Cover opening device

Abstract

The utility model relates to the field of sealable containers, and discloses a cover opening device which comprises a lever, a branch rotating shaft and a pull rod, the branch rotating shaft and the pull rod are hinged to the lever, and the lever comprises a front end used for being hinged to a cover body, a middle end hinged to the branch rotating shaft and a rear end hinged to the pull rod. A first bearing seat and a second bearing seat are rotationally arranged on the branch rotating shaft in a sleeving manner, and the first bearing seat and the second bearing seat are fixedly connected with the tank body respectively; the device further comprises a connecting block and an operating rod, the connecting block comprises a first end hinged to the branch rotating shaft, a second end fixedly connected with the operating rod and a third end hinged to the end of the pull rod, and a hinged shaft is perpendicular to the branch rotating shaft. Through the arrangement of the branch rotating shaft and the lever and the connection block hinged between the branch rotating shaft and the lever, vertical lifting and horizontal movement of the cover body by the front end of the lever can be realized.

Description

Technical Field

[0001] The utility model relates to the field of airtight containers, in particular to a cover opening device. Background Art

[0002] In the prior art, sealable containers are mostly structured by combining a tank body and a cover body, which is arranged at the opening of the tank body through the cover body. In the field of food and medicine, sealable tanks are one of the most frequently used sealable containers, such as for solid-liquid separation, liquid extraction, etc. The cover body of the sealable tank is generally opened and closed by manual means, which is inconvenient to operate. Some sealable tanks use a cover body lifting method, so that the cover body is vertically raised and separated from the tank body, and the tank body opening is opened. Since the vertical lifting distance of the cover body requires a certain height, it is convenient to take materials or maintain the inside of the tank body, which is inefficient and inconvenient. Utility Model Content

[0003] The utility model aims to provide a cover opening device, which makes the cover opening operation convenient, efficient and convenient.

[0004] In order to solve the above technical problems, the implementation method of the utility model provides a technical solution as follows:

[0005] A cover opening device comprises a lever, and a supporting shaft and a pulling rod respectively hinged to the lever, the lever comprising a front end hinged to the cover body, a middle end hinged to the supporting shaft and a rear end hinged to the pulling rod; a first bearing seat and a second bearing seat are rotatably sleeved on the supporting shaft, the first bearing seat and the second bearing seat are respectively fixedly connected to the tank body; it also comprises a connecting block and an operating rod, the connecting block comprising a first end hinged to the supporting shaft, a second end fixedly connected to the operating rod and a third end hinged to the end of the pulling rod, the hinge axis of the hinge is perpendicular to the supporting shaft.

[0006] Furthermore, it also includes a sleeve bracket, one end of which is sleeved on the support shaft, and the other end of which is hinged to the first end of the connecting block.

[0007] Furthermore, the sleeve bracket is fixedly connected to the supporting shaft.

[0008] Furthermore, the sleeve bracket is slidably connected to the supporting shaft, a stopper is fixedly provided on the supporting shaft, and the stopper is arranged in abutment with the sleeve.

[0009] Furthermore, the sleeve bracket and the supporting shaft are circumferentially fixed via a key connection.

[0010] Furthermore, it also includes a limiting sleeve, which is slidably mounted on the supporting shaft, and a limiting connecting rod is provided between the limiting sleeve and the connecting block, one end of the limiting connecting rod is hinged to the limiting sleeve, and the other end is hinged to the connecting block.

[0011] Furthermore, the supporting shaft and the limiting sleeve are circumferentially fixedly connected via a flat key.

[0012] Furthermore, a limit pin is provided on the supporting shaft, and the limit pin can limit the limit sleeve along the axial direction of the supporting shaft.

[0013] Furthermore, the support shaft includes a coaxially arranged support rod, a first rotating shaft and a second rotating shaft, one end of the support rod is hinged to the lever, the other end of the support rod is fixedly connected to the first rotating shaft, one end of the first rotating shaft is fixedly connected to one end of the second rotating shaft, the first bearing seat is rotatably mounted on the first rotating shaft, and the second bearing seat is rotatably mounted on the second rotating shaft.

[0014] Furthermore, the first rotating shaft and the second rotating shaft are fixedly connected via a coupling, and the coupling includes an upper coupling sleeve sleeved on the end of the first rotating shaft and a lower coupling sleeve sleeved on the end of the second rotating shaft, and the upper coupling sleeve and the lower coupling sleeve are fixedly connected via a flange edge.

