Eccentric wheel device with adjustable eccentric distance

Abstract

An eccentric wheel device capable of adjusting eccentric distance relates to the technical field of eccentric wheels and comprises a return distance adjusting cam, a return distance adjusting gear, a direct current push rod device and the like. The whole eccentric wheel device is driven to move up and down under the combined action of a return stroke adjusting gear, a return stroke adjusting rack and a flat key installed in a key groove, and when a rod hole in a return stroke adjusting fixing rod and a rod hole in a push rod sleeve reach the same axis position, a battery provides power for a direct-current push rod and a forward and reverse rotation controller. The forward and reverse rotation controller is connected with the direct-current push rod device, a push rod of the direct-current push rod device is reversely pushed to rod holes of the return stroke distance adjusting fixing rod and the push rod sleeve through the remote controller, and therefore the return stroke distance adjusting fixing rod is fixed, and the return stroke distance of the whole eccentric wheel is adjusted. And the return stroke distance of the eccentric wheel can be adjusted stage by stage.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric wheels, and more specifically to an eccentric wheel device with adjustable eccentricity. Background Art

[0002] The eccentric wheel device is mainly used for equipment that requires vibration operations, such as screening and sorting of grain harvesting, screening of sand and gravel, and vibration conveying operations. The working principle of the eccentric wheel device is mainly that the central transmission shaft deviates from the center of the eccentric wheel device, causing the wheel body to not rotate around its own central axis. This structural design allows the eccentric wheel to rotate, and the outer edge of the eccentric wheel is connected to the driven mechanism, and the centrifugal force of the eccentric wheel pushes the driven mechanism to reciprocate. However, when performing vibration operations, different operating conditions require different vibration frequencies and amplitudes. The process of replacing the eccentric wheel or the counterweight block is cumbersome and inefficient. For this reason, we propose an eccentric wheel device with adjustable eccentricity. Utility Model Content

[0003] The purpose of the utility model is to solve the problems of inconvenience and low efficiency in adjusting the return distance of the eccentric wheel in the prior art, and to propose an eccentric wheel device with adjustable return distance, which has the function of ensuring that the vibration frequency and amplitude of the eccentric wheel can be adjusted in real time when the machine is operating in different working conditions, thereby solving the problems raised by the above-mentioned background technology.

[0004] The utility model provides an eccentric wheel device with adjustable eccentricity, comprising:

[0005] A mounting plate, the mounting plate being arranged on a frame of the vibration device, and a transmission shaft being rotatably arranged on the mounting plate;

[0006] An eccentric wheel device, wherein at least two eccentric wheel devices are provided, and the eccentric wheel devices are connected along the left and right sides and have openings, wherein the openings allow the eccentric wheel devices to be distributedly installed on the periphery of the transmission shaft;

[0007] An adjusting mechanism, wherein the adjusting mechanism is disposed between the transmission shaft and the eccentric wheel device, and the adjusting mechanism can adjust the eccentric wheel device to move;

[0008] The locking mechanism is arranged between the transmission shaft and the eccentric wheel device, and the locking mechanism can lock the eccentric wheel device after moving.

[0009] Preferably: the eccentric wheel device comprises: an eccentric wheel housing, a return distance adjusting cam, a cam cover plate and an eccentric sleeve, the cam cover plate is distributed on the left and right sides of the return distance adjusting cam, the return distance adjusting cam is arranged at the inner end of the eccentric wheel housing, and the eccentric sleeve is arranged on the outer periphery of the return distance adjusting cam.

[0010] Preferably, the opening is rectangular and is opened along the left and right sides of the eccentric housing, the return distance adjusting cam and the cam cover plate, and the rod body of the transmission shaft passes through the openings of the eccentric housing, the return distance adjusting cam and the cam cover plate.

[0011] Preferably: the adjustment mechanism includes: a return distance adjustment rack and a return distance adjustment gear, the return distance adjustment rack is fixedly arranged on one side of the inner wall of the return distance adjustment cam in the vertical direction, and the return distance adjustment gear is arranged on the outer periphery of the transmission shaft, and the return distance adjustment gear and the return distance adjustment rack are meshed.

