Novel electric green clutch shear transmission gear box

Abstract

The utility model relates to the technical field of electric green shears, in particular to a novel electric green shear transmission gear box which comprises an outer cover, a gear tray is installed above the outer cover, a first gear frame is installed in the gear tray, and a first chain cover is installed above the gear tray. One main gear is installed between the gear tray and the first chain cover through a first gear frame, the other main gear is installed between the first chain cover and the second chain cover through a second gear frame, and transmission between the two main gears is facilitated through connection between the gear tray and the first chain cover. The gear tray and the first chain cover are matched with each other to locally partition and block a gear mounting area in the gear box, so that the possibility of influencing gears in other areas when local gears are damaged is reduced, the use safety of the device after mounting is guaranteed, and the use cost of the device is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of electric green shears, in particular to a novel electric green shear transmission gear box. Background Art

[0002] Hedge shears are also called hedge trimmers, which are divided into two categories: manual and motorized. Motorized hedge shears have excellent pruning performance, and electric hedge trimmers are a type of motorized hedge trimmers. The hedge trimmers mainly include a gasoline engine, a transmission mechanism, a handle, a switch and a blade mechanism, among which the transmission mechanism mainly includes a gear box and various types of transmission gears.

[0003] Most existing gearboxes are integrally cast and die-cast, which increases the production cost of the casting molds. After various types of gears are installed inside the gearbox, when a gear that is not separated by the gearbox area fails, the possibility of mutual influence between the gears is maximized. This means that when one gear fails, all gears within the area may be damaged, which increases the degree of failure when the device fails and also increases the maintenance cost.

[0004] Therefore, in view of the above problems, a new type of electric green shear transmission gearbox is proposed. Utility Model Content

[0005] In order to make up for the shortcomings of the existing technology and solve the problem that after various models of gears are installed inside the gear box, when the gears that are not separated by the gear box area fail, the possibility of mutual influence between the gears is maximized, so that when one gear fails, all the gears within the area may be damaged, which increases the degree of failure when the device fails and also increases the maintenance cost. A new electric green shear transmission gearbox is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a new type of electric green shear transmission gear box, including an outer cover, a gear tray is installed above the outer cover, a first gear rack is installed inside the gear tray, a first chain cover is installed above the gear tray, the lower part of the first chain cover is connected to the upper part of one side of the gear tray, a second gear rack is installed inside the first chain cover near one end edge, a second chain cover is installed above the first chain cover, an extrusion assembly is installed inside the first chain cover, and inclined tracks are symmetrically fixed near the center of the first chain cover.

[0007] Preferably, the extrusion assembly includes a central connecting rod, and elastic telescopic rods are symmetrically fixed to both ends of the central connecting rod. One end of the two elastic telescopic rods is fixed to a matching slider, and the two matching sliders are respectively slidably installed inside the inclined track.

[0008] Preferably, one end of the two mating sliders is provided with an extrusion roller via a shaft, and the extrusion roller is located above the first chain cover.

[0009] Preferably, a limiting convex strip is fixedly connected to the center of the bottom surface of the second chain cover, and the top surface groove of the central connecting rod fits and slides with the outer wall of the limiting groove.

[0010] Preferably, a plurality of limiting circular grooves are formed on the bottom surface of the limiting convex strip, and the plurality of limiting circular grooves are installed at equal distances along the extending direction of the limiting convex strip.

[0011] Preferably, a clamping rod groove is opened at the center of the bottom surface of the central connecting rod, and a threaded hole is opened at the center of the inner top surface of the clamping rod groove. A central clamping plate is clamped between the inner walls of the clamping rod groove, and limiting clamping rods are vertically fixed above both ends of the central clamping plate. The two limiting clamping rods are respectively engaged with each other on the inner walls of two of the limiting circular grooves.

[0012] Preferably, a fixing bolt is installed through the inner walls of the through hole of the center clamping plate, and the outer wall of one end of the fixing bolt is screwed to the inside of the threaded hole.

