Lithium battery tamping pickaxe

Abstract

The utility model belongs to the technical field of railway maintenance equipment, and particularly discloses a lithium battery tamping pickaxe which comprises a supporting frame assembly, a motor assembly, a damping assembly, a clutch transmission assembly, a pickaxe barrel assembly and a battery pack assembly. The pickaxe barrel assembly comprises a pickaxe barrel and an eccentric shaft, an eccentric part is arranged on the lower portion of the eccentric shaft, the diameter of the eccentric part is larger than that of a shaft body, a notch is formed in the axis direction, the depth of the notch extends to the axis position, and the vibration amplitude is reduced through mass distribution optimization; the damping assembly is connected with the motor assembly and the pickaxe barrel assembly through the elastic damping part, and high-frequency vibration is isolated. The clutch transmission assembly comprises a centrifugal clutch disc and a crosshead transmission shaft, centrifugal force enables friction plates to be meshed to transmit power when the motor is driven, and a reset piece is automatically disengaged when the motor stops. The device is small in vibration and low in noise, is suitable for efficient tamping operation of railway ballast beds, and has the advantages of being labor-saving in operation and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of railway maintenance equipment technology, and in particular to a lithium-ion battery tamping pick. Background Technology

[0002] In railway line maintenance, tamping the ballast bed is a crucial step in restoring track smoothness. Traditional tamping equipment is mostly driven by gasoline engines, which presents the following problems:

[0003] Noise and pollution: Gasoline engines are noisy when running and emit exhaust fumes, which have a negative impact on the working environment and the health of operators.

[0004] Severe vibration transmission: Most existing equipment adopts an axial reciprocating vibration structure, and the vibration is directly transmitted to the operator through the handle, resulting in laborious operation and easy fatigue.

[0005] Low transmission efficiency: Some lithium battery tamping machines use flexible shaft transmission (such as the comparison document CN216474285U). Flexible shafts are prone to wear and have insufficient centrifugal force transmission efficiency, resulting in a short equipment life.

[0006] Insufficient vibration damping design: Existing vibration damping devices mostly use a single elastic ring structure, which cannot effectively isolate high-frequency vibrations, making the motor and battery components susceptible to impact damage.

[0007] Based on the above problems, there is an urgent need for a lithium battery tamping device that has low vibration, high transmission efficiency, and compact structure. Utility Model Content

[0008] The purpose of this invention is to provide a lithium-ion battery tamping pick that solves the problems of large vibration, inconvenient operation, and low transmission efficiency in the prior art by optimizing the transmission structure, improving the eccentric shaft design, and enhancing the shock absorption performance.

[0009] The lithium-ion battery-powered tamping pick designed in this utility model includes:

[0010] Support frame assembly;

[0011] The motor assembly is fixed to the support frame assembly;

[0012] The shock absorption components are suspended below the motor assembly;

[0013] The clutch transmission assembly is suspended below the motor assembly and located inside the shock absorption assembly; the input end of the clutch transmission assembly is connected to the output end of the motor assembly.

[0014] The pick barrel assembly is suspended below the shock absorption assembly, and the input end of the pick barrel assembly is connected to the output end of the clutch transmission assembly.

[0015] The pickaxe assembly has its input end connected to the output end of the pickaxe barrel assembly.

[0016] The electronically controlled drive assembly is fixed above the motor assembly and controls the operation of the motor assembly according to instructions;

[0017] The battery pack assembly, mounted on the support frame assembly, supplies power to the motor assembly and the electronic control drive assembly;

[0018] The pick barrel assembly includes:

[0019] A pick barrel, one end of which is connected to a shock-absorbing assembly, and the other end of which is connected to a pick head assembly;

[0020] An eccentric shaft includes a shaft body and an eccentric portion located at the lower part of the shaft body; both ends of the shaft body are rotatably connected to the inner wall of the pick barrel, and the upper part is connected to a clutch rotation assembly; the diameter of the eccentric portion is larger than the diameter of the shaft body, and the eccentric portion is provided with a cut extending along the axial direction; the depth of the cut is located at the axial direction of the eccentric portion.

[0021] In some optional embodiments of the present invention, the clutch transmission assembly includes: a clutch and a crosshead drive shaft; the clutch includes a clutch disc connected to the crosshead drive shaft and an active part connected to the output end of the motor assembly; when the motor assembly rotates, the active part is driven by centrifugal force to engage with the clutch disc, thereby driving the crosshead drive shaft to rotate.

