Eccentric device convenient for adjusting exciting force and phase angle

Abstract

The utility model discloses an eccentric device convenient to adjust exciting force and phase angle, which relates to the technical field of vibration devices and comprises a motor body, an upper faceplate and a lower faceplate, the upper output end and the lower output end of the motor body are connected with a rotating shaft, and the upper faceplate and the lower faceplate are mounted on the rotating shaft. An upper eccentric assembly is installed on the upper disc chuck, a lower eccentric assembly is installed on the lower disc chuck, and disc chuck clamping grooves are formed in the upper disc chuck and the lower disc chuck in a circumferential array mode. According to the eccentric device convenient to adjust the exciting force and the phase angle, the faceplate clamping grooves with the angle display function are formed in the upper faceplate and the lower faceplate, so that a user can adjust the angle between the two balancing weights according to displayed numerical values conveniently, the exciting force needing to be used is obtained through adjustment, and meanwhile the exciting force and the phase angle can be adjusted conveniently. The phase angle of the vibrator can be increased or decreased by adjusting the positions of the upper eccentric assembly and the lower eccentric assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration devices, and more specifically to an eccentric device which is convenient for adjusting exciting force and phase angle. Background Art

[0002] Vibration motors are widely used in various processing industries, and are often used as the power source for equipment such as vibrating screens, tamping machines, and crushers. Eccentric weights are installed on the upper and lower ends of the motor to convert the motor's rotational motion into horizontal, vertical, and inclined three-dimensional motion, and then transmit this motion to the equipment.

[0003] In the Chinese utility model patent application No.: 202220867453.4, there is disclosed an eccentric block accessory for a vibration motor, which is installed in conjunction with the rotating shaft and eccentric block of the vibration motor, wherein the eccentric block is provided with a mounting shaft hole, and the upper and lower sides of the mounting shaft hole are respectively provided with a sliding through hole and a positioning groove, the fixing seat is fixedly connected to the top of the eccentric block by a fastening bolt, and the upper part of the fixing seat is fixedly connected with a fixing key inserted in the sliding through hole, the rotating shaft is provided with a positioning key and a fixing groove respectively nested with the positioning groove and the fixing key, the limiting plate is fixedly connected to the rotating shaft, and the limiting plate is fixedly connected with a plurality of sets of fixing screws. The eccentric block accessory for the vibration motor has the effect of facilitating the installation of the eccentric block on the motor drive shaft, but because the eccentric block is a whole, it cannot play a role in regulating the exciting force of the motor when it is working, and its scope of use is limited.

[0004] Some devices install adjustable eccentric blocks on the output ends of the upper and lower ends of the upright motor, and adjust the exciting force by adjusting the angle between the two eccentric blocks. Increasing the angle between the two eccentric blocks can reduce the exciting force of the vibrator, and vice versa. For example, a vibration adjustment device is disclosed in Chinese utility model patent application No.: 202122682659.8. The eccentric block on this device is fixed on a cylindrical shockproof part. The shockproof part is usually fixed to the output end of the motor with bolts. However, since the vibration motor will generate vibration when working, the bolts are prone to loosening, which affects the normal use of the vibration device.

[0005] Therefore, it is necessary to propose an eccentric device that is convenient for adjusting the exciting force and phase angle to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be solved

[0007] The purpose of the utility model is to solve the problems raised in the above background technology and to provide an eccentric device which is convenient for adjusting the exciting force and the phase angle.

[0008] (II) Technical solution

[0009] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0010] An eccentric device convenient for adjusting the exciting force and phase angle comprises a motor body, an upper faceplate and a lower faceplate, wherein the upper and lower output ends of the motor body are connected with a rotating shaft, the upper faceplate and the lower faceplate are mounted on the rotating shaft, an upper eccentric assembly is mounted on the upper faceplate, a lower eccentric assembly is mounted on the lower faceplate, a faceplate slot in a circumferential array is provided on the upper faceplate and the lower faceplate, the upper eccentric assembly is composed of a pair of upper counterweight blocks that cooperate with each other, the lower eccentric assembly is composed of a pair of lower counterweight blocks that cooperate with each other, and a card plate that is clamped in the faceplate slot is mounted on the bottom of the upper counterweight block and the lower counterweight block;