[0012] Preferably, a bearing and a flat key are provided between the transmission shaft and the return distance adjustment gear.

[0013] Preferably, the locking mechanism comprises a push rod fixing sleeve, a return distance adjustment fixing rod and a DC push rod device, wherein the push rod fixing sleeve is in a round tube shape and is fixedly arranged on the eccentric wheel housing, and the push rod fixing sleeve also extends into the eccentric wheel housing, and a first rod hole is linearly opened from both sides of the inner wall of the push rod fixing sleeve to the outer end surface;

[0014] The return distance adjustment fixing rod is a cylindrical structure, fixedly arranged on the transmission shaft, and the upper end of the return distance adjustment fixing rod extends through the interior of the push rod fixing sleeve, and a plurality of second rod holes are linearly opened on both sides of the outer wall of the return distance adjustment fixing rod;

[0015] The DC push rod device is distributed along a straight line on one side of the push rod fixing sleeve, and the push rod of the DC push rod device is arranged opposite to the first rod hole of the push rod fixing sleeve. When in use, the push rod of the DC push rod device can extend into the first rod hole and the second rod hole.

[0016] Preferably: the locking mechanism further comprises a battery and a forward and reverse controller, the forward and reverse controller is connected to the DC push rod device, and the forward and reverse controller can adjust the DC push rod device to move;

[0017] The battery is connected to the forward and reverse controller and the DC push rod device. When in use, the battery directly supplies power to the forward and reverse controller and the DC push rod device.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model discloses a scheme to adjust the return distance of the eccentric wheel in real time according to different vibration operation conditions, thereby changing the vibration frequency and amplitude of the machine, avoiding the complicated process of traditional replacement of the eccentric wheel and the replacement of the counterweight block, improving the convenience of adjusting the vibration frequency of the eccentric wheel device, and further improving the effect and operation quality of the vibration operation of the eccentric wheel device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the explosion structure of this scheme.

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of this scheme.

[0022] Figure 3 This is a partial perspective diagram of this scheme.

[0023] Figure 1-Figure 3 In the middle: 1-installation fixing plate; 2-eccentric wheel housing; 3-cam cover plate; 4-push rod fixing sleeve; 5-battery; 6-forward and reverse controller; 7-DC push rod device; 8-return distance adjustment rack; 9-return distance adjustment cam; 10-return distance adjustment fixing rod; 11-return distance adjustment gear; 12-bearing; 13-eccentric sleeve; 14-flat key; 15-transmission shaft. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments to clearly and completely describe the technical solution 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 those skilled in the art without creative work are within the scope of protection of the utility model.

[0025] As attached Figure 1 To Attachment Figure 3 As shown: an eccentric wheel device with adjustable eccentricity, including a mounting plate 1, a transmission shaft 15, an eccentric wheel device and an adjusting mechanism. Two mounting plates 1 are provided, and are symmetrically arranged at the left and right sides of the frame of the vibration equipment respectively. The left and right ends of the transmission shaft 15 are rotatably connected to the mounting plate 1 through a connecting shaft. At least two eccentric wheel devices are provided, and are distributed on the periphery of the transmission shaft 15. The adjusting mechanism is arranged inside the eccentric wheel device. When in use, the adjusting mechanism can adjust the eccentricity of the eccentric wheel.

[0026] In this embodiment, the eccentric wheel device includes: an eccentric wheel housing 2, a return distance adjustment cam 9, a cam cover plate 3 and an eccentric sleeve 13, wherein the cam cover plate 3 is arranged at the left and right sides of the return distance adjustment cam 9, and the return distance adjustment cam 9 is arranged at the inner end of the eccentric wheel housing 2, and the eccentric sleeve 13 is arranged at the outer periphery of the return distance adjustment cam 9. At the same time, the eccentric wheel housing 2, the return distance adjustment cam 9 and the cam cover plate 3 are provided with rectangular openings at both ends along the center, and the rod body of the transmission shaft 15 passes through the openings of the eccentric wheel housing 2, the return distance adjustment cam 9 and the cam cover plate 3.

