Transmission device of cement pavement crusher

Abstract

The utility model discloses a transmission device of a cement pavement crusher, and belongs to the technical field of road construction and maintenance. The device comprises a universal transmission shaft, a U-shaped mounting seat, a driving belt wheel, a driven belt wheel and a transmission belt, the mounting error of an engine and a crushing mechanism is compensated through the universal transmission shaft, and the U-shaped mounting seat is matched with an n-shaped reinforcing seat to stably support the driving belt wheel. The two follow-up wheels are arranged to adjust belt tension in real time, the follow-up wheel assembly dynamically abuts against the belt through the hydraulic oil cylinder, and the structural stability is enhanced by combining the positioning shaft reinforcing seat. The device effectively eliminates side pulling force and impact force borne by an engine, a rotating bearing and other parts, the equipment failure rate caused by the side pulling force and the impact force is reduced, and meanwhile the transmission efficiency of equipment is improved through the two-way tensioning design. The device is suitable for crawler walking type cement pavement crushers, and the stability and reliability of crushing operation are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the highway construction and maintenance technical field, specifically speaking, especially, a cement pavement crusher transmission device. BACKGROUND

[0002] In the field of highway construction and maintenance, the cement pavement crusher is a key equipment for processing old cement pavement. With the increase of traffic flow and the increase of service life, a large number of cement pavements appear problems such as damage and aging, which need to be crushed to pave new pavement or be used as road base material. The tracked walking type cement pavement crusher is widely used in actual engineering due to its good mobility and crushing performance, and the transmission device as its core component directly affects the overall performance of the equipment.

[0003] The traditional cement pavement crusher transmission device has many problems:

[0004] Engine and output shaft are easy to damage: the support structure of the engine output shaft is not perfect in the design of the previous transmission device. In the long-term working process, the engine output shaft is continuously pulled by the belt, lacks effective stable support, and after long-term use, the output shaft appears "looseness". This not only aggravates the wear of the output shaft and causes the sealing ring to be damaged and leak oil, but also causes the engine mounting seat to be broken, and even damages the engine body in severe cases, increases the maintenance cost and downtime, and affects the engineering progress.

[0005] Low transmission efficiency: the previous belt tensioning is mostly one-way tensioning, which reduces the contact area of the belt and the pulley during tensioning, thereby reducing the friction between the pulley and the belt, and the slipping phenomenon is easy to occur. When the load of the crusher changes or the belt is worn to a certain extent, the transmission stability between the belt and the pulley is affected, the power transmission efficiency is reduced, the power of the engine cannot be fully utilized, and the crushing efficiency is low.

[0006] Lack of intelligent adjustment: the traditional transmission device cannot monitor and automatically adjust the tension of the belt in real time. In actual work, the tension of the belt changes with the operation of the equipment, temperature changes and the wear of the belt itself. If the belt tension is too large, it will increase the wear of the belt and the pulley, and shorten the service life; if the tension is too small, it will cause the belt to slip and affect the transmission effect. The traditional device can only rely on regular manual inspection and manual adjustment, which is not only low in efficiency, but also difficult to ensure that the belt is always in the best working state.

[0007] With the increasing requirements of engineering construction on the working efficiency, stability and reliability of the cement pavement crusher, the existing transmission device has been difficult to meet the needs. Utility model content

[0008] The utility model discloses a cement pavement crusher transmission device that solves the shortcomings in the prior art, and the application is a further improvement on the original cement pavement crusher of the applicant, and the related patents include "202420439213.3 a cement pavement crusher rear-mounted leveling device", "202420529979.0 a crushing device of cement pavement crusher", "202420365864.2 a cement pavement crusher leveling mechanism" and the like, which are further improved, and the crusher comprises a machine body, an engine and a crushing mechanism installed on the machine body, and a transmission assembly for driving the crushing mechanism, and the transmission assembly comprises a universal transmission shaft fixedly installed with an output shaft of the engine, a transmission shaft flange plate fixedly arranged on the side of the universal transmission shaft away from the engine, a U-shaped mounting seat comprising a central rotating shaft and a belt pulley mounting seat arranged on the two sides of the central rotating shaft, a belt pulley mounting flange fixedly installed on the central rotating shaft, a support base fixedly connected to the bottom of the bearing shell of the belt pulley mounting seat, a driving belt pulley fixedly connected to the belt pulley mounting flange through bolts, a driven belt pulley installed on the side of the crushing device support arm, a transmission belt installed between the driving belt pulley and the driven belt pulley, and a Π-shaped reinforcing seat for further stabilizing the U-shaped mounting seat.