[0011] The internal thread of the rotating shaft is connected with a stud, the end of the rotating shaft is connected with a lower anti-skid pad, the outer wall of the stud is sequentially sleeved with a top cover, an upper anti-skid pad and a sleeve, and the stud installs the upper anti-skid pad and the sleeve on the rotating shaft through the top cover;

[0012] The head of the stud is provided with an inserting cavity, a trigger plate is slidably connected to the inserting cavity, a cavity is provided inside the rotating shaft, a connecting rod extending into the cavity is connected to the bottom of the trigger plate, a limit plate is slidably connected to the cavity, the top of the limit plate contacts the stud and the connecting rod, and spline parts meshing with each other are provided on the limit plate and the stud;

[0013] A first spring in contact with the trigger plate is installed in the plug-in cavity, and a second spring that pushes the limit plate and the stud to fit together is installed in the cavity;

[0014] The upper faceplate and the upper eccentric assembly and the lower faceplate and the lower eccentric assembly are all sleeved outside the sleeve.

[0015] Preferably, a compression chamber is provided inside the upper anti-slip pad, and the compression chamber is composed of an inclined portion and a strip portion, and the inclined portion is arranged on a side close to the inner annular surface.

[0016] Preferably, the upper anti-slip pad and the lower anti-slip pad are provided with anti-slip stripes on opposite sides thereof.

[0017] Preferably, a washer is sleeved on the outer wall of the stud.

[0018] Preferably, the upper face disc and the lower face disc are provided with scales corresponding to the angles of the face disc slots.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The device is provided with faceplate slots with angle display inside the upper faceplate and the lower faceplate, so that the user can adjust the angle between the two counterweights according to the displayed value, thereby adjusting the required exciting force. At the same time, the phase angle of the vibrator can be increased or decreased by adjusting the position of the upper eccentric assembly and the lower eccentric assembly.

[0021] 2. The device is provided with a limit plate component with a spline portion. The limit plate is pushed by the second spring to come into contact with the bottom of the stud, thereby limiting the rotation of the stud through the spline portion, preventing the stud from loosening when the device is in use, and increasing the stability of the device.

[0022] 3. The device sets a compression chamber inside the upper anti-slip pad. When compressed, the inclined portion will push the side wall of a part of the upper anti-slip pad to contact the inner wall of the counterweight block, thereby supporting the counterweight block from the inside and preventing the counterweight block from sliding on the sleeve along the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a three-dimensional schematic diagram of the connection structure between the upper eccentric component and the upper faceplate in the utility model;

[0025] Figure 3 It is a schematic diagram of the connection structure between the lower eccentric component and the lower faceplate in the utility model;

[0026] Figure 4 It is a schematic diagram of the connection structure between the upper counterweight block and the clamping plate in the utility model;

[0027] Figure 5 It is a cross-sectional schematic diagram of the connection structure between the rotating shaft and the stud in the utility model;

[0028] Figure 6 It is a schematic diagram of the change of the compression chamber in the utility model;

[0029] Figure 7 It is a three-dimensional schematic diagram of the connection structure between the limit plate and the spline part in the utility model.

[0030] Reference numerals:

[0031] 101. Motor body; 102. Upper faceplate; 103. Lower faceplate; 104. Rotating shaft; 105. Upper eccentric assembly; 106. Lower eccentric assembly; 107. Faceplate slot; 108. Upper counterweight; 109. Lower counterweight; 110. Clamping plate; 111. Stud; 112. Lower anti-skid pad; 113. Top cover; 114. Upper anti-skid pad; 115. Sleeve; 116. Plug-in cavity; 117. Trigger plate; 118. Cavity; 119. Connecting rod; 120. Limiting plate; 121. Spline portion; 122. First spring; 123. Second spring; 124. Compression cavity; 125. Inclined portion; 126. Strip portion; 127. Washer. DETAILED DESCRIPTION

[0032] 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 in 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.

