Safety protection interlocking device for gravity sensing of cement packaging machine
By installing a gravity sensor and an elastic safety protection interlocking device on the cement packaging machine, an automatic emergency stop is achieved when the operator is mechanically injured, solving the personal safety issue during the bag insertion process and improving the safety of the production process.
Patent Information
- Application Number
- CN202422278948.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-09-18
AI Technical Summary
Existing cement packaging machines lack personal safety protection devices during the bag insertion process, which makes operators vulnerable to mechanical injuries, and the equipment cannot detect dangerous factors in time, causing accidents to escalate.
A gravity-sensing safety protection interlocking device for a cement packaging machine is designed. Utilizing a combination of a gravity sensor and an elastic part, the device is triggered to operate normally when standing on the working platform and automatically stops suddenly when leaving, thus avoiding secondary injuries. In addition, the device is prevented from being triggered accidentally by a support plate and abutment grooves.
It effectively avoids the operator from sustained injuries during the bag insertion process, ensures that the equipment stops running in time under abnormal circumstances, improves production safety and prevents the expansion of accidents.
Smart Images
Figure CN223384711U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of cement packaging, and in particular to a gravity-sensing safety protection interlocking device for a cement packaging machine. Background Art
[0002] A rotary cement packaging machine is used in the cement production process. During operation, the rotary cement packaging machine requires manual bag insertion (that is, the cement packaging bags are fixed on the eight-mouth packaging machine). After the bag insertion is completed, the eight-mouth packaging machine rotates and fills the cement into the packaging bags. In the existing technology, there is no personal safety protection device for the operators during the manual bag insertion operation. Employees are prone to mechanical injuries during the bag insertion operation. Mechanical injuries include the operator's hands being stuck in the packaging machine. When the safety officer fails to stop the equipment in time, the running packaging machine cannot spontaneously detect the dangerous factors in a timely and effective manner. The running packaging machine continues to rotate and drags the operator, and even drags the operator into the packaging machine, which is likely to cause continuous personal injury and cause the accident to expand. Utility Model Content
[0003] In view of the above problems, an embodiment of the present application provides a gravity-sensing safety protection interlocking device for a cement packaging machine, which can spontaneously stop the packaging machine when the operator is mechanically injured, thereby avoiding continuous personal injury and expansion of accidents.
[0004] According to one aspect of an embodiment of the present application, a gravity-sensing safety interlock device for a cement packaging machine is provided. The gravity-sensing safety interlock device comprises a packaging machine body, a PLC control box, and an interlock device. The packaging machine body comprises an eight-mouth packaging machine and an emergency stop switch. The interlock device comprises a mounting slot disposed on the ground, a support bucket disposed within the mounting slot, a top edge of the support bucket extending above the mounting slot and extending outward to form an annular lug plate, a working platform disposed on the top of the support bucket, a plurality of elastic members connected to the bottom of the working platform, the other ends of the elastic members being connected to the inner bottom wall of the support bucket, a gravity sensor fixed to the bottom of the support bucket, the gravity sensor and the emergency stop switch being electrically connected to the PLC control box, a contact platform fixed to the inner bottom wall of the support bucket below the gravity sensor, support plates hingedly connected to the four sides of the working platform, the other ends of the support plates forming a support platform, and a plurality of abutment grooves matching the support platform are formed on the top of the lug plate.
[0005] In some embodiments, the elastic member is a compression spring.
[0006] In some embodiments, there are four compression springs, and the four compression springs are evenly arranged at the bottom of the working platform.
[0007] In some embodiments, a limiting rod is provided at the central axis of the compression spring, one end of the limiting rod is fixed to the bottom of the working platform, a plurality of through holes are provided on the bottom wall of the support bucket, a limiting cylinder is coaxially provided above the holes, and the free end of the limiting rod passes through the limiting cylinder and the holes.
[0008] In some embodiments, the top end of the limiting cylinder extends and expands outward to form a trumpet-shaped support platform. Correspondingly, the inner cavity of the limiting cylinder expands outward synchronously with its outer wall, and the bottom end of the compression spring abuts against the support platform.