[0013] Beneficial effects of the utility model:

[0014] 1. In the utility model, the outer shell of the green shear transmission mechanism is formed by assembling and cooperating among the outer cover, the gear tray, the first chain cover and the second chain cover, and the gears and chains are installed, wherein one of the main gears is installed between the gear tray and the first chain cover through the first gear frame, and the other main gear is installed between the first chain cover and the second chain cover through the second gear frame, and the transmission between the two main gears is facilitated by the connection between the gear tray and the first chain cover, and the gear tray and the first chain cover cooperate with each other to locally partition and block the area where the gears are installed in the gear box, thereby reducing the possibility of affecting the gears in other areas when the local gears are damaged, thereby ensuring the safety of the device after installation and increasing the use cost of the device.

[0015] 2. In the utility model, the chain for transmission in the gear box can be installed through the mutual cooperation of the first chain cover and the second chain cover, and during the rotation of the chain, the extrusion assembly can increase the extrusion-type clamping effect on the chain through the mutual extrusion between the extrusion roller and the chain without affecting its rotation transmission, thereby preventing the possibility of collision and wear of the internal structures of the first chain cover and the second chain cover due to the swing of the chain during transmission due to the long chain, thereby increasing the rationality of the device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a split stereogram of the utility model;

[0019] Figure 3 It is a three-dimensional diagram of a part of the structure of the utility model;

[0020] Figure 4 It is a three-dimensional diagram of part of the first chain cover in the utility model;

[0021] Figure 5 It is a three-dimensional diagram of the central connecting rod in the utility model;

[0022] Figure 6 It is a three-dimensional diagram of the center card plate in the utility model;

[0023] Legend:

[0024] 1. Outer cover; 2. Gear tray; 21. First gear rack; 3. First chain cover; 31. Second gear rack; 4. Second chain cover; 5. Extrusion assembly; 32. Inclined track; 51. Center connecting rod; 52. Elastic telescopic rod; 53. Fitting slider; 54. Extrusion roller; 33. Limiting convex strip; 34. Limiting circular groove; 511. Clamping rod groove; 512. Threaded hole; 6. Center clamping plate; 61. Limiting clamping rod; 62. Fixing bolt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Specific examples are given below.

[0027] See also Figure 1 - Figure 6The utility model provides a new type of electric green shear transmission gear box, including an outer cover 1, a gear tray 2 is installed above the outer cover 1, a first gear frame 21 is installed inside the gear tray 2, a first chain cover 3 is installed above the gear tray 2, the lower part of the first chain cover 3 is connected to the upper part of one side of the gear tray 2, a second gear frame 31 is installed near one end edge of the first chain cover 3, a second chain cover 4 is installed above the first chain cover 3, an extrusion assembly 5 is installed inside the first chain cover 3, and an inclined track 32 is symmetrically fixed near the center of the first chain cover 3. The outer cover 1, the gear tray 2, the first chain cover 3 and the second The assembly and cooperation between the chain covers 4 form the outer shell of the green shear transmission mechanism, and the gears and chains are installed, wherein one of the main gears is installed between the gear tray 2 and the first chain cover 3 through the first gear frame 21, and the other main gear is installed between the first chain cover 3 and the second chain cover 4 through the second gear frame 31, and the transmission between the two main gears is facilitated by the connection between the gear tray 2 and the first chain cover 3, and the extrusion component 5 inside the gear tray 2 and the first chain cover 3 plays a role in extrusion stability for the chain subsequently installed therein, and the first chain cover 3 is installed on the extrusion component 5 by opening the inclined track 32;

[0028] like Figure 3 , Figure 4 and Figure 5 As shown, the extrusion assembly 5 includes a central connecting rod 51, and elastic telescopic rods 52 are symmetrically fixed at both ends of the central connecting rod 51, and one end of each of the two elastic telescopic rods 52 is fixedly connected to a matching slider 53, and the two matching sliders 53 are respectively slidably installed inside the inclined track 32. When the central connecting rod 51 is moved, the matching slider 53 is synchronously displaced, and the relative distance between the two inclined tracks 32 is continuously reduced, so that the two matching sliders 53 can be controlled to approach each other by moving the central connecting rod 51, and the central connecting rod 51 is connected to the matching slider 53 through the elastic telescopic rod 52, so that the elastic telescopic rod 52 can be adaptively elastically extended and retracted during the movement of the matching slider 53 following the elastic telescopic rod 52, thereby preventing the matching slider 53 and the inclined track 32 from generating movement obstruction, thereby increasing the rationality of the device structure;