[0033] See also Figure 1-7 , an eccentric device for adjusting the exciting force and phase angle, comprising a motor body 101, an upper faceplate 102 and a lower faceplate 103, the motor body 101 is a dual-axis motor, the upper faceplate 102 is mounted on the top rotating shaft 104, the lower faceplate 103 is mounted on the bottom rotating shaft 104, the upper and lower output ends of the motor body 101 are connected to the rotating shaft 104, the upper faceplate 102 and the lower faceplate 103 are mounted on the rotating shaft 104, the upper faceplate 102 and the lower faceplate 103 are provided with a faceplate slot 107, the faceplate slot 107 is composed of a plurality of adjustment slots, reference Figure 2 and Figure 3 , a plurality of snap-in positions are arranged in each adjusting groove, an upper eccentric assembly 105 is installed on the upper faceplate 102, a lower eccentric assembly 106 is installed on the lower faceplate 103, a circumferential array of faceplate snap-in slots 107 are provided on the upper faceplate 102 and the lower faceplate 103, the upper eccentric assembly 105 is composed of a pair of upper counterweight blocks 108 that cooperate with each other, and the lower eccentric assembly 106 is composed of a pair of lower counterweight blocks 109 that cooperate with each other, and a through hole is arranged at one end of the upper counterweight block 108 and the lower counterweight block 109 away from the card plate 110, and the through hole is in an elongated strip shape, and the diameter of the through hole is slightly larger than the diameter of the sleeve 115, when the card plate 110 is located in the snap-in slot, the sleeve 115 is located at the end of the through hole away from the card plate 110, and the bottom of the upper counterweight block 108 and the lower counterweight block 109 are both installed with a card plate 110 that is snap-in to the faceplate snap-in slot 107;

[0034] refer to Figure 5, the internal thread of the rotating shaft 104 is connected with a stud 111, and a hole is opened inside the stud 111 for the passage of the connecting rod 119. The end of the rotating shaft 104 is connected with a lower anti-skid pad 112. The lower anti-skid pad 112 and the upper anti-skid pad 114 are both provided with anti-skid stripes for increasing the friction when connected with the upper faceplate 102 and the lower faceplate 103. The anti-skid stripes are not shown in the figure. The outer wall of the stud 111 is sequentially sleeved with a top cover 113, an upper anti-skid pad 114 and a sleeve 115. The length of the sleeve 115 is shorter than the height of the lower faceplate 103 and the lower eccentric assembly 106. The stud 111 installs the upper anti-skid pad 114 and the sleeve 115 on the rotating shaft 104 through the top cover 113;

[0035] refer to Figure 5 and Figure 7 The head of the stud 111 is provided with an inserting cavity 116, and the shape of the inserting cavity 116 is the same as that of the hexagonal wrench, so that the hexagonal wrench can be inserted therein. The top of the inserting cavity 116 is provided with a retaining edge to prevent the trigger plate 117 from being separated from the plug-in cavity 116. The trigger plate 117 is connected to the inserting cavity 116 for sliding up and down. A cavity 118 is provided inside the rotating shaft 104. The second spring 123 in the cavity 118 is used to push the limit plate 120 to fit together with the stud 111. The bottom of the trigger plate 117 is connected to A connecting rod 119 extending into the cavity 118 is connected to a limit plate 120 which is slidable up and down in the cavity 118. The limit plate 120 is polygonal, so that the limit plate 120 can move up and down in the cavity 118 but cannot rotate, and can limit the rotation of the stud 111 through the spline portion 121 on the top. The top of the limit plate 120 contacts the stud 111 and the connecting rod 119, and the limit plate 120 and the stud 111 are provided with spline portions 121 which are meshed and connected with each other;

[0036] refer to Figure 5 A first spring 122 in contact with the trigger plate 117 is installed in the plug-in cavity 116. The first spring 122 pushes the trigger plate 117 to cover the plug-in cavity 116 to prevent foreign matter from entering. A second spring 123 that pushes the limit plate 120 and the stud 111 to fit together is installed in the cavity 118. The second spring 123 is used to push the limit plate 120 and the stud 111 to fit together.

