultant force will be reduced, thereby reducing the load of the driving device, reducing energy consumption, and making the lifting process more stable, reducing the requirement for the structural strength of the equipment, in actual use, when the lifting unit 3 rises, the counterweight unit 7 descends, and vice versa, when the lifting unit 3 descends, the counterweight unit 7 rises, always maintaining a balanced state;

[0052] The selected brand of the blocking cylinder 6 is SMC, and the model is RS2H63-30DL-A90, and the specific parameter specifications are as follows:

[0053] Table 1 - Parameter information 1 of the blocking cylinder 6

[0054]

[0055] Table 2 - Parameter information 2 of the blocking cylinder 6

[0056] Bore (mm) Standard stroke 50 30 63 30 80 40

[0057] Table 3 - Parameter information 3 of the blocking cylinder 6

[0058]

[0059] In summary, the device realizes stable vertical transportation of materials through the cooperative work of the driving device I 2, the lifting unit 3, the drum material carrier 4, the driving device II 5, the blocking cylinder 6 and the counterweight unit 7.

[0060] The device minimizes the floor area and improves the space utilization rate under the premise of meeting the functional requirements.

[0061] The counterweight unit 7 of the device ensures the overall stability of the lifting machine during operation and provides a torque reduction effect for the driving device, thereby reducing the load of the driving device, reducing energy consumption, and making the lifting process more stable.

[0062] In the above scheme, the structure of the lifting unit 3 includes:

[0063] Two sets of chain wheel fixed shafts 31 are installed on the rack 1 through bearing seats 32 at both ends, and the two sets of chain wheel fixed shafts 31 are located at the bottom end and the top end of the rack 1 respectively.

[0064] An auxiliary chain wheel 33 is installed on the chain wheel fixed shaft 31, and the auxiliary chain wheel 33 and the driving gear 21 are connected through an auxiliary belt 34.

[0065] A main chain wheel I 35 is installed on the chain wheel fixed shaft 31 at the bottom end, and is connected to a main chain wheel II 35 through a main chain 36.

[0066] A vice toothed chain wheel I 37 is installed on both sides of the main chain wheel I 35, and is connected to a vice toothed chain wheel II 370 installed on both sides of the main chain wheel II 35 through a vice chain group 38.

[0067] Working principle:

[0068] When the driving device Ⅰ2 starts, the driving gear 21 at the output end of the driving device Ⅰ2 starts to rotate, and the rotation of the driving gear 21 is transmitted to the auxiliary sprocket 33 through the auxiliary belt 34, thereby driving the sprocket fixed rotating shaft 31 to rotate, and since the sprocket fixed rotating shaft 31 is arranged on the rack 1 through the bearing seat 32 at both ends, the sprocket fixed rotating shaft 31 can stably rotate on the rack 1;

[0069] When the sprocket fixed rotating shaft 31 rotates, the main sprocket I 35 at the bottom end rotates, the rotation of the main sprocket I 35 drives the main chain 36 to move, and the main chain 36 drives the main sprocket II 350 at the top end to rotate, at the same time, the two side auxiliary sprockets I 37 are driven by the auxiliary sprocket II 370 to rotate synchronously by the auxiliary chain set 38, and in the movement process of the main chain 36 and the auxiliary chain set 38, the drum material bracket 4 connected with them is vertically driven to realize the lifting and lowering of the material;

[0070] Among them, ① the auxiliary chain set 38 cooperates with the main chain 36 transmission system to not only increase the stability and reliability of the transmission, but also make the lifting process more stable; and the main chain 36 can share the stress of the auxiliary chain set 38, prolonging the service life of the chain and sprocket;

[0071] ② In practice, according to the nature of the lifted material, the working environment and the lifting height, the main chain 36 of the device is selected as double-row roller chain GB / T 1243-1997, and the auxiliary chain set 38 on both sides of the lifting unit 3 is selected as single-row roller chain GB / T 1243-1997;

[0072] ③ In practice, the driving device Ⅰ2 in the device is selected as a precision ground motor electromagnetic brake reduction motor B370Y38L60HG type motor, and the specific parameters are as follows:

[0073] Table 4-Parameter information 1 of driving device Ⅰ2 (with horizontal / vertical reduction box)

[0074]

[0075] Table 5-Parameter information 2 of driving device Ⅰ2 (with right angle solid / hollow reduction box)

[0076]

[0077] As in the above scheme, the rack 1 is provided with slide rails 11 on both sides, and the structure of the drum material bracket 4 comprises:

