Pulverizer with uncovering power-off protection function

Abstract

The utility model discloses a crusher with an uncovering power-off protection function, which comprises a crusher box body and a crushing mechanism, the crushing mechanism comprises a crusher main shaft and a crushing motor connected with the crusher main shaft, one end of the crusher main shaft is provided with a crushing blade, and the crushing blade is positioned in the crusher box body; wherein the pulverizer box body is composed of an upper box body and a lower box body, a travel switch electrically connected with the pulverizing motor is arranged on the outer side wall of the lower box body, a pressing plate corresponding to the position of the travel switch is arranged on the outer side wall of the upper box body, when the upper box body makes contact with the lower box body, the pressing plate makes contact with a contact of the travel switch, and when the upper box body is separated from the lower box body, the pressing plate makes contact with the contact of the travel switch. The pressing plate is separated from a contact of the travel switch, and a plurality of locking structures are further connected between the inner side wall of the upper box body and the inner side wall of the lower box body. According to the utility model, after the upper box body is lifted, namely the crushing motor is closed through the travel switch, the locking structure is exposed, and the speed of the crushing blade is quickly reduced in the process of releasing the locking structure, so that the crushing blade is ensured to be in a safe state when the box body of the crusher is completely opened.

Description

Technical Field

[0001] The utility model belongs to the technical field of crushing equipment, and particularly relates to a crusher with a function of power-off protection when the cover is opened. Background Technique

[0002] The crusher is applicable to industries such as pharmaceuticals, chemicals, metallurgy, food, and construction, and is used to process hard and difficult-to-crush materials. The crusher often uses the method of rapid rotation of the crushing blades arranged in the box body to crush and refine the materials. As consumables, the crushing blades need to be replaced regularly to ensure the crushing effect on the materials. At present, some crushers are set with a travel switch to automatically shut down the equipment when the box body is opened to replace the crushing blades to ensure the safety of operators. However, when the travel switch is triggered, although the crushing motor stops working, the crushing blades often do not stop rotating immediately. At this time, there is still a certain safety risk for the opened box body. Content of the Utility Model

[0003] The purpose of the utility model is to provide a crusher with a function of power-off protection when the cover is opened to overcome the defects of the prior art. The travel switch and the pressing plate triggering it are respectively arranged on the lower box body and the upper box body. That is, the crushing motor can be shut down instantly when the upper box body is lifted. At the same time, the locking structure arranged on the inner side walls of the upper box body and the lower box body needs to be unlocked before the upper box body can be completely removed, and then the crushing blades can be replaced. That is, the arranged locking structure plays a role in delaying the opening of the crusher, so that the blades can gradually decelerate until they stop during this period, fully ensuring the safety of operators. And the locking structure is hidden inside the crusher box body and is only exposed after the upper box body is lifted, that is, after the crushing motor is shut down by the travel switch, to avoid misoperation by operators.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A crusher with a function of power-off protection when the cover is opened, including a crusher box body and a crushing mechanism. The crushing mechanism includes a crusher main shaft and a crushing motor connected to the crusher main shaft. One end of the crusher main shaft is provided with crushing blades, and the crushing blades are located inside the crusher box body;

[0006] Wherein, the crusher box body is composed of an upper box body and a lower box body. A travel switch electrically connected to the crushing motor is arranged on the outer side wall of the lower box body. The outer side wall of the upper box body has a pressing plate corresponding to the position of the travel switch. When the upper box body contacts the lower box body, the pressing plate contacts the contact point of the travel switch. When the upper box body is separated from the lower box body, the pressing plate is separated from the contact point of the travel switch. A plurality of locking structures are also connected between the inner side walls of the upper box body and the lower box body.

[0007] In one embodiment, a plurality of the locking structures are symmetrically arranged on two inner side walls of the crusher box body.

[0008] In one embodiment, the distance between two adjacent locking structures on the same side is consistent.

[0009] In one embodiment, the locking structure includes two locking plates hinged to each other. One end of each of the two locking plates away from each other is connected to the upper box body and the lower box body respectively, and one end of the two locking plates close to each other is hinged together through a rotating shaft.