[0015] Compared with the prior art, the cover opening device provided by the utility model can realize the vertical lifting and horizontal movement of the cover body by the front end of the lever through the setting of the support shaft and the lever, and the connecting block hingedly set between the support shaft and the lever. Compared with the manual opening and closing method of the cover body, the cover opening device can save the physical strength of the operator and improve the working efficiency. Through the setting of the operating lever, the action of the cover opening operation is simplified, and the working height of the operator to open the cover is also reduced, making the cover opening operation more convenient and safe; compared with the method of lifting and opening the cover body, the lifting height required for opening and closing the cover body is reduced, thereby improving the working efficiency and working safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 This is a front view of the cover opening device in the first embodiment of the utility model;

[0018] Figure 2 This is an exploded view of the cover opening device in the first embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the connection block of the cover opening device in the first embodiment of the utility model;

[0020] Figure 4 This is a front view of the cover opening device in the second embodiment of the utility model;

[0021] Figure 5 This is an exploded view of the cover opening device in the second embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the support shaft structure of the cover opening device in the second embodiment of the utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the connection block of the cover opening device in the second embodiment of the utility model;

[0024] Figure 8 This is a schematic diagram of the motion trajectory of the connecting block of the cover opening device in the second embodiment of the utility model;

[0025] Fig. 9 This is a front view of the cover opening device in the third embodiment of the utility model;

[0026] Fig.10 This is an exploded view of the cover opening device in the third embodiment of the utility model;

[0027] Fig.11 It is a schematic diagram of the structure of the support shaft and coupling of the cover opening device in the third embodiment of the utility model;

[0028] Fig.12 It is a schematic diagram of the three-dimensional structure of the cover opening device in the third embodiment of the utility model.

[0029] Description of the accompanying drawings: 1, tank body; 2, cover body; 21, cover connector; 3, lever; 31, front end; 32, middle end; 33, rear end; 4, support shaft; 41, support connector; 42, stopper; 43, limit hole; 44, key hole; 45, limit pin; 46, flat key; 47, key pin; 401, support rod; 402, first rotation shaft; 403, second rotation shaft; 5, pull rod; 51, upper connector; 52, lower connector; 6, operating rod; 61, rod connector; 7, connecting rod Connecting block; 71, 71', first end; 72, 72', second end; 73, 73', third end; 74, 74', fourth end; 8, first bearing seat; 81, first support plate; 82, first reinforcement plate; 83, upper bearing; 9, sleeve bracket; 10, second bearing seat; 101, second support plate; 102, second reinforcement plate; 103, lower bearing; 11, limiting sleeve; 12, limiting connecting rod; 13, upper coupling sleeve; 14, lower coupling sleeve; 15, coupling. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] The cover opening device provided by the utility model is used in a can-shaped structure with a cover, wherein the can-shaped structure is provided with a can body 1 and a cover body 2, and a cover opening device is provided on the side wall of the can body 1, and the cover opening device is used to separate the cover body 2 from the can body 1 so that the opening of the can body 1 is opened, so as to facilitate taking and placing materials into the internal space of the can body 1.

[0033] like Figure 1-3As shown, the first embodiment of the utility model relates to a cover opening device. The utility model provides a cover opening device, comprising a lever 3 arranged vertically, and a support shaft 4 and a pull rod 5 respectively hinged to the lever 3, the front end 31 of the lever 3 is used for hinged connection with the cover body 2; the middle end 32 of the lever 3 is hinged to the upper end of the support shaft 4 through a hinge shaft, that is, the lever 3 and the support shaft 4 can rotate relative to each other in the vertical direction with their hinge shafts as the rotation axes, the rear end 33 of the lever 3 is hinged to one end of the pull rod 5 through a hinge shaft, that is, the lever 3 and the pull rod 5 can rotate relative to each other in the vertical direction with their hinge shafts as the rotation axes. The support shaft 4 can be relatively rotated in the vertical direction with its hinge axis as the rotation axis; the first bearing seat 8 and the second bearing seat 10 are rotatably sleeved on the support shaft 4; and the lever 3 also includes a connecting block 7 and an operating rod 6 arranged below the lever 3, the connecting block 7 includes a first end 71 hinged to the support shaft 4, a second end 72 fixedly connected to the operating rod 6, and a third end 73 hinged to the pull rod 5, and the hinge axis between the connecting block 7 and the support shaft 4 and the hinge axis between the connecting block 7 and the pull rod 5 are perpendicular to the support shaft 4. The first bearing seat 8 is fixedly connected to the side wall of the tank body 1 through the first supporting plate 81, and the second bearing seat 10 is fixedly connected to the tank body 1 through the second supporting plate 101. By applying downward pressure to the operating rod 6, the connecting block 7 is driven to rotate downward relative to the sleeve bracket 9, thereby driving the pull rod 5 to pull the rear end 33 of the lever 3, and under the action of the middle end 32 fulcrum, the lever 3 front end 31 is lifted in the vertical direction by the lever 3 principle. When the front end 31 is connected to the cover body 2, the cover body 2 is driven to separate from the tank body 1 in the vertical direction. A force is applied to the operating lever 6 in the horizontal direction, and the horizontal force is transmitted through the hinge between the middle end 32 of the lever 3 and the support shaft 4, driving the support shaft 4 to rotate horizontally, thereby shifting the cover body 2 connected to the front end 31 of the lever 3 and the opening position of the tank body 1 to make the opening in an open state, so as to facilitate the taking and placing of materials into the internal space of the tank body 1.