[0078] A material bracket 41 is provided with slide blocks 410 on both sides of one side opposite to the rack 1, and the slide blocks 410 are slidably connected with the slide rails 11, and the material bracket 41 is fixed with the main chain 36 and the auxiliary chain set 38 through a connecting piece;

[0079] A plurality of rollers 42 are arranged in a transverse linear distribution, and a single roller 42 is rotatably mounted on the material carrier 41 by a sprocket III 43 on one side; the blocking cylinder 6 is mounted on the material carrier 41 relative to the roller 42;

[0080] A tension sprocket 44 is symmetrically arranged on both sides of the material carrier 41 relative to the plurality of rollers 42, and the tension sprocket 44 is provided with a plurality of;

[0081] The output sprocket 51 on the output end of the driving device II 5 is driven by a chain and sprocket III 43 and tension sprocket 44.

[0082] Working principle:

[0083] The material carrier 41 is connected to the slide rail 11 by the sliding blocks 410 on both sides and cooperates with the main chain 36 and the secondary chain set 38 to realize vertical movement in the vertical direction,

[0084] The input conveying station machine conveys the material to the front of the chain type elevator of the roller type conveying material carrier 41, starts the driving device II 5 by an external power source, and the output sprocket 51 on the output end of the driving device II 5 starts to rotate. The output sprocket 51 is driven by a chain and sprocket III 43 and tension sprocket 44 on the roller type material carrier 4, thereby driving a plurality of rollers 42 to roll, thereby realizing the horizontal sliding movement of the material to the roller type material carrier 4;

[0085] Among them, ① since a single roller 42 is rotatably mounted on the material carrier 41 by a sprocket III 43 on one side, when the sprocket III 43 rotates under the drive of the chain, it will drive a plurality of rollers 42 connected thereto to complete the rotation. Since the plurality of rollers 42 are arranged in a transverse linear distribution, the rotation of the plurality of rollers 42 enables the material placed on the rollers 42 to move along the axial direction of the rollers 42;

[0086] ② The tension sprocket 44 is symmetrically arranged on both sides of the material carrier 41 relative to the plurality of rollers 42, and its main function is to maintain the tension state of the chain. During chain transmission, the chain may become loose over time or with changes in working conditions, affecting the transmission effect. The tension sprocket 44 applies a certain tension to the chain to keep the chain always at an appropriate tightness, ensuring good engagement between the chain and the sprocket III 43, and ensuring the stability and reliability of the roller 42 rotation;

[0087] ③ An upper wear-resistant guide plate 45 is added below the sprocket III 43, and a lower wear-resistant guide plate 46 is added above the tension sprocket 44. The chain slides on the wear-resistant guide plate 45 and the lower wear-resistant guide plate 46. The wear-resistant guide plate 45 and the lower wear-resistant guide plate 46 can support the chain to prevent the chain from loosening, and the wear-resistant material (such as alloy steel) can also prevent the chain from being worn out after long-term use;

[0088] In actual installation, the chain is located below the sprocket Ⅲ 43, and is attached to the upper side of the upper wear-resistant guide plate 45, passes through the two sides of the tension sprocket 44, and is attached to the upper side of the lower wear-resistant guide plate 46, and then passes through the middle segment of the tension sprocket 44 and the output sprocket 51 in turn, which is similar to T type as a whole;

[0089] (4) The selected motor model of the driving device II 5 is F250Y380L25HG;

[0090] Table 6-Parameter information 1 of the driving device II 5

[0091]

[0092] Table 7-Parameter information 2 of the driving device II 5

[0093]

[0094] Table 8-Parameter information 3 of the driving device II 5

[0095]

[0096] (5) The chain of the device is selected in the form of GB / T 1243-1997 short pitch transmission precision roller chain and sprocket, and the specific parameters are as follows:

[0097] Table 9-Parameter information of the chain

[0098]

[0099] As in the above scheme, the counterweight unit 7 is symmetrically provided with two groups about the central axis of the rack 1, and the structure of a single counterweight unit 7 includes:

[0100] The counterweight rod guide 71 is fixedly installed with the rack 1 through the fixing seat 72;

[0101] The counterweight rod 73 is connected with the counterweight rod guide 71 through the linear bearing seat 74, and is fixedly connected to the auxiliary chain set 38.