[0009] The universal transmission shaft is fixedly installed with the output shaft of the engine, and the transmission shaft flange plate is fixedly arranged on the side of the universal transmission shaft away from the engine.

[0010] The U-shaped mounting seat comprises a central rotating shaft and a belt pulley mounting seat arranged on the two sides of the central rotating shaft, the central rotating shaft is rotatably installed on the belt pulley mounting seat through a bearing, the belt pulley mounting flange is fixedly installed on the central rotating shaft, the side of the central rotating shaft close to the universal transmission shaft is fixedly installed with the transmission shaft flange plate, the belt pulley mounting seat comprises a support base, an end cover and a bearing shell, the bearing shell is fixedly connected with the end cover, the oil injection hole for conveniently injecting lubricating oil is formed in the bearing shell, and the support base is fixedly connected to the bottom of the bearing shell.

[0011] The driving belt pulley is fixedly connected to the belt pulley mounting flange through bolts.

[0012] The driven belt pulley is installed on the side of the crushing device support arm, and the rotating shaft of the driven belt pulley is in transmission connection with the crushing main shaft.

[0013] The transmission belt is installed between the driving belt pulley and the driven belt pulley.

[0014] Preferably, the Π-shaped reinforcing seat for further stabilizing the U-shaped mounting seat is further provided, the Π-shaped reinforcing seat is fixedly connected with the tail portions of the two belt pulley mounting seats through bolts, and the bottom of the Π-shaped reinforcing seat is fixedly connected with the crushing device support arm.

[0015] Preferably, an over wheel is arranged between the driving pulley and the driven pulley, the over wheel is mounted on the machine body through an over wheel mounting seat, the over wheel mounting seat has the same structure as the U-shaped mounting seat, and a Π-shaped reinforcing seat is arranged at the tail of the over wheel mounting seat.

[0016] Preferably, a following wheel assembly is arranged between the driving pulley and the driven pulley, the following wheel assembly comprises a positioning shaft fixedly welded on a crushing device supporting arm, a following wheel mounting seat is rotatably mounted on the positioning shaft, and a following wheel is mounted on the following wheel mounting seat.

[0017] Preferably, the following wheel mounting seat has the same structure as the U-shaped mounting seat.

[0018] Preferably, the following wheel assembly further comprises a hydraulic oil cylinder for pressing the following wheel mounting seat, and the hydraulic oil cylinder can monitor and adjust the belt tension in real time when in action, so that the belt tension can always be kept appropriate.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The side pulling force and impact force borne by the engine, the rotating bearing and other components are effectively reduced, the equipment failure rate caused by the side pulling force and the impact force is greatly reduced, and the stability and reliability of the equipment operation are ensured. Meanwhile, the bidirectional tensioning design improves the transmission efficiency of the equipment. Specifically,

[0021] 1. Stable support of the U-shaped mounting seat and the Π-shaped reinforcing seat: the driving pulley is mounted on the central rotating shaft through a belt pulley mounting flange, the central rotating shaft is rotatably mounted on the belt pulley mounting seat through two side bearings, the driving pulley is stably supported, and the two side bearings are uniformly stressed, so that the service life of the bearings is increased. Meanwhile, the Π-shaped reinforcing seat is fixedly connected with the tail of the two belt pulley mounting seats through bolts, and the bottom is fixedly welded with the crushing device supporting arm, so that the stability of the U-shaped mounting seat is further increased, and the driving pulley is kept stable during operation. During the operation of the equipment, the U-shaped mounting seat and the Π-shaped reinforcing seat can effectively buffer and absorb the large stress caused by vibration, impact and the like. Meanwhile, the engine and the driving pulley are connected through a universal telescopic transmission shaft, the installation error and relative displacement between the engine and the crushing mechanism can be compensated, the output shaft of the engine is prevented from being excessively pulled and the impact force transmitted by the belt, the adverse effect on the output shaft of the engine is reduced, and the output shaft is prevented from being damaged. Thus, the service life of the engine is prolonged, the maintenance cost and downtime are reduced, and the smooth progress of the project is ensured.