[0027] In the above structure, the eccentric device can be installed on the outside of the transmission shaft 15 by openings formed in the eccentric housing 2 , the return distance adjusting cam 9 and the cam cover plate 3 .

[0028] In this embodiment, the adjustment mechanism includes: a return distance adjustment rack 8 and a return distance adjustment gear 11, wherein the return distance adjustment rack 8 is fixedly arranged on one side of the inner wall of the return distance adjustment cam 9 in the vertical direction, and the return distance adjustment gear 11 is arranged on the outer periphery of the transmission shaft 15, and the return distance adjustment gear 11 is meshed with the return distance adjustment rack 8. This design enables the return distance adjustment rack 8 to be applied with an upward or downward force when the transmission shaft 15 drives the return distance adjustment gear 11 to rotate forward or reverse, and the entire eccentric wheel device can be driven to move upward or downward by this force. If the eccentric wheel device moves downward, the eccentric distance between the eccentric sleeve 13 and the transmission shaft 15 can be enlarged; if the eccentric wheel device moves upward, the eccentric distance between the eccentric sleeve 13 and the transmission shaft 15 can be reduced. Based on this, if the eccentric distance changes, the vibration frequency of the eccentric wheel can be adjusted.

[0029] In addition, in order to maintain the connection stability between the return distance adjustment gear 11 and the transmission shaft 15, a bearing 12 and a flat key 14 are provided between the transmission shaft 15 and the return distance adjustment gear 11. The bearing 12 is responsible for supporting the transmission shaft 15 to reduce the friction during its rotation, while the flat key 14 is used to accurately fix the gear to ensure the effective transmission of torque.

[0030] like Figure 2 and Figure 3 In order to facilitate locking of the eccentric wheel device after movement, a locking mechanism is also provided between the transmission shaft 15 and the eccentric wheel device, and the locking mechanism includes: a push rod fixing sleeve 4, a return distance adjustment fixing rod 10, a forward and reverse controller 6, a DC push rod device 7 and a battery 5;

[0031] The push rod fixing sleeve 4 is in a round tube shape and is fixedly arranged on the eccentric housing 2. The push rod fixing sleeve 4 also extends into the eccentric housing 2. At the same time, a first rod hole is linearly opened from both sides of the inner wall of the push rod fixing sleeve 4 to the outer end surface.

[0032] The return distance adjustment fixing rod 10 is a cylindrical structure, fixedly arranged on the transmission shaft 15, and the upper end of the return distance adjustment fixing rod 10 also extends through the inside of the push rod fixing sleeve 4, and a plurality of second rod holes are linearly opened on both sides of the outer wall of the return distance adjustment fixing rod 10. For example, three second rod holes can be distributed in the up-down direction on the outer wall of the return distance adjustment fixing rod 10, and when the eccentric wheel housing 2 drives the push rod fixing sleeve 4 to move upward or downward, the first rod hole on the push rod fixing sleeve 4 is opposite to the second rod hole at the corresponding position;

[0033] The DC push rod device 7 is arranged along the straight line at the left or right side of the push rod fixing sleeve 4, and the push rod of the DC push rod device 7 is arranged opposite to the first rod hole of the push rod fixing sleeve 4. When in use, the push rod of the DC push rod device 7 can be inserted into the first rod hole and the second rod hole, and the return distance adjustment fixing rod 10 can be fixed after insertion. On the contrary, if the push rod of the DC push rod device 7 is away from the first rod hole and the second rod hole, the eccentric wheel device can be adjusted to move, thereby achieving the purpose of adjusting the eccentric distance.

[0034] The forward and reverse controller 6 is connected to the DC push rod device 7, allowing the user to conveniently operate the push rod of the DC push rod device 7 through a remote control to achieve its extension or retraction function. In addition, it should be noted that the forward and reverse controller 6 and the DC push rod device 7 used here are standard devices widely used in the market, such as electric push rod systems or servo electric cylinders. These devices are recognized as mature technologies in the industry, so they will not be described in depth here.

[0035] The battery 5 is connected to the forward and reverse controller 6 and the DC push rod 7. When in use, the battery 5 directly supplies power to the forward and reverse controller 6 and the DC push rod 7.