[0022] Preferably, the active part includes a turntable connected to the output end of the motor assembly, and a set of clutch friction parts symmetrically arranged at the bottom of the turntable; one end of the clutch friction part is rotatably connected to the bottom of the turntable, and the other end is engaged with the clutch disc by centrifugal force when the motor assembly rotates.

[0023] In a further preferred embodiment, the active part further includes a reset member; one end of the reset member is connected to the middle of the clutch friction part, and the other end is fixed on the turntable. When the motor assembly stops rotating, the reset member disengages the clutch friction part from the clutch disc.

[0024] In some optional embodiments of the present invention, the shock-absorbing component includes: a motor connection portion suspended below the motor assembly, a pick barrel connection portion connected to the pick barrel assembly, and a shock-absorbing portion fixed between the motor connection portion and the pick barrel connection portion.

[0025] In some alternative embodiments of the present invention, the lithium-ion tamping pick further includes an operating lever assembly, which is fixed to the outer wall of the shock-absorbing assembly.

[0026] Preferably, the operating lever assembly is also connected to the support assembly via a connecting plate.

[0027] The beneficial effects of this utility model are:

[0028] The 523 cut design optimizes the vibration characteristics of the eccentric shaft and reduces operating noise; the cut design reduces the vibration of the eccentric shaft by 30%, and the operating noise is ≤75dB.

[0029] The centrifugal meshing structure of the clutch transmission assembly 40 has a fast response speed, reducing the risk of motor overload; the crosshead transmission structure improves transmission efficiency by 20% and extends equipment life.

[0030] The shock absorption components effectively isolate vibration, improving operating comfort and extending equipment life; the multi-stage shock absorption design reduces handle vibration intensity by 40%, making operation easier.

[0031] It produces no exhaust fumes and meets the requirements for green construction.

[0032] The eccentric shaft of the pick barrel assembly has a cut extending along the axis to optimize mass distribution and reduce vibration amplitude.

[0033] The clutch transmission assembly adopts a centrifugal friction plate meshing structure with a crosshead drive shaft to improve transmission response speed, and the return spring ensures quick disengagement when stopping;

[0034] The vibration damping components isolate vibrations through a ring-shaped elastomer or a multi-stage spring assembly, and further buffer high-frequency impacts by combining with silicone damping pads.

[0035] This invention features low vibration (handle vibration intensity ≤ 1.8 m / s). 2 It has advantages such as low noise (≤72dB) and high transmission efficiency (rated power 1.8kW). The whole machine weighs ≤25kg and is suitable for efficient tamping operations on railway track beds, meeting the requirements of green construction and comfortable operation.

[0036] The eccentric part has a diameter larger than the shaft and a slit is made along the axial direction, extending to the axial position. This optimizes mass distribution and reduces vibration amplitude. The damping assembly connects the motor assembly and the pick cylinder assembly via an elastic damping part, isolating high-frequency vibrations. The clutch transmission assembly includes a centrifugal clutch disc and a crosshead drive shaft. When driven by the motor, centrifugal force engages the friction plates to transmit power; when stopped, the reset component automatically disengages. This device features low vibration and low noise, making it suitable for efficient tamping operations on railway tracks. It also offers advantages such as labor-saving operation and long service life. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the disclosed embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below. These drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0038] Figure 1 This is a three-dimensional schematic diagram of the present invention. Figure 1 ;

[0039] Figure 2 This is a three-dimensional schematic diagram of the present invention. Figure 2 ;

[0040] Figure 3 This is a cross-sectional schematic diagram of the present invention;

[0041] Figure 4 This is a three-dimensional schematic diagram of the eccentric shaft of this utility model;

[0042] Figure 5 This is a three-dimensional schematic diagram of the clutch driving part of this utility model;

[0043] Figure 6 This is an exploded schematic diagram of the clutch driving part of this utility model. Detailed Implementation

[0044] The following is an appendix Figures 1-6 The technical solutions (including preferred solutions) of this utility model are further described in detail by listing some optional embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0045] Example 1

[0046] This embodiment provides a lithium-ion battery tamping pick, comprising:

[0047] Support frame assembly 10: adopts a high-strength aluminum alloy frame with anodized surface treatment, and has a total weight of ≤3.5kg; the top is fixed with motor assembly 20, and the two sides are symmetrically installed with detachable battery pack assembly 80.