[0022] 2. The intelligent two-way belt tensioning design: when the device starts, the hydraulic cylinder drives the upper follow-up wheel to press down on the belt, increasing the contact area of the driving wheel and the transition wheel with the belt, at the same time, the lower follow-up wheel presses up on the belt, increasing the contact area of the driving wheel and the driven wheel with the belt, this design greatly increases the friction between the pulley and the belt, effectively avoiding the occurrence of belt slip. The hydraulic cylinder is connected with the intelligent control device based on PLC, the control device monitors the belt tension in real time through the tension sensor, and automatically controls the extension and retraction action of the hydraulic cylinder according to the preset tension value, which can adjust the tension of the transmission belt in real time, so that it always maintains a suitable tensioning degree. Even in the case of changes in the load of the crusher or a certain degree of wear of the belt, the stable transmission between the belt and the pulley can be ensured, the power of the engine can be fully utilized, and the crushing efficiency can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model proposes a whole structure schematic diagram of cement pavement crusher transmission device;

[0024] Figure 2 The utility model proposes a U type mounting seat structure schematic diagram in cement pavement crusher transmission device;

[0025] Figure 3 The utility model proposes a belt pulley mounting seat structure schematic diagram (without end cover) in cement pavement crusher transmission device.

[0026] In the figure, 1 is a universal transmission shaft, 2 is a transmission shaft flange plate.

[0027] 3-U type mounting seat, 31 is a central rotating shaft, 32 is a belt pulley mounting seat, 33 is a belt pulley mounting flange, 321 is a support base, 322 is an end cover, 323 is a bearing shell.

[0028] 4 is a driving pulley, 5 is a driven pulley, 6 is a transmission belt, 7 is a Π type reinforcing seat, 8 is a transition wheel, 81 is a transition wheel mounting seat.

[0029] 9 is a follow-up wheel assembly, 91 is a positioning shaft, 92 is a follow-up wheel mounting seat, 93 is a follow-up wheel, 94 is a hydraulic cylinder, 95 is a positioning shaft reinforcing seat. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0031] Referring to the drawings, the present embodiment provides a cement pavement crusher transmission device, which is applied to a caterpillar walking type cement pavement crusher, the crusher comprising a machine body, an engine and a crushing mechanism installed on the machine body, and a transmission assembly for driving the crushing mechanism, the transmission assembly comprising:

[0032] A universal transmission shaft 1 is fixedly installed with an output shaft of the engine; and a transmission shaft flange plate 2 is fixedly arranged on a side of the universal transmission shaft 1 away from the engine;

[0033] A U-shaped mounting seat 3 comprises a central rotating shaft 31 and a belt pulley mounting seat 32 arranged on both sides of the central rotating shaft 31; the central rotating shaft 31 is rotatably installed on the belt pulley mounting seat 32 through a bearing; a belt pulley mounting flange 33 is fixedly installed on the central rotating shaft 31; the central rotating shaft 31 is fixedly installed with the transmission shaft flange plate 2 on a side close to the universal transmission shaft 1; the belt pulley mounting seat 32 comprises a supporting base 321, an end cover 322 and a bearing shell 323, the bearing shell 323 is fixedly connected with the end cover 322; the bearing shell 323 is provided with an oil injection hole for injecting lubricating oil; the bottom of the bearing shell 323 is fixedly connected with the supporting base 321;

[0034] A driving belt pulley 4 is fixedly connected with the belt pulley mounting flange 33 through bolts;

[0035] A driven belt pulley 5 is installed on a side of a crushing device supporting arm, and a rotating shaft of the driven belt pulley 5 is in transmission connection with a crushing main shaft;

[0036] A transmission belt 6 is installed between the driving belt pulley 4 and the driven belt pulley 5.

[0037] Further, a Π-shaped reinforcing seat 7 for further stabilizing the U-shaped mounting seat 3 is further provided, the Π-shaped reinforcing seat 7 is fixedly connected with tail portions of the two belt pulley mounting seats 32 through bolts; and the Π-shaped reinforcing seat 7 is fixedly connected with the crushing device supporting arm together at the bottom.

[0038] Further, an over wheel 8 is further provided between the driving belt pulley 4 and the driven belt pulley 5, the over wheel 8 is installed on the machine body through an over wheel mounting seat 81, the over wheel mounting seat 81 has the same structure as the U-shaped mounting seat, and a Π-shaped reinforcing seat is also arranged at a tail portion of the over wheel mounting seat 81.

[0039] Further, a following wheel assembly 9 is further provided between the driving belt pulley 4 and the driven belt pulley 5, the following wheel assembly 9 comprises a positioning shaft 91 fixedly welded on the crushing device supporting arm, a following wheel mounting seat 92 is rotatably installed on the positioning shaft 91, and a following wheel 93 is installed on the following wheel mounting seat.

