Transmission device of crawler chassis hammer crusher

Abstract

The utility model discloses a transmission device of a crawler chassis hammer crusher, which relates to the technical field of road construction and maintenance, and is characterized in that a crushing transmission assembly is arranged between an engine and a crushing box, and the crushing transmission assembly comprises a plate belt coupler, a U-shaped mounting seat, a driving belt wheel, a driven belt wheel and a transmission belt. According to the device, vibration generated by starting, stopping and crushing impact of an engine is absorbed through the elastic plate belt, rigid impact of a transmission system is reduced, and the service life of the engine, the service life of a bearing and the service life of a belt are prolonged; large stress generated by vibration, impact and the like can be effectively buffered and absorbed; a closed-loop control system of the hydraulic oil cylinder and the pressure sensor monitors the tension of the belt in real time, automatically adjusts the expansion amount of the oil cylinder and automatically compensates tension attenuation caused by belt abrasion or temperature change, so that the belt is always kept at a proper tension degree, and the transmission efficiency is ensured to be stable.

Description

Technical Field

[0001] This utility model relates to the field of highway construction and maintenance technology, and more specifically, to a transmission device for a tracked chassis hammer crusher. Background Technology

[0002] In the field of highway construction and maintenance, cement pavement breakers are key equipment for treating old cement pavements. With increasing traffic volume and aging, a large number of cement pavements suffer from damage and aging, requiring crushing for paving new roads or use as road base materials. Tracked cement pavement breakers, with their excellent mobility and crushing performance, are widely used in practical engineering projects, and the transmission device, as its core component, directly affects the overall performance of the equipment.

[0003] Traditional cement pavement crusher transmission devices have many problems:

[0004] Engine and output shaft are prone to damage: Previous transmission designs lacked adequate support for the engine output shaft. During prolonged operation, the output shaft is continuously pulled by the belt, lacking effective and stable support. This leads to loosening of the output shaft over time. This not only accelerates wear on the output shaft, causing seal damage and oil leaks, but also can cause the engine mounting bracket to break, and in severe cases, even damage the engine block, increasing maintenance costs and downtime, and impacting project progress.

[0005] Lack of intelligent adjustment: Traditional transmission devices cannot monitor and automatically adjust belt tension in real time. In actual operation, belt tension changes with equipment operation, temperature variations, and belt wear. Excessive belt tension increases wear on the belt and pulleys, shortening their lifespan; insufficient tension causes belt slippage, affecting transmission efficiency. Traditional devices rely on periodic manual inspection and adjustment, which is not only inefficient but also makes it difficult to ensure the belt is always in optimal working condition.

[0006] With the increasing demands for efficiency, stability, and reliability of cement pavement crushers in engineering construction, existing transmission structures are no longer sufficient. Developing a transmission structure for cement pavement crushers that can effectively prevent engine damage, improve transmission efficiency, and possess intelligent adjustment capabilities has become an urgent problem to be solved in the industry. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of existing technologies and propose a transmission device for a tracked chassis hammer crusher. The crusher includes a machine body and an engine and a crushing box mounted on the machine body. A crushing transmission assembly is provided between the engine and the crushing box. The crushing transmission assembly includes:

[0008] The plate belt coupling is connected to the output shaft of the engine. A drive shaft flange is provided on the side of the plate belt coupling away from the engine.

[0009] The U-shaped mounting base includes a central rotating shaft and pulley mounting bases disposed on both sides of the central rotating shaft; the central rotating shaft is rotatably mounted on the pulley mounting bases via bearings; a pulley mounting flange is fixedly mounted on the central rotating shaft; and the side of the central rotating shaft closest to the plate belt coupling is fixedly mounted to the transmission shaft flange.

[0010] The drive pulley is fixedly connected to the pulley mounting flange by bolts.

[0011] A passive pulley is installed on the side of the crushing box, and the shaft of the passive pulley is connected to the crushing main shaft extending into the crushing box.

[0012] A drive belt, which is installed between the driving pulley and the driven pulley;

[0013] Preferably, the pulley mounting base includes a support base, an end cover, and a bearing housing, the bearing housing being fixedly connected to the end cover; the bearing housing has an oil injection hole for easy injection of lubricating oil; and the bottom of the bearing housing is fixedly connected to the support base.

[0014] Preferably, it also includes a reinforcing seat for further stabilizing the U-shaped mounting base, the reinforcing seat being fixedly connected to the tail of the two pulley mounting bases by bolts; the bottom of the reinforcing seat is fixedly connected to the outer shell of the crushing box.