[0037] The upper faceplate 102 and the upper eccentric assembly 105 and the lower faceplate 103 and the lower eccentric assembly 106 are all sleeved on the outside of the sleeve 115, and the sleeve 115 is sleeved in the through holes on the upper faceplate 102 and the upper eccentric assembly 105, or in the through holes on the lower faceplate 103 and the lower eccentric assembly 106.

[0038] Specifically, refer to Figure 6A compression chamber 124 is provided inside the upper anti-slip pad 114. When the gap between the lower anti-slip pad 112 and the top cover 113 becomes smaller, the compression chamber 124 in the upper anti-slip pad 114 will be compressed. When compressed, the upper and lower inner walls of the strip portion 126 will fit together, and the inner wall of the inclined portion 125 will be squeezed out through the inclined surface, thereby fitting together with the inner wall of the upper eccentric assembly 105 or the lower eccentric assembly 106. The compression chamber 124 is composed of the inclined portion 125 and the strip portion 126, and the inclined portion 125 is arranged on the side close to the inner annular surface.

[0039] Specifically, the upper anti-skid pad 114 and the lower anti-skid pad 112 are provided with anti-skid stripes on opposite sides thereof to increase the friction during contact.

[0040] Specifically, refer to Figure 5 A washer 127 is also sleeved on the outer wall of the stud 111 to provide it with a pre-tightening force.

[0041] Specifically, refer to Figure 2 and Figure 3 The upper faceplate 102 and the lower faceplate 103 are provided with scales corresponding to the angles of the faceplate slots 107, and a hole is provided on the upper eccentric component 105 to facilitate observing the angle between the two upper counterweights 108 through the hole.

[0042] In this embodiment, the motor body 101 is installed in a screening machine or a vibrating device, and an upper faceplate 102 and a lower faceplate 103 are installed on the rotating shaft 104 at the upper and lower ends of the motor body 101, an upper eccentric component 105 is installed on the upper faceplate 102, and a lower eccentric component 106 is installed on the lower faceplate 103. By adjusting the angle between the two upper counterweights 108, the effect of adjusting the top exciting force is achieved, and by adjusting the angle between the two lower counterweights 109, the effect of adjusting the exciting force generated at the bottom is achieved. At the same time, the phase angle of the vibrator can be increased or decreased by adjusting the positions of the upper eccentric component 105 and the lower eccentric component 106;

[0043] When the angle between the two upper counterweights 108 or the lower counterweight 109 needs to be adjusted, the hexagonal wrench tool is inserted into the insertion cavity 116 on the stud 111. After the hexagonal wrench enters the insertion cavity 116, it pushes the trigger plate 117 to move toward the direction of the cavity 118. The trigger plate 117 drives the limit plate 120 to move through the connecting rod 119. At this time, the first spring 122 and the second spring 123 are compressed. At this time, the limit plate 120 is separated from the bottom of the stud 111, so that the limit plate 120 loses its limiting effect on the stud 111, and the stud 111 can be rotated at this time, so that the distance between the upper anti-skid pad 114 and the lower anti-skid pad 112 becomes larger. Since the length of the through hole inside the upper counterweight block 108 and the lower counterweight block 109 is longer than the diameter of the sleeve 115, it can be pressed to the other side, so that the card plate 110 is disengaged from the multiple card-joining positions in the faceplate card slot 107 through the inclined surface on one side, and it can be easily rotated at this time. The faceplate card slot 107 is composed of multiple adjustment slots. Figure 2 and Figure 3 , each adjustment slot is provided with a plurality of engaging positions, and the engaging plate 110 can be moved from one engaging position to another engaging position, so as to slightly adjust the angle between the two counterweights. When a larger angle needs to be adjusted, the stud 111 is further rotated upward, so that the distance between the upper anti-skid pad 114 and the lower anti-skid pad 112 becomes larger, so that the engaging plate 110 can be disengaged from the faceplate engaging slot 107, so as to rotate each counterweight individually, so as to adjust the exciting force;

[0044] When the angle is adjusted and installation is required, the stud 111 is rotated in the opposite direction. When the distance between the upper anti-skid pad 114 and the lower anti-skid pad 112 becomes smaller, the compression chamber 124 inside the upper anti-skid pad 114 will be compressed, thereby increasing the contact area with the upper eccentric assembly 105 or the lower eccentric assembly 106 to increase the friction. After the hexagonal wrench is pulled out, the second spring 123 is reset, and the limit plate 120 is pushed to fit the bottom of the stud 111 through the spline portion 121, thereby limiting the rotation of the stud 111 to prevent the stud 111 from loosening when the motor body 101 vibrates. The first spring 122 is also reset upward, driving the trigger plate 117 to move upward, thereby covering the plug-in cavity 116.