[0034] In an exemplary example, for the convenience of production and assembly, a sleeve bracket 9 is provided between the connecting block 7 and the support shaft 4, and the sleeve bracket 9 is arranged between the first bearing seat 8 and the second bearing seat 10. The sleeve bracket 9 includes a cylinder sleeved on the support shaft 4 and an ear hinged to the first end 71 of the connecting block 7. The cylinder and the support shaft 4 can be fixedly connected with the support shaft 4 by passing a top screw through the side wall of the cylinder. Preferably, the sleeve and the support shaft 4 are clearance-fitted to form a sliding connection, and a circumferential fixed connection is formed between the inner wall of the cylinder and the support shaft 4 through a key connection. The above connection method is a commonly used connection method in the prior art and can be selected for use according to needs, and will not be repeated here.

[0035] In order to further increase the stability of the sleeve bracket 9 during use, a stop portion 42 is fixedly provided on the support shaft 4, and the lower edge of the sleeve bracket 9 abuts against the stop portion 42, so that the stop portion 42 can limit the axial displacement of the sleeve bracket 9 along the support shaft 4.

[0036] In order to increase the rotation stability between the support shaft 4 and the first bearing seat 8 and the second bearing seat 10, an upper bearing 83 is further provided between the first bearing seat 8 and the support shaft 4, the inner ring of the upper bearing 83 is fixedly connected to the support shaft 4, and the outer ring of the upper bearing 83 is fixedly connected to the first bearing seat 8; a lower bearing 103 is provided between the second bearing seat 10 and the support shaft 4, the inner ring of the lower bearing 103 is fixedly connected to the support shaft 4, and the outer ring of the lower bearing 103 is fixedly connected to the second bearing seat 10. Preferably, two first support plates 81 are provided, the two first support plates 81 are arranged in parallel, and a first reinforcement plate 82 is also provided between the two first support plates 81. The first reinforcement plate 82 is fixedly provided between the first bearing seat 8, the first support plate 81 and the side wall of the tank body 1 to increase the stability of the connection between the first bearing seat 8 and the tank body 1; a second reinforcement plate 102 is fixedly provided between the second support plate 101 and the side wall of the tank body 1 to increase the stability of the connection between the second bearing seat 10 and the tank body 1.

[0037] In an exemplary embodiment, a cover connector 21 is fixedly provided on the top of the cover body 2, and the cover connector 21 is provided with an ear. A through hole is provided on the front end 31 of the lever 3, and the lever 3 is hinged to the cover body 2 through a hinge shaft passing through the through hole and the ear; a support connector 41 is fixedly provided on one end of the support shaft 4 facing the lever 3, and the support connector 41 is provided with an ear. A through hole is provided on the middle end 32 of the lever 3, and the lever 3 is hinged to the support shaft 4 through a hinge shaft passing through the through hole and the ear; the pull rod 5 An upper connecting head 51 is fixedly provided toward one end of the lever 3, and the upper connecting head 51 is provided with a through hole. The rear end 33 of the lever 3 is hinged to the pull rod 5 via the upper connecting head 51; a lower connecting head 52 is provided at one end of the pull rod 5 toward the connecting block 7, and the pull rod 5 is hinged to the third end 73 of the connecting block 7 via the lower connecting head 52; a rod connecting head 61 is fixedly provided at one end of the operating rod 6 toward the connecting block 7, and the rod connecting head 61 is fixedly connected to the second end 72 of the connecting block 7 via fasteners.