[0010] In one embodiment, both ends of the rotating shaft protrude from the locking plates.

[0011] In one embodiment, the locking structure includes two locking bars hinged to each other. One end of each of the two locking bars away from each other is connected to the upper box body and the lower box body respectively through locking members.

[0012] In one embodiment, threaded holes are formed on the inner side walls of the upper box body and the lower box body. The locking member is a flat head screw threadedly connected to the threaded hole. A connecting hole for the flat head screw to pass through is formed on the locking bar, and the head size of the flat head screw is larger than the aperture of the connecting hole.

[0013] In one embodiment, the crushing motor is connected to the crusher main shaft through a pulley. Arc-shaped grooves are formed at one end of the upper box body and the lower box body close to each other to form a crushing hole for the crusher main shaft to pass through the crusher box body.

[0014] In one embodiment, the crushing mechanism further has a shield that completely covers the pulley.

[0015] In one embodiment, connecting plates extending in the horizontal direction are provided at one end of the upper box body and the lower box body close to each other.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The crusher provided by the present utility model separately arranges the travel switch and the pressing plate on the lower box body and the upper box body. That is, when the upper box body is lifted, the crushing motor can be turned off immediately. At the same time, the locking structure arranged on the inner side walls of the upper box body and the lower box body needs to be unlocked before the upper box body can be completely removed, and then the crushing blade can be replaced. That is, the arranged locking structure plays a role in delaying the opening of the crusher, enabling the blade to gradually decelerate until it stops during this period, fully ensuring the safety of the operator. Moreover, the locking structure is hidden inside the crusher box body and is only exposed after the upper box body is lifted, that is, after the crushing motor is turned off by the travel switch, avoiding the operator from unlocking the locking structure by mistake and increasing the safety risk. Brief Description of the Drawings

[0018] In the following, the present utility model will be described in more detail based on embodiments and with reference to the drawings.

[0019] Among them:

[0020] Figure 1 Shows the structural schematic diagram of the present utility model in one direction;

[0021] Figure 2 Shows the structural schematic diagram of the crusher box body of the present utility model;

[0022] Figure 3 Shows the structural schematic diagram of the present utility model in another direction;

[0023] Figure 4 Shows the structural schematic diagram of an embodiment of the locking structure of the present utility model;

[0024] Figure 5 Shows the structural schematic diagram of another embodiment of the locking structure of the present utility model;

[0025] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0026] Reference Numerals:

[0027] 1 - Feed inlet, 2 - Crusher box body, 3 - Travel switch, 4 - Guard, 5 - Pulley, 6 - Discharge outlet, 7 - Crusher main shaft, 8 - Pressing plate, 9 - Locking plate, 10 - Rotating shaft, 11 - Locking bar, 12 - Groove, 13 - Connecting plate, 201 - Upper box body, 202 - Lower box body. Detailed Description of the Embodiments

[0028] The following will further illustrate the present utility model with reference to the drawings.

[0029] The present utility model provides a crusher with an open - cover power - off protection function, as Figures 1 to 3As shown in the figure, it includes a crusher box body 2 and a crushing mechanism. The crushing mechanism includes a crusher main shaft 7 and a crushing motor connected to the crusher main shaft 7. One end of the crusher main shaft 7 is equipped with a crushing blade, and the crushing blade is located inside the crusher box body 2;

[0030] Among them, the crusher box body 2 is composed of an upper box body 201 and a lower box body 202. A travel switch 3 electrically connected to the crushing motor is arranged on the outer side wall of the lower box body 202. The outer side wall of the upper box body 201 has a pressing plate 8 corresponding to the position of the travel switch 3. When the upper box body 201 contacts the lower box body 202, the pressing plate 8 contacts the contact point of the travel switch 3. When the upper box body 201 separates from the lower box body 202, the pressing plate 8 separates from the contact point of the travel switch 3. A plurality of locking structures are also connected between the inner side wall of the upper box body 201 and the inner side wall of the lower box body 202;