[0036] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that any technician familiar with this technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed in the present application, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An eccentric wheel device with adjustable eccentricity, characterized in that: include: A mounting plate (1), the mounting plate (1) being arranged on a frame of the vibration device, and a transmission shaft (15) being rotatably arranged on the mounting plate (1); An eccentric wheel device, wherein at least two eccentric wheel devices are provided, and the eccentric wheel devices are connected along the left and right sides and have openings, wherein the openings allow the eccentric wheel devices to be distributedly installed on the outer periphery of the transmission shaft (15); An adjusting mechanism, the adjusting mechanism being arranged between the transmission shaft (15) and the eccentric wheel device, and the adjusting mechanism being capable of adjusting the eccentric wheel device to move; A locking mechanism is provided between the transmission shaft (15) and the eccentric wheel device, and the locking mechanism can lock the eccentric wheel device after it moves.

2. The eccentric wheel device with adjustable eccentricity according to claim 1, characterized in that: The eccentric wheel device comprises: an eccentric wheel housing (2), a return distance adjusting cam (9), a cam cover plate (3) and an eccentric sleeve (13); the cam cover plate (3) is arranged on the left side and the right side of the return distance adjusting cam (9); the return distance adjusting cam (9) is arranged at the inner end of the eccentric wheel housing (2); and the eccentric sleeve (13) is arranged on the outer periphery of the return distance adjusting cam (9).

3. An eccentric wheel device with adjustable eccentricity according to any one of claims 1 or 2, characterized in that: The opening is rectangular and is opened along the left and right sides of the eccentric housing (2), the return distance adjustment cam (9) and the cam cover plate (3); the rod body of the transmission shaft (15) passes through the openings of the eccentric housing (2), the return distance adjustment cam (9) and the cam cover plate (3).

4. The eccentric wheel device with adjustable eccentricity according to claim 1, characterized in that: The adjustment mechanism comprises: a return distance adjustment rack (8) and a return distance adjustment gear (11); the return distance adjustment rack (8) is fixedly arranged on one side of the inner wall of the return distance adjustment cam (9) in the vertical direction; the return distance adjustment gear (11) is arranged on the outer periphery of the transmission shaft (15); and the return distance adjustment gear (11) and the return distance adjustment rack (8) are meshed.

5. The eccentric wheel device with adjustable eccentricity according to claim 4, characterized in that: A bearing (12) and a parallel key (14) are provided between the transmission shaft (15) and the return distance adjustment gear (11).

6. The eccentric wheel device with adjustable eccentricity according to claim 1, characterized in that: The locking mechanism comprises a push rod fixing sleeve (4), a return distance adjustment fixing rod (10) and a DC push rod device (7); the push rod fixing sleeve (4) is in a circular tube shape and is fixedly arranged on the eccentric wheel housing (2); the push rod fixing sleeve (4) also extends into the eccentric wheel housing (2); and first rod holes are linearly opened on both sides of the inner wall of the push rod fixing sleeve (4) to the outer end surface; The return distance adjustment fixing rod (10) is of cylindrical structure and is fixedly arranged on the transmission shaft (15). The upper end of the return distance adjustment fixing rod (10) extends through the interior of the push rod fixing sleeve (4). A plurality of second rod holes are linearly provided on both sides of the outer wall of the return distance adjustment fixing rod (10). The DC push rod device (7) is arranged along a straight line on one side of the push rod fixing sleeve (4), and the push rod of the DC push rod device (7) is arranged opposite to the first rod hole of the push rod fixing sleeve (4). When in use, the push rod of the DC push rod device (7) can extend into the first rod hole and the second rod hole.

7. An eccentric wheel device with adjustable eccentricity according to any one of claims 1 or 6, characterized in that: The locking mechanism further comprises a battery (5) and a forward and reverse controller (6), wherein the forward and reverse controller (6) is connected to a DC push rod device (7), and the forward and reverse controller (6) can adjust the DC push rod device (7) to move; The battery (5) is connected to the forward and reverse controller (6) and the DC push rod device (7). When in use, the battery (5) directly supplies power to the forward and reverse controller (6) and the DC push rod device (7).

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