[0040] Further, the following-up wheel mounting seat 92 is same as the U-shaped mounting seat structure.

[0041] Further, the following-up wheel assembly 9 further comprises a hydraulic cylinder 94 for pressing the following-up wheel mounting seat, and the hydraulic cylinder 94 is connected with a PLC-based intelligent control device.

[0042] Further, the positioning shaft 91 is provided with a positioning shaft reinforcing seat 95 away from one side of the following-up wheel 93, and the positioning shaft reinforcing seat 95 is fixedly installed on the crushing device supporting arm.

[0043] In addition, the surface of the following-up wheel can be coated with a polyurethane rubber layer with high friction coefficient, which can effectively increase the friction with the belt and reduce the wear of the belt.

[0044] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

[0045] In addition, in the description of the present application, it should be understood that the terms indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a specific orientation, structure and operation, therefore it cannot be understood as a limitation of the present application.

[0046] Furthermore, in the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A cement pavement crusher transmission device applied to a crawler walking cement pavement crusher, the crusher comprising a machine body, an engine and a crushing mechanism installed on the machine body, and a transmission assembly for driving the crushing mechanism, the transmission assembly comprising: a universal transmission shaft (1) fixedly installed with an output shaft of the engine; and a transmission shaft flange (2) fixedly arranged on a side of the universal transmission shaft (1) away from the engine; a U-shaped mounting seat (3) comprising a central rotating shaft (31) and belt pulley mounting seats (32) arranged on both sides of the central rotating shaft (31); the central rotating shaft (31) is rotatably installed on the belt pulley mounting seats (32) through bearings; a belt pulley mounting flange (33) is fixedly installed on the central rotating shaft (31); and the central rotating shaft (31) is fixedly installed with the transmission shaft flange (2) on a side close to the universal transmission shaft (1); the belt pulley mounting seat (32) comprises a support base (321), an end cover (322) and a bearing shell (323), the bearing shell (323) is fixedly connected with the end cover (322); the bearing shell (323) is provided with an oil injection hole for facilitating injection of lubricating oil; and the bottom of the bearing shell (323) is fixedly connected with the support base (321); a driving belt pulley (4) is fixedly connected with the belt pulley mounting flange (33) through bolts; a driven belt pulley (5) is installed on a side of a crushing device support arm, and a rotating shaft of the driven belt pulley (5) is in transmission connection with a crushing main shaft; a transmission belt (6) is installed between the driving belt pulley (4) and the driven belt pulley (5); a Π-shaped reinforcing seat (7) is further arranged for further stabilizing the U-shaped mounting seat (3), the Π-shaped reinforcing seat (7) is fixedly connected with tail portions of the two belt pulley mounting seats (32) through bolts; and the Π-shaped reinforcing seat (7) is fixedly connected with the crushing device support arm at the bottom. An over wheel (8) is further arranged between the driving belt pulley (4) and the driven belt pulley (5), the over wheel (8) is installed on the machine body through an over wheel mounting seat (81), the over wheel mounting seat (81) has the same structure as the U-shaped mounting seat, and a Π-shaped reinforcing seat is further arranged at a tail portion of the over wheel mounting seat (81). A follow-up wheel assembly (9) is further arranged between the driving belt pulley (4) and the driven belt pulley (5), the follow-up wheel assembly (9) comprises a positioning shaft (91) fixedly welded on the crushing device support arm, a follow-up wheel mounting seat (92) rotatably installed on the positioning shaft (91), and a follow-up wheel (93) installed on the follow-up wheel mounting seat. The follow-up wheel mounting seat (92) has the same structure as the U-shaped mounting seat. The follow-up wheel assembly (9) further comprises a hydraulic oil cylinder (94) for pressing the follow-up wheel mounting seat, the hydraulic oil cylinder is connected with a PLC-based intelligent control device, the control device monitors the belt tension in real time through a tension sensor, and automatically controls the extension and retraction of the hydraulic oil cylinder according to a preset tension value. ​ ​ 2. A cement pavement breaker transmission according to claim 1, characterized in that, ​ 3. A cement pavement breaker transmission according to claim 1, characterized in that, ​ 4. A cement pavement breaker transmission according to claim 3, characterized in that, ​ 5. A cement pavement breaker transmission according to claim 4, characterized in that, ​ 6. A cement pavement breaker transmission as defined in claim 4 wherein, ​

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