[0015] Preferably, it also includes a transition wheel assembly disposed between the driving pulley and the driven pulley. The transition wheel assembly includes a transition wheel, which is mounted on the machine body via a transition wheel mounting seat. The transition wheel mounting seat has the same structure as the U-shaped mounting seat, and a reinforcing seat is also provided at the tail of the transition wheel mounting seat.

[0016] Preferably, the transition wheel mounting base has the same structure as the U-shaped mounting base.

[0017] Preferably, the transition wheel assembly further includes a hydraulic cylinder for pressing against the transition wheel mounting seat. The hydraulic cylinder is connected to a PLC-based intelligent control device, which monitors the belt pressure in real time through a pressure sensor installed on the transition wheel and automatically controls the extension and retraction of the hydraulic cylinder according to a preset pressure value.

[0018] Compared with existing technologies, the beneficial effects of this utility model are:

[0019] 1. Replace traditional rigid couplings with plate belt couplings. The elastic plate belt absorbs the vibrations generated by engine start-stop and crushing impacts, reducing rigid impacts on the transmission system and extending the service life of the engine, bearings and belts.

[0020] The rigid connection between the plate belt coupling and the transmission shaft flange ensures efficient power transmission while avoiding abnormal wear caused by coaxiality deviation.

[0021] 2. The drive pulley is mounted on the central shaft via a pulley mounting flange. The central shaft is rotatably mounted on the pulley mounting seats via bearings on both sides. This not only provides stable support for the drive pulley but also ensures even stress distribution on both bearings, increasing their service life. Simultaneously, the reinforcing seat is bolted to the tail of both pulley mounting seats and welded to the crushing box at the bottom, further enhancing the stability of the U-shaped mounting seat and ensuring the drive pulley remains stable during operation. During equipment operation, the U-shaped mounting seat and reinforcing seat effectively buffer and absorb significant stress caused by vibration and impact.

[0022] 3. The closed-loop control system of hydraulic cylinder + pressure sensor monitors belt tension in real time. The PLC intelligently adjusts the extension and retraction of the cylinder to automatically compensate for tension attenuation caused by belt wear or temperature changes, so as to always maintain a suitable tension and ensure stable transmission efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a transmission device for a tracked chassis hammer crusher proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the overall structure of the U-shaped mounting base in the transmission device of a tracked chassis hammer crusher proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the pulley mounting base structure in the transmission device of a tracked chassis hammer crusher.

[0026] 1-Engine; 2-Crushing box; 3-Plate belt coupling; 31-Drive shaft flange; 4-U-shaped mounting seat; 41-Central shaft; 42-Pulley mounting seat; 43-Pulley mounting flange; 5-Drive pulley; 6-Driven pulley; 7-Drive belt; 421-Support base; 422-End cover; 423-Bearing housing; 8-Reinforcing seat; 91-Transition pulley; 92-Transition pulley mounting seat; 93-Hydraulic cylinder. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Referring to the figure, this embodiment provides a transmission device for a tracked chassis hammer crusher. The crusher includes a machine body and an engine 1 and a crushing box 2 mounted on the machine body. A crushing transmission assembly is provided between the engine 1 and the crushing box 2. The crushing transmission assembly includes:

[0029] The plate belt coupling 3 is connected to the output shaft of the engine 1 for transmission. A transmission shaft flange 31 is provided on the side of the plate belt coupling 3 away from the engine.

[0030] U-shaped mounting base 4, the U-shaped mounting base 4 includes a central rotating shaft 41 and pulley mounting bases 42 disposed on both sides of the central rotating shaft; the central rotating shaft 41 is rotatably mounted on the pulley mounting base 42 by bearings; a pulley mounting flange 43 is fixedly mounted on the central rotating shaft 41; and the side of the central rotating shaft 41 near the plate belt coupling 3 is fixedly mounted to the transmission shaft flange 41.

[0031] The active pulley 5 is fixedly connected to the pulley mounting flange 43 by bolts.

[0032] A passive pulley 6 is installed on the side of the crushing box 2, and the shaft of the passive pulley 6 is connected to the crushing main shaft extending into the crushing box 2.

[0033] A drive belt 7 is installed between the driving pulley 5 and the driven pulley 6;

[0034] Preferably, the pulley mounting base 42 includes a support base 421, an end cap 422, and a bearing housing 423, wherein the bearing housing 423 is fixedly connected to the end cap 422; the bearing housing 423 is provided with an oil injection hole for easy injection of lubricating oil; and the bottom of the bearing housing 423 is fixedly connected to the support base 421.

[0035] Preferably, it also includes a reinforcing seat 8 for further stabilizing the U-shaped mounting base, the reinforcing seat 8 being fixedly connected to the tail of the two pulley mounting bases 42 by bolts; the bottom of the reinforcing seat 8 is fixedly connected to the outer shell of the crushing box 2.