[0009] In some embodiments, the top of the working platform is provided with anti-slip protrusions for operators to stand on.
[0010] In some embodiments, a non-slip leather pad is provided on the top of the work platform for the operator to stand on.
[0011] The beneficial effects of the present application are as follows: in the embodiment of the present application, by arranging the working platform, elastic member, gravity sensor and contact table to cooperate with each other, when the operator stands on the working platform, the gravity sensor will be triggered and the equipment as a whole can operate normally, and when a fault occurs, when the operator is dragged by the equipment and leaves the working platform, the working platform will be reset upward under the action of the elastic member, at which time the gravity sensor is no longer under pressure, and after the PLC control box feeds back the corresponding electrical signal to the emergency stop switch, the equipment as a whole will stop running, thereby effectively avoiding the operator from being injured by the secondary accident and effectively ensuring the safety of the production process. On the other hand, the present application provides a support plate and an abutment groove on the ear plate, so that when the operator is away from work for a long time, the bottom end of the support plate can be inserted into the abutment groove for support, and at this time, when the top of the working platform is under pressure, the working platform will no longer fall and the gravity sensor will not be triggered.
[0012] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:
[0014] Figure 1A schematic diagram of the overall structure of a gravity-sensing safety protection interlocking device for a cement packaging machine provided in an embodiment of the present application;
[0015] Figure 2 for Figure 1 Enlarged view at point A;
[0016] Figure 3 A schematic diagram of the local structure of the working platform provided in an embodiment of the present application.
[0017] The accompanying drawings in the specific implementation manner are as follows:
[0018] Cement packaging machine gravity sensing safety protection interlocking device 100, packaging machine body 110, eight-mouth packaging machine 111, emergency stop switch 112, PLC control box 120, interlocking device 130, mounting groove 131, support bucket 132, limiting cylinder 132a, hole 132b, support platform 132c, ear plate 133, abutting groove 133a, working platform 134, anti-slip protrusion 134a, elastic member 135, gravity sensor 136, contact platform 137, support plate 138, limiting rod 139. DETAILED DESCRIPTION
[0019] The following will describe in detail the embodiments of the technical solution of the present application in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only used as examples and cannot be used to limit the scope of protection of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned description of the drawings and any variations thereof are intended to cover non-exclusive inclusions.
[0020] Specifically, please refer to Figures 1 to 3 , Figure 1 This is a schematic diagram of the overall structure of the safety protection interlocking device of the cement packaging machine gravity sensor provided in the embodiment of the present application. Figure 2 for Figure 1 The enlarged view at point A, Figure 3A schematic diagram of the local structure of the working platform provided in an embodiment of the present application. The safety protection interlocking device 100 of the gravity sensor of the cement packaging machine includes a packaging machine body 110, a PLC control box 120 and a interlocking device 130, wherein the packaging machine body 110 is a prior art, which is used to subpackage cement into individual packaging bags. The packaging machine body 110 includes an eight-mouth packaging machine 111 and an emergency stop switch 112. During operation, the operator is required to manually insert the packaging bags into the eight-mouth packaging machine 111 respectively. After the emergency stop switch 112 is turned on, the entire packaging machine body 110 will stop running. The interlocking device 130 includes an installation groove 131 opened on the ground. The installation groove 131 can be formed by digging on the ground. After the excavation is completed, cement can be poured to form an installation groove 131 with a relatively stable structure. A support bucket 132 is disposed within the mounting groove 131. The support bucket 132 can be made of stainless steel, with dimensions matching those of the mounting groove 131. The support bucket 132 is positioned flush against the wall within the mounting groove 131, and an interference fit can be achieved between the support bucket 132 and the mounting groove 131, eliminating the need for additional fastening between the support bucket 132 and the mounting groove 131. The top edge of the support bucket 132 extends above the mounting groove 131 and outward to form an annular lug 133. The bottom of the lug 133 is positioned flush against the ground. It is understood that the lug 133 can also be attached to the top edge of the support bucket 132 by subsequent welding. A work platform 134 is provided on top of the support bucket 132. This platform is used for standing work by an operator. The operator needs to stand on the work platform 