[0029] like Figure 5 As shown, one end of the two engaging sliders 53 is equipped with a squeezing roller 54 through a shaft rod, and the squeezing roller 54 is located above the first chain cover 3. The squeezing assembly 5 contacts the chain through the squeezing roller 54, and the squeezing roller 54 moves with the movement of the engaging slider 53, so that the relative distance between the two squeezing rollers 54 can be close to or away from the engaging slider 53, so as to realize squeezing and fixing the chain within a certain range, and the way the squeezing roller 54 is installed on the shaft rod will not cause a large obstacle to the rotation of the chain;

[0030] like Figure 3 , Figure 4 and Figure 5 As shown, the center of the bottom surface of the second chain cover 4 is fixedly connected to the limiting convex strip 33, the top surface groove of the center connecting rod 51 fits and slides with the outer wall of the limiting groove, and the center connecting rod 51 fits with the limiting convex strip 33 through its upper groove, thereby increasing its stability during reciprocating movement;

[0031] like Figure 4 As shown, a plurality of limiting circular grooves 34 are provided on the bottom surface of the limiting convex strip 33, and the plurality of limiting circular grooves 34 are installed equidistantly along the extension direction of the limiting convex strip 33. The limiting circular grooves 34 are auxiliary structures provided on the limiting convex strip 33 for limiting the position of the central connecting rod 51;

[0032] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a clamping rod groove 511 is provided at the center of the bottom surface of the center connecting rod 51, and a threaded hole 512 is provided at the center of the inner top surface of the clamping rod groove 511. A center clamping plate 6 is clamped between the inner walls of the clamping rod groove 511, and limit clamping rods 61 are vertically fixed to the upper sides of both ends of the center clamping plate 6. The two limit clamping rods 61 are respectively clamped with each other on the inner walls of two of the limit circular grooves 34. When the center clamping plate 6 is clamped with the clamping rod groove 511, the limit clamping rod 61 is clamped with the limit circular groove 34, and the relative position of the center connecting rod 51 and the first chain cover 3 is limited, thereby ensuring the extrusion state of the chain by the extrusion assembly 5 at this time.

[0033] like Figure 5 and Figure 6 As shown, a fixing bolt 62 is installed through the inner wall of the through hole of the center clamping plate 6 , and the outer wall of one end of the fixing bolt 62 is screwed to the inside of the threaded hole 512 .

[0034] During operation, the central connecting rod 51 and the central clamping plate 6 can be relatively fixed by the threaded connection between the fixing bolt 62 and the threaded hole 512. When the length of the chain changes, the central connecting rod 51 and the central clamping plate 6 can be displaced by taking out the fixing bolt 62. After the position is adjusted, the limiting clamping rod 61 is clamped with the limiting circular groove 34 at another position, and the position of the extrusion assembly 5 and the central clamping plate 6 is continued to be fixed by the threaded connection between the fixing bolt 62 and the threaded hole 512.