[0031] It should be noted that in the crusher provided in this embodiment, the travel switch 3 and the pressing plate 8 are respectively arranged on the lower box body 202 and the upper box body 201. That is, the crushing motor can be turned off instantly when the upper box body 201 is lifted. At the same time, the locking structure arranged on the inner side walls of the upper box body 201 and the lower box body 202 needs to be unlocked before the upper box body 201 can be completely removed, and then the crushing blade can be replaced. That is, the arranged locking structure plays a role in delaying the opening of the crusher, so that the blade can gradually decelerate until it stops during this period, fully ensuring the safety of the operator. And the locking structure is hidden inside the crusher box body 2. Only after the upper box body 201 is lifted, that is, after the crushing motor is turned off by the travel switch 3, the locking structure is exposed, preventing the operator from unlocking the locking structure by mistake first and increasing the safety risk;

[0032] Specifically, as Figure 4As shown, the locking structure includes two locking plates 9 that are hinged to each other. One end of each of the two locking plates 9 that is away from each other is respectively connected to the upper box body 201 and the lower box body 202. One end of the two locking plates 9 that is close to each other is hinged together by a rotating shaft 10. Both ends of the rotating shaft 10 protrude from the locking plates 9. That is, by using the two locking plates 9 that are hinged to each other and respectively connected to the upper box body 201 and the lower box body 202, the locking plates 9 can be movably connected to the upper box body 201 and the lower box body 202 through a rotating structure, so that the locking plates 9 can rotate along the connection points. For example, when the upper box body 201 and the lower box body 202 approach each other until they touch, the locking plates 9 rotate close to each other until they fit together. And when the upper box body 201 is lifted, the locking plates 9 rotate away from each other. When reaching the limit position, such as when the distance between the upper box body 201 and the lower box body 202 is 5 cm, the two locking plates 9 form a plane. One end of the locking plates 9 that is close to each other is hinged together by a rotating shaft 10. The rotating shaft 10 is located at the gap between the upper box body 201 and the lower box body 202, which is convenient for the operator to take it out. Taking out the rotating shaft 10 can separate the two locking plates 9 from each other, and then the upper box body 201 can be removed to replace the crushing blade located in the crusher box body 2. During the process of taking out the rotating shaft 10 to unlock the locking structure, when the crushing blade just separates from the upper box body 201 and the lower box body 202, that is, when the travel switch 3 shuts down the crushing motor, its rotation speed begins to decrease rapidly. And when the operator finishes taking out the rotating shaft 10, it can be in a stationary state or close to a stationary state, ensuring the safety of the operator when the crusher box body 2 is fully opened;

[0033] In one embodiment, as Figure 5 shown, the locking structure includes two locking bars 11 that are hinged to each other. One end of each of the two locking bars 11 that is away from each other is respectively connected to the upper box body 201 and the lower box body 202 through locking members. Threaded holes are provided on the inner side walls of the upper box body 201 and the lower box body 202. The locking member is a flat head screw that is threadedly connected to the threaded hole. A connection hole for the flat head screw to pass through is provided on the locking bar 11. The head size of the flat head screw is larger than the diameter of the connection hole. That is, the two locking bars 11 that are hinged to each other can also be respectively connected to the upper box body 201 and the lower box body 202. The size of the locking bars 11 is small, and it is not easy to accumulate the crushed materials. When the upper box body 201 is lifted, the locking structure is exposed. The flat head screws are arranged at the ends close to the upper box body 201 and the lower box body 202. Taking out the flat head screws can separate the locking structure from the crusher box body 2, and then the upper box body 201 can be completely removed;

[0034] In one embodiment, a plurality of locking structures are symmetrically arranged on the two inner side walls of the crusher housing 2, and the spacing between two adjacent locking structures on the same side is consistent, so that when the upper housing 201 is lifted by a lifting device, the connection between the upper housing 201 and the lower housing 202 is more stable, thereby avoiding damage to the locking structures or the crusher housing 2;