134 when inserting bags (i.e., inserting and securing the bags onto the eight-mouth package press 111). Therefore, the position of the work platform 134 can be adjusted to facilitate the insertion of bags based on the position of the eight-mouth package press 111. The bottom of the work platform 134 is connected to a plurality of elastic members 135, the other ends of which are connected to the inner bottom wall of the support bucket 132. When an operator stands on the work platform 134, gravity compresses the elastic members 135, causing the work platform 134 to move downward. A gravity sensor 136 is fixed to the bottom of the support bucket 132. The gravity sensor 136 and the emergency stop switch 112 are electrically connected to the PLC control box 120. A contact platform 137 is fixed on the inner bottom wall of the support bucket 132 below the gravity sensor 136. When the working platform 134 is affected by the gravity of the operator on top of it and falls, the gravity sensor 136 under the operating platform will contact the contact platform 137 and squeeze it. After being squeezed, the gravity sensor 136 sends an electrical signal to the PLC control box 120, and then the PLC control box 120 sends an electrical signal to the emergency stop switch 112, and the packaging machine body 110 operates normally.Conversely, when the operator leaves the operating platform, the elastic member 135 rebounds and resets, the gravity sensor 136 disengages the contact plate 137 and is no longer compressed, the emergency stop switch 112 is activated, and the packaging machine body 110 is brought to an emergency stop. Support plates 138 are hingedly connected to the periphery of the working platform 134. The other end of each support plate 138 forms a support platform 132c. The top of the ear plate 133 is provided with a plurality of abutment grooves 133a that match the support platform 132c. When the operator leaves the working platform 134 for a rest, he or she can lift the working platform 134 upward and insert the support plates 138 into the abutment grooves 133a. At this time, when the top of the working platform 134 is compressed, the working platform 134 will no longer fall, and the gravity sensor 136 will not be triggered.
[0021] As can be seen from the above, in the embodiment of the present application, by setting up the working platform 134, the elastic member 135, the gravity sensor 136 and the contact platform 137, when the operator stands on the working platform 134, the gravity sensor 136 will be triggered, and the equipment as a whole can operate normally. When a fault occurs (for example, the operator's hand is caught in the eight-mouth charter machine 111), when the operator is dragged by the equipment and leaves the working platform 134, the working platform 134 will be reset upward under the action of the elastic member 135. At this time, the gravity sensor 136 is no longer under pressure. After the PLC control box 120 feeds back the corresponding electrical signal to the emergency stop switch 112, the equipment as a whole will stop running, thereby effectively avoiding the operator from being injured secondary to the accident and effectively ensuring the safety of the production process. On the other hand, the present application sets a support plate 138 and opens an abutment groove 133a on the ear plate 133, so that when the operator is away from work for a long time, the bottom end of the support plate 138 can be inserted into the abutment groove 133a for support. At this time, when the top of the working platform 134 is under pressure (for example, a cart or other operator accidentally touches the working platform 134), the working platform 134 will no longer fall, and the gravity sensor 136 will not be triggered, further ensuring that the equipment will not be accidentally started. The equipment can operate normally when there is only an operator on the working platform 134.
[0022] In some embodiments, the elastic member 135 is a compression spring. The compression spring is used as the elastic member 135 because the compression spring is inexpensive and easily available.
[0023] In some embodiments, there are four compression springs, which are evenly arranged at the bottom of the work platform 134. In the embodiment of the present application, through the above arrangement, the four compression springs will stably support the work platform 134, thereby ensuring the stability of the operator when standing on the top of the work platform 134.
[0024] In some embodiments, a limiting rod 139 is provided at the central axis of the compression spring, one end of which is fixed to the bottom of the working platform 134. The bottom wall of the support bucket 132 is provided with a plurality of through-holes 132b. A limiting cylinder 132a is coaxially provided above the holes 132b. The free end of the limiting rod 139 passes through the limiting cylinder 132a and the holes 132b. In the embodiment of the present application, through the above arrangement, when the working platform 134 is rising or falling, the limiting rod 139 will slide inside the limiting cylinder 132a. The limiting cylinder 132a, through the limiting rod 139, limits the horizontal sliding of the working platform 134, thereby ensuring the stability of the working platform 134 during the rising or falling process and preventing it from overturning.