[0038] like Figure 4-8As shown, the second embodiment of the utility model relates to a cover opening device. Compared with the first embodiment, the second embodiment limits the vertical stroke of the front end 31 of the lever 3 to facilitate the convenience and practicality of the operator's operation. In the second embodiment of the utility model, relative to the first embodiment, two limiting holes 43 are provided on the support shaft 4, and a limiting pin 45 is inserted in the limiting hole 43. A limiting sleeve 11 is slidably sleeved on the support shaft 4 between the two limiting pins 45, and a limiting connecting rod 12 is provided between the limiting sleeve 11 and the connecting block 7. The connecting block 7 is provided with a fourth end 74 corresponding to the limiting connecting rod 12. One end of the limiting connecting rod 12 is hinged to the fourth end 74, and the other end is hinged to the limiting sleeve 11. The hinge shaft is perpendicular to the support shaft 4. Preferably, the limiting sleeve 11 is arranged above the sleeve bracket 9. When the operating rod 6 is pressed down and the front end 31 of the lever 3 is lifted, the limiting sleeve 11 slides downward along the support shaft 4 as the connecting block 7 rotates until the lower end of the limiting sleeve 11 abuts against the limiting pin 45 to stop, and then a force is applied to the operating rod 6 in the horizontal direction, thereby driving the lever 3 to rotate horizontally; when the cover body 2 and the opening of the tank body 1 are completely offset, the operating rod 6 can be released. At this time, the cover body 2 falls due to gravity, driving the lever 3 to rise, and the connecting block 7 rotates upward, so that the limiting sleeve 11 supports the rotation shaft 4 and slides upward until the upper end of the limiting sleeve 11 abuts against the limiting pin 45 to stop, thereby limiting the falling distance of the cover body 2. Figure 8 As shown, when the cover body 2 is closed on the tank body 1, the connecting block 7 is located in the initial position, and the first end 71, the second end 72, the third end 73, and the fourth end 74 are in the initial state. When the operating rod 6 is pressed down, the connecting block 7 rotates downward with the hinge axis of the connecting block 7 and the sleeve bracket 9 as the rotating axis, and the first end 71', the second end 72', the third end 73', and the fourth end 74' are in the lifting state. The first end 71' in the lifting state remains in a vertical position relative to the first end 71 in the initial state, the second end 72' in the lifting state has a downward displacement component in the vertical direction relative to the second end 72 in the initial state, the third end 73' in the lifting state has a downward displacement component in the vertical direction relative to the third end 73 in the initial state, and the fourth end 74' in the lifting state has a downward displacement component in the vertical direction relative to the fourth end 74 in the initial state.

[0039] In an exemplary embodiment, the support shaft 4 and the limiting sleeve 11 are provided with key holes 44 correspondingly, and the limiting sleeve 11 and the support shaft 4 are circumferentially fixedly connected via a flat key 46 provided in the key hole 44. When a horizontal force is applied to the operating rod 6, the horizontal force can be transmitted to the support shaft 4 via the limiting link 12 and the limiting sleeve 11, so that the support shaft 4 can rotate more stably.

[0040] like Figure 9-12As shown, the third embodiment of the utility model relates to a cover opening device. Compared with the second embodiment, in order to facilitate production and assembly, the structure of the support shaft 4 is further improved. In the third embodiment, the support shaft 4 includes a coaxially arranged support rod 401, a first rotation shaft 402 and a second rotation shaft 403, the upper end of the support rod 401 is hinged to the lever 3, the lower end of the support rod 401 is fixedly connected to the upper end of the first rotation shaft 402, the lower end of the first rotation shaft 402 is fixedly connected to the upper end of the second rotation shaft 403, the first bearing seat 8 is rotatably sleeved on the first rotation shaft 402, and the second bearing seat 10 is rotatably sleeved on the second rotation shaft 403. Both ends of the support rod 401 are provided with flange edges, and one end of the support rod 401 is fixedly connected to the support connector 41 through a fastener passing through the flange edge; the first rotating shaft 402 is provided with a flange edge at one end facing the support rod 401, and the first rotating shaft 402 and the support rod 401 are fixedly connected through a fastener passing through the flange edge, and the ends of the first rotating shaft 402 and the second rotating shaft 403 close to each other are correspondingly provided with key pins 47, and the ends of the first rotating shaft 402 and the second rotating shaft 403 close to each other are fixedly connected through a coupling 15. In one embodiment, the coupling 15 includes an upper coupling sleeve 13 sleeved on the end of the first rotating shaft 402 and a lower coupling sleeve 14 sleeved on the end of the second rotating shaft 403, and the upper coupling sleeve 13 and the lower coupling sleeve 14 are fixedly connected through the flange edge. The limiting sleeve 11 is arranged between the first bearing seat 8 and the upper shaft sleeve 13, and a limiting pin 45 is provided above the limiting sleeve 11. The limiting pin 45 and the upper shaft sleeve 13 are used to limit the axial displacement of the limiting sleeve 11 along the second rotating shaft 403; the stopping portion 42 is arranged in the middle of the second rotating shaft 403, the sleeve bracket 9 is arranged between the lower shaft sleeve 14 and the stopping portion 42, and the second bearing seat 10 is arranged below the stopping portion 42.