[0048] The motor assembly 20 is fixed on the support frame assembly 10: a brushless DC motor with a rated power of 1.8kW (meeting the requirement of ≥1.5kW) and an adjustable speed of 0-3000r / min is selected; the output shaft is rigidly connected to the turntable 413 of the clutch transmission assembly 40 through a keyway.

[0049] The clutch transmission assembly 40 is suspended below the motor assembly 20 and located inside the shock absorption assembly 30, with its input end connected to the output end of the motor assembly 20.

[0050] A pick barrel assembly 50 is suspended below the shock-absorbing assembly 30, and its input end is connected to the output end of the clutch transmission assembly 40. The pick barrel assembly 50 includes: a pick barrel 51, one end of which is connected to the shock-absorbing assembly 30, and the other end of which is connected to the pick head assembly 60; an eccentric shaft 52, including a shaft body 521 and an eccentric part 522 disposed at the lower part of the shaft body 521; both ends of the shaft body 521 are rotatably connected to the inner wall of the pick barrel 51, and the upper part is connected to the clutch transmission assembly 40; the diameter of the eccentric part 522 is larger than the diameter of the shaft body 521, and the eccentric part 522 is provided with a cut 523 extending along the axial direction, the depth of the cut 523 being located at the axial position of the eccentric part 522.

[0051] The shock absorption component 30 is suspended below the motor component 20.

[0052] The pickaxe assembly 60 has its input end connected to the output end of the pickaxe barrel assembly 50.

[0053] An electronically controlled drive assembly 70 is fixed above the motor assembly 20 and is used to control the operation of the motor assembly 20.

[0054] The battery pack assembly 80 is mounted on the support frame assembly 10 and supplies power to the motor assembly 20 and the electronic control drive assembly 70.

[0055] The operating lever assembly 90 is fixed to the outer wall of the shock absorption assembly 30.

[0056] In some embodiments of the present invention, the operating lever assembly 90 is connected to the support frame assembly 10 via a connecting plate 91.

[0057] Example 2

[0058] Based on Example 1, the eccentric shaft 52 is further optimized. The notch 523 is changed to a spiral groove structure with a gradually changing depth (3mm to 6mm) to reduce stress concentration; the surface of the eccentric part 522 is nitrided to increase the hardness to HRC60 and extend its service life. As a result, the vibration amplitude is reduced by 10%, making it suitable for high-intensity continuous operation.

[0059] Example 3

[0060] Based on Examples 1 and 2, the clutch transmission assembly is further optimized.

[0061] The clutch transmission assembly 40 includes a clutch 41 and a crosshead drive shaft 42. The clutch 41 includes an active part 411 connected to the output end of the motor assembly 20 and a clutch disc 412 connected to the crosshead drive shaft 42. When the motor assembly 20 rotates, the active part 411 is driven by centrifugal force to engage with the clutch disc 412, thereby driving the crosshead drive shaft 42 to rotate.

[0062] In some embodiments of the present invention, the active part 411 includes: a turntable 413, which is fixedly connected to the output end of the motor assembly 20; a pair of clutch friction parts 414, which are symmetrically arranged at the bottom of the turntable 413, one end of which is rotatably connected to the turntable 413; when the motor assembly 20 rotates, the other end of the clutch friction part 414 is subjected to centrifugal force and engages with the clutch disc 412.

[0063] In some embodiments of the present invention, the active part 411 further includes a reset member 415, one end of which is connected to the middle part of the clutch friction part 414, and the other end is fixed to the turntable 413; when the motor assembly 20 stops rotating, the reset member 415 causes the clutch friction part 414 to disengage from the clutch disc 412.

[0064] Preferably, the reset element 415 is a stainless steel tension spring with a stiffness coefficient of 15 N / mm, ensuring that the clutch friction part 414 quickly disengages from the clutch disc 412 when the machine stops.

[0065] In some embodiments of the present invention, a fan 416 is integrated on the turntable 412, and an air inlet is provided on the motor connection part 31. In this way, the motor can be cooled.

[0066] Example 4

[0067] The shock-absorbing component 30 includes: a motor connection part 31, which is suspended below the motor assembly 20; a pick barrel connection part 32, which is connected to the pick barrel assembly 50; and a shock-absorbing part 33, which is fixed between the motor connection part 31 and the pick barrel connection part 32. The shock-absorbing part 33 is made of elastic material and is distributed in a ring array.

[0068] Example 5

[0069] Based on the above embodiments, the shock absorption components are further optimized.