[0035] In one embodiment, Figure 2 and Figure 4 As shown, the pulverizing motor is connected to the pulverizer main shaft 7 through the pulley 5, and the ends of the upper box body 201 and the lower box body 202 close to each other are provided with arc-shaped grooves 12 to form a pulverizing hole for the pulverizer main shaft 7 to pass through the pulverizer box body 2. The grooves 12 provided on the upper box body 201 and the lower box body 202 form a pulverizing hole when the two are in contact, and the pulverizer main shaft 7 passes through, so that it extends into the pulverizer box body 2 to pulverize the material. The ends of the upper box body 201 and the lower box body 202 close to each other are provided with a connecting plate 13 extending in the horizontal direction, that is, the connecting plate 13 can also be used to 3. Lock the upper case 201 and the lower case 202 to prevent them from being separated due to vibration during operation. That is, when opening the crusher case 2, first unscrew the bolts at the connecting plate 13, then lift the upper case 201, trigger the travel switch 3 to turn off the crusher motor, and then expose the locking structure. After releasing the locking structure, the upper case 201 can be completely removed to replace the crushing blade in the crusher case 2. In the process of releasing the locking structure, the rotation speed of the crushing blade is rapidly reduced to ensure that when the upper case 201 is fully opened, the speed of the crushing blade has been reduced to a safe state.

[0036] Furthermore, the crushing mechanism also has a guard 4 that completely covers the pulley 5, that is, it protects the crushing mechanism and can also effectively prevent the belt from squeezing the hand or being involved;

[0037] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0038] Although the present utility model has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present utility model. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not depart from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that the different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A crusher with a power-off protection function for opening the lid, characterized in that, It includes a crusher box body and a crushing mechanism. The crushing mechanism includes a crusher main shaft and a crushing motor connected to the crusher main shaft. One end of the crusher main shaft is equipped with crushing blades, and the crushing blades are located inside the crusher box body. Among them, the crusher box body is composed of an upper box body and a lower box body. A travel switch electrically connected to the crushing motor is provided on the outer side wall of the lower box body. The outer side wall of the upper box body has a pressing plate corresponding to the position of the travel switch. When the upper box body contacts the lower box body, the pressing plate contacts the contact point of the travel switch. When the upper box body separates from the lower box body, the pressing plate separates from the contact point of the travel switch. A plurality of locking structures are also connected between the inner side walls of the upper box body and the lower box body.

2. The crusher with an open-cover power-off protection function according to claim 1, wherein, The plurality of locking structures are symmetrically arranged on the two inner side walls of the crusher box body.

3. The crusher with an open - lid power - off protection function according to claim 2, wherein, The distance between two adjacent locking structures on the same side is the same.

4. The crusher with an open-cover power-off protection function according to claim 1, characterized in that, The locking structure includes two locking plates hinged to each other. The ends of the two locking plates away from each other are respectively connected to the upper box body and the lower box body, and the ends of the two locking plates close to each other are hinged together through a rotating shaft.

5. The crusher with the function of power-off protection for opening the cover according to claim 4, characterized in that, Both ends of the rotating shaft protrude from the locking plate.

6. A crusher with a power-off protection function for opening the lid according to claim 1, characterized in that, The locking structure includes two locking bars hinged to each other. The ends of the two locking bars away from each other are respectively connected to the upper box body and the lower box body through locking members.

7. A grinder with an open-cover power-off protection function according to claim 6, characterized in that, Threaded holes are provided on both the inner side wall of the upper box body and the inner side wall of the lower box body. The locking member is a flat head screw threadedly connected to the threaded hole. A connection hole for the flat head screw to pass through is provided on the locking bar, and the head size of the flat head screw is larger than the aperture of the connection hole.

8. The crusher with a power-off protection function for opening the lid according to claim 1, wherein, The crushing motor is connected to the crusher main shaft through a pulley. Arc-shaped grooves are provided at the ends of the upper box body and the lower box body close to each other to form a crushing hole for the crusher main shaft to pass through the crusher box body.

9. A crusher with a power-off protection function for opening the lid according to claim 8, characterized in that, The crushing mechanism also has a protective cover that completely covers the pulley.

10. The crusher with an open-cover power-off protection function according to claim 1, characterized in that, At the ends of the upper box body and the lower box body close to each other, connecting plates extending in the horizontal direction are provided.

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