[0025] In some embodiments, the top end of the limiting cylinder 132a extends and expands outward to form a trumpet-shaped support platform 132c. Correspondingly, the inner cavity of the limiting cylinder 132a expands outward synchronously with its outer wall, and the bottom end of the compression spring abuts against the support platform 132c. In the embodiment of the present application, through the above-mentioned configuration, after the trumpet-shaped support platform 132c is formed, it is convenient for the operator to insert the working platform 134 and the limiting rod 139 from the top of the support platform 132c into the limiting cylinder 132a to complete the installation. On the other hand, the support surface of the support platform 132c will be larger than the support surface of the limiting cylinder 132a, which facilitates more stable support of the compression spring.
[0026] In some embodiments, the top of the work platform 134 is provided with anti-slip protrusions 134a for operators to stand on. In the embodiment of the present application, the anti-slip protrusions 134a are provided to prevent workers from slipping, and the anti-slip protrusions 134a and the work platform 134 are an integrated structure, which has better structural integrity and longer service life.
[0027] In some embodiments, a non-slip leather pad is provided on the top of the work platform 134 for the operator to stand on. In the embodiment of the present application, a non-slip belt is provided on the top of the work platform 134 to prevent the operator from slipping during work. The non-slip leather pad can be fixed by bonding, and the non-slip belt can be easily replaced at any time.
[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
Claims
1. A safety protection interlocking device for gravity sensing of cement packaging machine, characterized in that: It includes a packaging machine body, a PLC control box and a locking device. The packaging machine body includes an eight-mouth packaging machine and an emergency stop switch. The interlocking device includes a mounting groove opened on the ground, a support bucket is provided in the mounting groove, the top edge of the support bucket extends above the mounting groove and extends outward to form an annular ear plate, a working platform is provided on the top of the support bucket, a plurality of elastic members are connected to the bottom of the working platform, the other end of the elastic member is connected to the inner bottom wall of the support bucket, a gravity sensor is fixed to the bottom of the support bucket, the gravity sensor and the emergency stop switch are electrically connected to the PLC control box, a contact platform is fixed on the inner bottom wall of the support bucket below the gravity sensor, support plates are hinged on all four sides of the working platform, the other end of the support plate forms a support platform, and a plurality of abutting grooves matching the support platform are provided on the top of the ear plate.
2. The safety protection interlocking device of gravity sensing of cement packaging machine according to claim 1 is characterized in that: The elastic member is a compression spring.
3. The safety protection interlocking device of gravity sensing of cement packaging machine according to claim 2 is characterized in that: There are four compression springs, which are evenly arranged at the bottom of the working platform.
4. The safety protection interlocking device of gravity sensing of cement packaging machine according to claim 3 is characterized in that: A limiting rod is provided at the central axis of the compression spring, one end of the limiting rod is fixed to the bottom of the working platform, a plurality of through holes are provided on the bottom wall of the support bucket, a limiting cylinder is coaxially provided above the holes, and the free end of the limiting rod passes through the limiting cylinder and the holes.
5. The safety protection interlocking device of gravity sensing of cement packaging machine according to claim 4 is characterized in that: The top end of the limiting cylinder extends and expands outward to form a trumpet-shaped support platform. Correspondingly, the inner cavity of the limiting cylinder expands outward synchronously with its outer wall, and the bottom end of the compression spring abuts against the support platform.
6. The safety protection interlocking device of gravity sensing of cement packaging machine according to claim 1 is characterized in that: The top of the working platform is provided with anti-slip protrusions for operators to stand on.
7. The safety protection interlocking device of gravity sensing of cement packaging machine according to claim 1 is characterized in that: The top of the working platform is provided with an anti-skid leather pad for operators to stand on.