[0036] Preferably, it also includes a transition wheel assembly disposed between the driving pulley 6 and the driven pulley 7. The transition wheel assembly includes a transition wheel 91, which is mounted on the machine body via a transition wheel mounting seat 92. The transition wheel mounting seat 92 has the same structure as the U-shaped mounting seat 4, and a reinforcing seat 8 is also provided at the tail of the transition wheel mounting seat 92.

[0037] Preferably, the transition wheel assembly further includes a hydraulic cylinder 93 for pressing against the transition wheel mounting seat. The hydraulic cylinder 93 is connected to a PLC-based intelligent control device. The control device monitors the belt pressure in real time through a pressure sensor installed on the transition wheel 91 and automatically controls the extension and retraction of the hydraulic cylinder according to a preset pressure value.

[0038] 1. Replace traditional rigid couplings with plate belt couplings. The elastic plate belt absorbs the vibrations generated by engine start-stop and crushing impacts, reducing rigid impacts on the transmission system and extending the service life of the engine, bearings and belts.

[0039] The rigid connection between the plate belt coupling and the transmission shaft flange ensures efficient power transmission while avoiding abnormal wear caused by coaxiality deviation.

[0040] 2. The drive pulley is mounted on the central shaft via a pulley mounting flange. The central shaft is rotatably mounted on the pulley mounting seats via bearings on both sides. This not only provides stable support for the drive pulley but also ensures even stress distribution on both bearings, increasing their service life. Simultaneously, the reinforcing seat is bolted to the tail of both pulley mounting seats and welded to the crushing box at the bottom, further enhancing the stability of the U-shaped mounting seat and ensuring the drive pulley remains stable during operation. During equipment operation, the U-shaped mounting seat and reinforcing seat effectively buffer and absorb significant stress caused by vibration and impact.

[0041] 3. The closed-loop control system of hydraulic cylinder + pressure sensor monitors belt tension in real time. The PLC intelligently adjusts the extension and retraction of the cylinder to automatically compensate for tension attenuation caused by belt wear or temperature changes, so as to always maintain a suitable tension and ensure stable transmission efficiency.

[0042] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be covered within the protection scope of this utility model.

[0043] Furthermore, it should be understood in the description of this utility model that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A transmission device for a tracked chassis hammer crusher, the crusher comprising a body and an engine and a crushing box mounted on the body, characterized in that, A crushing transmission assembly is provided between the engine and the crushing box, the crushing transmission assembly comprising: The plate belt coupling is connected to the output shaft of the engine. A drive shaft flange is provided on the side of the plate belt coupling away from the engine. The U-shaped mounting base includes a central rotating shaft and pulley mounting bases disposed on both sides of the central rotating shaft; the central rotating shaft is rotatably mounted on the pulley mounting bases via bearings; a pulley mounting flange is fixedly mounted on the central rotating shaft; and the side of the central rotating shaft closest to the plate belt coupling is fixedly mounted to the transmission shaft flange. The drive pulley is fixedly connected to the pulley mounting flange by bolts. A passive pulley is installed on the side of the crushing box, and the shaft of the passive pulley is connected to the crushing main shaft extending into the crushing box. A drive belt is installed between the driving pulley and the driven pulley.

2. The transmission device for a tracked chassis hammer crusher according to claim 1, characterized in that, The pulley mounting base includes a support base, an end cover, and a bearing housing, with the bearing housing fixedly connected to the end cover; the bearing housing has an oil injection hole for easy injection of lubricating oil; and the bottom of the bearing housing is fixedly connected to the support base.

3. The transmission device for a tracked chassis hammer crusher according to claim 2, characterized in that, It also includes a reinforcing seat for further stabilizing the U-shaped mounting base, the reinforcing seat being fixedly connected to the tail of the two pulley mounting bases by bolts; the bottom of the reinforcing seat is fixedly connected to the outer shell of the crushing box.

4. The transmission device for a tracked chassis hammer crusher according to claim 1, characterized in that, It also includes a transition wheel assembly disposed between the driving pulley and the driven pulley. The transition wheel assembly includes a transition wheel, which is mounted on the machine body via a transition wheel mounting seat. The transition wheel mounting seat has the same structure as the U-shaped mounting seat, and a reinforcing seat is also provided at the tail of the transition wheel mounting seat.

5. The transmission device for a tracked chassis hammer crusher according to claim 4, characterized in that, The transition wheel assembly also includes a hydraulic cylinder for pressing against the transition wheel mounting base. The hydraulic cylinder is connected to a PLC-based intelligent control device, which monitors the belt pressure in real time through a pressure sensor installed on the transition wheel and automatically controls the extension and retraction of the hydraulic cylinder according to a preset pressure value.

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