[0070] The damping unit 33 is replaced with a three-stage helical spring assembly: the first stage spring has a stiffness of 50 N / mm (absorbing high-frequency micro-amplitude vibrations); the second stage spring has a stiffness of 30 N / mm (buffering mid-frequency vibrations); and the third stage spring has a stiffness of 15 N / mm (isolating low-frequency large-amplitude vibrations). The outer side of the spring is wrapped with a nitrile rubber sleeve to further reduce resonance noise.

[0071] The working process of this utility model:

[0072] 1. Start motor 20, turntable 413 drives clutch friction part 414 to rotate at high speed;

[0073] 2. Centrifugal force causes the clutch friction part 414 to expand outward and engage with the clutch disc 412, and the power is transmitted to the eccentric shaft 52 through the crosshead drive shaft 42;

[0074] 3. The rotation of the eccentric shaft 52 generates radial vibration, which drives the pick 60 to perform tamping operations;

[0075] 4. When the machine stops, the reset piece 415 pulls the clutch friction part 414 to disengage, and the motor stops running idle.

[0076] Through the above embodiments, this utility model, while meeting core indicators such as rated power, cylinder head hardness, and vibration frequency, significantly improves operational comfort and equipment reliability through eccentric shaft with cutouts, multi-stage vibration reduction, and material optimization, fully meeting the technical requirements of railway maintenance operations.

[0077] Those skilled in the art will readily understand that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, combinations, substitutions, improvements, etc., made under the spirit and principles of the present utility model are included within the protection scope of the present utility model.

Claims

1. A lithium battery rammer, characterized by, include: Support frame assembly; The motor assembly is fixed to the support frame assembly; The shock absorption assembly is suspended below the motor assembly; The clutch transmission assembly is suspended below the motor assembly and located inside the shock absorption assembly, with its input end connected to the output end of the motor assembly; The pick barrel assembly is suspended below the shock absorption assembly, and its input end is connected to the output end of the clutch transmission assembly. A pickaxe assembly, the input end of which is connected to the output end of the pickaxe barrel assembly; An electronically controlled drive assembly is fixed above the motor assembly and is used to control the operation of the motor assembly; A battery pack assembly, mounted on the support frame assembly, supplies power to the motor assembly and the electronic control drive assembly; The pick barrel assembly includes: The pick barrel has one end connected to the shock absorption assembly and the other end connected to the pick head assembly; An eccentric shaft includes a shaft body and an eccentric portion located at the lower part of the shaft body; both ends of the shaft body are rotatably connected to the inner wall of the pick barrel, and the upper part is connected to the clutch transmission assembly; the diameter of the eccentric portion is larger than the diameter of the shaft body, and the eccentric portion is provided with a cut extending along the axial direction, the depth of the cut being located at the axial position of the eccentric portion.

2. The lithium battery rammer as claimed in claim 1, wherein, The clutch transmission assembly includes: a clutch and a crosshead drive shaft; The clutch includes an active part connected to the output end of the motor assembly and a clutch disc connected to the crosshead drive shaft; When the motor assembly rotates, the active part is driven by centrifugal force to engage with the clutch disc, thereby driving the crosshead drive shaft to rotate.

3. The lithium battery rammer as claimed in claim 2, wherein, The active unit includes: The turntable is fixedly connected to the output end of the motor assembly; A pair of clutch friction parts are symmetrically arranged at the bottom of the turntable, with one end of each part rotatably connected to the turntable. When the motor assembly rotates, the other end of the clutch friction part is subjected to centrifugal force and engages with the clutch disc.

4. The lithium battery rammer as claimed in claim 3, wherein, The active part also includes a reset member, one end of which is connected to the middle of the clutch friction part, and the other end is fixed to the turntable; when the motor assembly stops rotating, the reset member causes the clutch friction part to disengage from the clutch disc.

5. The lithium battery rammer of claim 1, wherein, The shock absorption components include: The motor connection part is suspended below the motor assembly; The pick barrel connecting part is connected to the pick barrel assembly; A shock-absorbing part is fixed between the motor connection part and the pick barrel connection part. The shock-absorbing part is made of elastic material and is distributed in a ring array.

6. The lithium battery rammer according to claim 1 or 5, characterized in that, It also includes an operating lever assembly, which is fixed to the outer wall of the shock-absorbing assembly.

7. The lithium electric rammer pick of claim 6 wherein, The operating lever assembly is connected to the support frame assembly via a connecting plate.

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