[0035] Working principle: the assembly and cooperation between the outer cover 1, the gear tray 2, the first chain cover 3 and the second chain cover 4 form the outer shell of the green shear transmission mechanism, and the gears and chains are installed, wherein one of the main gears is installed between the gear tray 2 and the first chain cover 3 through the first gear frame 21, and the other main gear is installed between the first chain cover 3 and the second chain cover 4 through the second gear frame 31, and the transmission between the two main gears is facilitated by the connection between the gear tray 2 and the first chain cover 3. The extrusion component 5 inside the gear tray 2 and the first chain cover 3 plays a role in extrusion stability for the chains subsequently installed therein. When the center connecting rod 51 is moved, the mating slider 53 is displaced synchronously, and the relative distance between the two inclined tracks 32 is continuously reduced, so that the two mating sliders 53 can be controlled to approach each other by moving the center connecting rod 51, and the center connecting rod 51 is connected to the mating slider 53 through the elastic telescopic rod 52, which makes the mating slider 53 elastically follow the movement of the elastic telescopic rod 52 The telescopic rod 52 can be adaptively elastically extended and retracted, and the extrusion assembly 5 contacts the chain through the extrusion roller 54. The extrusion roller 54 moves following the movement of the matching slider 53, so that the relative distance between the two extrusion rollers 54 can be close to or away from each other with the matching slider 53, so as to realize the extrusion and fixation of the chain within a certain range. The center connecting rod 51 is engaged with the limiting convex strip 33 through the groove on it. When the center clamping plate 6 is engaged with the clamping rod groove 511, the limiting clamping rod 61 is engaged with the limiting circular groove 34, and the center connecting rod 51 is engaged with the limiting circular groove 34. The relative position of the rod 51 and the first chain cover 3 is limited, and the center connecting rod 51 and the center clamping plate 6 can be relatively fixed through the threaded connection between the fixing bolt 62 and the threaded hole 512. When the chain length changes, the center connecting rod 51 and the center clamping plate 6 can be displaced by removing the fixing bolt 62. After the position is adjusted, the limiting clamping rod 61 is engaged with the limiting circular groove 34 at another position, and the position of the extrusion assembly 5 and the center clamping plate 6 is continued to be fixed through the threaded connection between the fixing bolt 62 and the threaded hole 512.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A new type of electric green shear transmission gearbox, characterized by: The invention comprises an outer cover (1), a gear tray (2) is installed above the outer cover (1), a first gear frame (21) is installed inside the gear tray (2), a first chain cover (3) is installed above the gear tray (2), the lower part of the first chain cover (3) is connected to the upper part of one side of the gear tray (2), a second gear frame (31) is installed inside the first chain cover (3) near one end edge, a second chain cover (4) is installed above the first chain cover (3), an extrusion assembly (5) is installed inside the first chain cover (3), and an inclined track (32) is symmetrically fixed near the center of the first chain cover (3).

2. According to claim 1, a new type of electric green shear transmission gearbox is characterized in that: The extrusion assembly (5) comprises a central connecting rod (51), the two ends of the central connecting rod (51) are symmetrically fixed with elastic telescopic rods (52), one end of the two elastic telescopic rods (52) are fixed with a matching slider (53), and the two matching sliders (53) are respectively slidably mounted inside the inclined track (32).

3. A new type of electric green shear transmission gearbox according to claim 2, characterized in that: One end of each of the two engaging sliders (53) is provided with an extrusion roller (54) via a shaft rod, and the extrusion roller (54) is located above the first chain cover (3).

4. A new type of electric green shear transmission gearbox according to claim 3, characterized in that: A limiting convex strip (33) is fixedly connected at the center of the bottom surface of the second chain cover (4), and a groove on the top surface of the center connecting rod (51) slides in contact with the outer wall of the limiting groove.

5. The new electric green shear transmission gearbox according to claim 4 is characterized by: A plurality of limiting circular grooves (34) are provided on the bottom surface of the limiting convex strip (33), and the plurality of limiting circular grooves (34) are installed at equal distances along the extension direction of the limiting convex strip (33).

6. The new electric green shear transmission gearbox according to claim 5 is characterized by: A clamping rod groove (511) is provided at the center of the bottom surface of the central connecting rod (51), a threaded hole (512) is provided at the center of the inner top surface of the clamping rod groove (511), a central clamping plate (6) is clamped between the inner walls of the clamping rod groove (511), and limiting clamping rods (61) are vertically fixed above both ends of the central clamping plate (6), and two limiting clamping rods (61) are respectively clamped to the inner walls of two limiting circular grooves (34) with each other.

7. The new electric green shear transmission gearbox according to claim 6 is characterized by: A fixing bolt (62) is installed through the inner wall of the through hole of the central clamping plate (6), and the outer wall of one end of the fixing bolt (62) is screwed into the inside of the threaded hole (512).

Images