[0102] Working principle:

[0103] When the driving device I 2 is started and the lifting unit 3 is lifted, the auxiliary chain set 38 will pull the counterweight rod 73 connected thereto to move downward. Since the counterweight rod 73 has a certain weight, the direction of the gravity generated thereby is opposite to the direction of the gravity of the drum-type material carrier 4 and the material, thereby playing a role of balancing the load, so that the resultant force required to be overcome by the driving device I 2 when lifting the material is reduced, the load of the driving device I 2 is reduced, and the energy consumption is reduced;

[0104] Conversely, when the driving device I2 makes the lifting unit 3 descend, the auxiliary chain set 38 will pull the weight rod 73 connected therewith to move upward, at this time the gravity of the weight rod 73 and the movement direction of the drum type material carrier 4 and the material form a certain balance relationship, ensure the stability of the descending process, avoid the damage to the equipment and the material due to the too fast or unstable descending speed;

[0105] Wherein, ① in the process that the weight rod 73 moves along with the auxiliary chain set 38, the linear bearing seat 74 slides on the weight rod guide rod 71, provides accurate guide for the movement of the weight rod 73, the guide structure ensures that the weight rod 73 can move along the predetermined straight track, avoids appearing to sway or deviate, guarantees the collaborative working effect between the weight unit 7 and the lifting unit 3, further improves the stability and reliability of the whole equipment operation;

[0106] The weight rod guide rod 71 is firmly installed on the rack 1 through the fixing seat 72, provides stable support and guide structure for the whole weight unit 7.

[0107] As described above, through the work of the weight unit 7, the load of the driving device I2 is reduced, so that the driving device I2 can operate under more reasonable working conditions, prolong the service life, and the load is balanced, the movement of the lifting unit 3 is more stable, reduces the vibration and impact in the process of equipment operation, is favorable to protect other parts of the equipment, improves the working efficiency and stability of the device.

[0108] Although the embodiments of the utility model have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, it can be fully applied to various fields suitable for the utility model, and for those skilled in the art, other modifications can be easily realized, therefore, the utility model is not limited to specific details and the figures shown and described herein under the general concept defined by the claims and equivalent range, and the utility model is not limited to specific details and the figures shown and described herein.

Claims

1. A chain-and-flight elevator with a drum-type material carrier, comprising: The rack is internally provided with a driving device I, and a driving gear at an output end of the driving device I is connected with a lifting unit provided in the rack, characterized in that further comprising: A drum-type material bracket is installed on a moving end of the lifting unit opposite to a front face of the rack, and the drum-type material bracket is connected with an output sprocket at an output end of the driving device II, and a blocking cylinder is provided on one side of the drum-type material bracket; A counterweight unit is installed on a moving end of the lifting unit opposite to a back face of the rack.

2. A chain-type elevator with a drum-type material carrier according to claim 1, characterized in that, The structure of the lifting unit comprises: Two groups of chain wheel fixed rotating shafts are installed on the rack through bearing seats at two ends thereof, and the two groups of chain wheel fixed rotating shafts are respectively located at a bottom end and a top end of the rack; An auxiliary sprocket is installed on the chain wheel fixed rotating shaft, and the auxiliary sprocket is driven by an auxiliary belt between the auxiliary sprocket and the driving gear; A main sprocket I is installed on the chain wheel fixed rotating shaft at the bottom end, and is driven by a main chain with a main sprocket II installed on the chain wheel fixed rotating shaft at the top end; A secondary toothed sprocket I is installed on two sides of the main sprocket I, and is driven by a secondary chain set with a secondary toothed sprocket II installed on two sides of the main sprocket II.

3. A chain-type elevator with a drum-type material carrier according to claim 2, characterized in that, Sliding rails are provided on two sides of the rack, and the structure of the drum-type material bracket comprises: A material bracket is provided with sliding blocks on two sides of a face opposite to the rack, and the sliding blocks are slidingly connected with the sliding rails, and the material bracket is fixed with the main chain and the secondary chain set through a connecting piece; A drum set is linearly distributed in a transverse direction, and a single drum is rotatably installed on the material bracket through a sprocket III on one side of the single drum, and the blocking cylinder is installed on the material bracket opposite to the drum set; Tension sprockets are symmetrically provided on two sides of the material bracket with respect to the drum set, and the tension sprockets are provided in a plurality of numbers; The output sprocket on the output end of the driving device II is driven by a chain with the sprocket III and the tension sprockets.

4. The chain-type elevator with a drum-type material carrier according to claim 2, characterized in that, The counterweight unit is symmetrically provided with two groups with respect to a central axis of the rack, and the structure of a single counterweight unit comprises: A counterweight rod guide is fixedly installed on the rack through a fixed seat; A counterweight rod is connected with the counterweight rod guide through a linear bearing seat, and is fixedly connected with the secondary chain set.

Citation Information

Patent Citations

  • Novel chain elevator

    CN217418056U