[0045] When the upper anti-slip pad 114 is compressed, the compression chamber 124 will be compressed, the strip portion 126 will be completely compressed, and the inner walls will fit together. The inclined surface is arranged inside the inclined portion 125, and the inner wall will be blocked by the inclined surface when being squeezed, so that one side of the bottom of the upper anti-slip pad 114 will come into contact with the inner annular surface of the upper eccentric assembly 105, and the upper eccentric assembly 105 will be supported and fixed through the inner wall to prevent the through hole on the counterweight block from sliding on the outer wall of the sleeve 115 when the motor body 101 is in motion.

[0046] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An eccentric device for adjusting exciting force and phase angle, comprising a motor body (101), an upper faceplate (102) and a lower faceplate (103), characterized in that: The upper and lower output ends of the motor body (101) are connected to a rotating shaft (104); the upper faceplate (102) and the lower faceplate (103) are mounted on the rotating shaft (104); an upper eccentric assembly (105) is mounted on the upper faceplate (102); a lower eccentric assembly (106) is mounted on the lower faceplate (103); a faceplate clamping groove (107) in a circumferential array is provided on the upper faceplate (102) and the lower faceplate (103); the upper eccentric assembly (105) is composed of a pair of upper counterweight blocks (108) that cooperate with each other; the lower eccentric assembly (106) is composed of a pair of lower counterweight blocks (109) that cooperate with each other; and a clamping plate (110) that is clamped in the faceplate clamping groove (107) is mounted on the bottom of the upper counterweight block (108) and the lower counterweight block (109); The internal thread of the rotating shaft (104) is connected to a stud (111), the end of the rotating shaft (104) is connected to a lower anti-skid pad (112), the outer wall of the stud (111) is sequentially sleeved with a top cover (113), an upper anti-skid pad (114) and a sleeve (115), and the stud (111) installs the upper anti-skid pad (114) and the sleeve (115) on the rotating shaft (104) through the top cover (113); The head of the stud (111) is provided with an inserting cavity (116), a trigger plate (117) is slidably connected in the inserting cavity (116), a cavity (118) is provided inside the rotating shaft (104), a connecting rod (119) extending into the cavity (118) is connected at the bottom of the trigger plate (117), a limit plate (120) is slidably connected in the cavity (118), the top of the limit plate (120 is in contact with the stud (111) and the connecting rod (119), and a spline portion (121) meshingly connected is provided on the limit plate (120) and the stud (111); A first spring (122) in contact with the trigger plate (117) is installed in the insertion cavity (116), and a second spring (123) for pushing the limit plate (120) and the stud (111) to fit together is installed in the cavity (118); The upper faceplate (102) and the upper eccentric assembly (105) and the lower faceplate (103) and the lower eccentric assembly (106) are all sleeved outside the sleeve (115).

2. The eccentric device for adjusting the exciting force and phase angle according to claim 1, characterized in that: A compression chamber (124) is provided inside the upper anti-slip pad (114), and the compression chamber (124) is composed of an inclined portion (125) and a strip portion (126), and the inclined portion (125) is arranged on a side close to the inner annular surface.

3. The eccentric device for adjusting the exciting force and phase angle according to claim 2 is characterized in that: Anti-slip stripes are provided on the opposite sides of the upper anti-slip pad (114) and the lower anti-slip pad (112).

4. The eccentric device for adjusting the exciting force and phase angle according to claim 1, characterized in that: A washer (127) is also sleeved on the outer wall of the stud (111).

5. The eccentric device for adjusting the exciting force and phase angle according to claim 1, characterized in that: The upper flower disc (102) and the lower flower disc (103) are provided with scales corresponding to the angles of the flower disc clamping grooves (107).

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