[0041] Compared with the prior art, the cover opening device provided by the utility model can realize the vertical lifting and horizontal movement of the cover body by the front end of the lever through the setting of the support shaft and the lever, and the connecting block hingedly set between the support shaft and the lever. Compared with the manual opening and closing method of the cover body, the cover opening device provided by the present application can save the physical strength of the operator and improve the working efficiency. Through the setting of the operating lever, the action of the cover opening operation is simplified, and the working height of the operator to open the cover is also reduced, making the cover opening operation more convenient and safe; compared with the jacking-up method of opening and closing the cover body, the lifting height required for opening and closing the cover body is reduced, thereby improving the working efficiency and working safety.

[0042] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A cover opening device, characterized in that: It comprises a lever (3), and a supporting shaft (4) and a pulling rod (5) respectively hinged to the lever (3), wherein the lever (3) comprises a front end (31) hinged to the cover body (2), a middle end (32) hinged to the supporting shaft (4), and a rear end (33) hinged to the pulling rod (5); a first bearing seat (8) and a second bearing seat (10) are rotatably sleeved on the supporting shaft (4), and the first bearing seat (8) and the second bearing seat (10) are respectively fixedly connected to the tank body (1); it also comprises a connecting block (7) and an operating rod (6), wherein the connecting block (7) comprises a first end (71) hinged to the supporting shaft (4), a second end (72) fixedly connected to the operating rod (6), and a third end (73) hinged to the end of the pulling rod (5), and the hinge axis of the hinge is perpendicular to the supporting shaft (4).

2. The cover opening device according to claim 1, characterized in that: It also comprises a sleeve bracket (9), one end of which is sleeved on the support shaft (4) and the other end of which is hinged to the first end (71) of the connecting block (7).

3. The cover opening device according to claim 2, characterized in that: The sleeve bracket (9) is fixedly connected to the supporting shaft (4).

4. The cover opening device according to claim 2, characterized in that: The sleeve bracket (9) is slidably connected to the supporting shaft (4); a stopper (42) is fixedly provided on the supporting shaft (4); and the stopper (42) is arranged in contact with the sleeve.

5. The cover opening device according to claim 4, characterized in that: The sleeve bracket (9) and the supporting shaft (4) are circumferentially fixed via a key connection.

6. The cover opening device according to claim 1, characterized in that: It also comprises a limiting sleeve (11), the limiting sleeve (11) being slidably sleeved on the supporting shaft (4), a limiting connecting rod (12) being provided between the limiting sleeve (11) and the connecting block (7), one end of the limiting connecting rod (12) being hinged to the limiting sleeve (11), and the other end being hinged to the connecting block (7).

7. The cover opening device according to claim 6, characterized in that: The supporting shaft (4) and the limiting sleeve (11) are circumferentially fixedly connected via a flat key (46).

8. The cover opening device according to claim 6, characterized in that: The supporting shaft (4) is provided with a limiting pin (45), and the limiting pin (45) can limit the limiting sleeve (11) along the axial direction of the supporting shaft (4).

9. The cover opening device according to any one of claims 1 to 8, characterized in that: The support shaft (4) comprises a coaxially arranged support rod (401), a first rotating shaft (402) and a second rotating shaft (403); the upper end of the support rod (401) is hinged to the lever (3); the lower end of the support rod (401) is fixedly connected to the upper end of the first rotating shaft (402); the lower end of the first rotating shaft (402) is fixedly connected to the upper end of the second rotating shaft (403); the first bearing seat (8) is rotatably sleeved on the first rotating shaft (402); and the second bearing seat (10) is rotatably sleeved on the second rotating shaft (403).

10. The cover opening device according to claim 9, characterized in that: The first rotating shaft (402) and the second rotating shaft (403) are fixedly connected via a coupling (15), wherein the coupling (15) comprises an upper coupling sleeve (13) sleeved on the end of the first rotating shaft (402) and a lower coupling sleeve (14) sleeved on the end of the second rotating shaft (403), wherein the upper coupling sleeve (13) and the lower coupling sleeve (14) are fixedly connected via a flange edge.

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