Space-saving dumbbell pin, middle trough and scraper conveyor
By designing space-saving dumbbell pins, combining the connecting assembly and limiting assembly, the problem of restricted structure of the middle groove in the prior art is solved, and the simplified installation and length adjustment of the middle groove are achieved.
Patent Information
- Application Number
- CN202422359789.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The existing dumbbell pin connection method requires reserved positions to fix the card blocks on the tenon and tenons of the middle groove, resulting in limited minimum length of the adjustment groove, affecting installation and use.
The space-saving dumbbell pin design is adopted. The adjacent middle groove is connected by a combination of connecting components, fixing components and limiting components. The dumbbell pins can be prevented from rotating without a block, simplifying the structure to reduce the minimum length of the adjustment groove.
The tenon and concave tenons in the middle groove are realized without the need to reserve the block position, which simplifies the installation and use of the middle groove and facilitates the adjustment of the length of the groove.
Smart Images
Figure CN223073231U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal mine mechanical equipment, in particular to a space-saving dumbbell pin, a middle trough and a scraper conveyor. Background Art
[0002] A scraper conveyor is the main transportation equipment in a coal mine underground mining working face. The middle trough is the main component of the scraper conveyor. The middle trough includes an adjustment trough for adjusting the length of the working face. The structure of the adjustment trough is the same as that of a common middle trough, and its length is shorter than that of a common middle trough.
[0003] As Figure 7 shown, at present, the most common connection method between middle troughs 60 is to connect them through a dumbbell pin 70. The existing dumbbell pin 70 is in a dumbbell shape. Specifically, dumbbell sockets are provided on the tenon heads and mortise heads at both ends of the middle trough 60. The slender rod in the middle of the dumbbell pin 70 is installed in the dumbbell socket. The inner sides of the protrusions at both ends of the dumbbell pin 70 are respectively clamped with the tenon head and the mortise head to fixedly connect adjacent middle troughs 60. Then, the outer sides of the protrusions at both ends of the dumbbell pin 70 are fixed to the tenon head and the mortise head through a clamping block 80, and a spring pin is used to limit the clamping block 80, so as to prevent the loosening of the connection between the middle troughs 60 caused by the rotation of the dumbbell pin 60 in the dumbbell socket, and prevent the dumbbell pin from falling off caused by the rotation of the dumbbell pin 60 in the dumbbell socket. However, since clamping blocks 80 need to be installed at both ends of the dumbbell pin 70, positions for fixing the clamping blocks 80 at both ends of the dumbbell pin 70 need to be reserved on the tenon head and the mortise head of the middle trough 60. This structure of the middle trough 60 limits the minimum length of the adjustment trough, affecting the installation and use of the adjustment trough. Summary of the Utility Model
[0004] In view of this, it is necessary to provide a space-saving dumbbell pin, a middle trough and a scraper conveyor, which can prevent the dumbbell pin from rotating in the dumbbell socket without a clamping block, so that positions for fixing the clamping blocks at both ends of the dumbbell pin do not need to be reserved on the tenon head and the mortise head of the middle trough, thereby reducing the minimum length of the adjustment trough.
[0005] In a first aspect, the utility model provides a space-saving dumbbell pin, including a connection component, a fixing component and a limiting component. The connection component is in a dumbbell shape and is used to connect adjacent middle troughs. The limiting component is arranged at one end of the connection component. One end of the fixing component is in a ring shape to be sleeved on the connection component and is limited by the limiting component. The other end of the fixing component is in a square shape and extends towards the inside of the connection component for fixedly connecting with the dumbbell socket of the middle trough.
[0006] Preferably, the connecting component includes a connecting rod, a first dumbbell head and a second dumbbell head. The first dumbbell head and the second dumbbell head are respectively arranged at two ends of the connecting rod, and both the first dumbbell head and the second dumbbell head are used for being clamped with the tenon head or mortise head of the middle groove.
[0007] Preferably, a fixing groove is formed in the second dumbbell head for installing the fixing component.
[0008] Preferably, the limiting component includes a limiting rod and a limiting pin. The limiting rod is fixed on the connecting rod and located outside the second dumbbell head. A limiting hole is formed in the limiting rod, and the limiting pin is used for being installed in the limiting hole to limit the fixing component.
[0009] Preferably, the fixing component includes a fixing ring and a fixing block. The fixing ring is used for being fixedly installed on the limiting rod and located between the limiting hole and the second dumbbell head. The fixing block is arranged on one side of the fixing ring and used for fixedly connecting with the fixing groove and the dumbbell socket of the middle groove.
[0010] In a second aspect, the present invention further provides a space-saving middle groove. The space-saving middle groove includes a middle groove body and two sets of tenon components with the same structure. The two sets of tenon components are respectively arranged on two sides of the middle groove body. Each set of tenon components includes a tenon head and a mortise head. The tenon head and the mortise head are respectively arranged at two ends of the middle groove body. Dumbbell sockets are formed in both the tenon head and the mortise head. One side of the dumbbell socket close to the middle groove body is arc-shaped, and the other side is square, and is used for installing the space-saving dumbbell pin as described in the first aspect.
[0011] In a third aspect, the present invention further provides a scraper conveyor, which includes a plurality of space-saving dumbbell pins as described in the first aspect, a plurality of space-saving middle grooves as described in the second aspect and a conveyor body. Each space-saving middle groove is installed inside the conveyor body, and each space-saving dumbbell pin is installed in the dumbbell socket of each adjacent middle groove.
[0012] The above space-saving dumbbell pin is provided with a connection component, a fixing component and a limiting component. The connection component is in the shape of a dumbbell and is used to connect adjacent middle grooves. The limiting component is arranged at one end of the connection component. One end of the fixing component is in a ring shape to be sleeved on the connection component and is limited by the limiting component; the other end of the fixing component is in a square shape and extends towards the inside of the connection component for fixedly connecting with the dumbbell socket of the middle groove; in this way, by installing the connection component inside the dumbbell socket of the adjacent middle groove and making its two ends respectively clamped with the tenon head and mortise head of the adjacent middle groove, the adjacent middle grooves are fixedly connected; the ring-shaped end of the fixing component is sleeved on the connection component and is limited by the limiting component to fixedly connect the fixing component with the connection component. The square-shaped end of the fixing component extends towards the inside of the connection component and is fixedly connected with the dumbbell socket of the middle groove, so that the connection component will not rotate in the dumbbell socket of the middle groove, thus preventing the space-saving dumbbell pin from rotating in the dumbbell socket without a clamping block, so that there is no need to reserve positions for fixing the clamping blocks at both ends of the dumbbell pin on the tenon head and mortise head of the middle groove; the square-shaped end of the fixing component extends towards the inside of the connection component and is fixedly connected with the dumbbell socket, so that there is no need to additionally provide corresponding fixing structures on the middle groove to reduce the minimum length of the adjustment groove, which is convenient for the installation and use of the adjustment groove. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is an oblique overhead view of the space-saving dumbbell pin of the present application.
[0014] Figure 2 is an oblique overhead view of the disassembled space-saving dumbbell pin of the present application.
[0015] Figure 3 is an oblique overhead view of the space-saving dumbbell pin of the present application without the fixing component installed.
[0016] Figure 4 is an oblique overhead view of the fixing component of the present application.
[0017] Figure 5 is an oblique overhead view of the space-saving middle groove of the present application.
[0018] Figure 6 is an oblique overhead view when any two space-saving middle grooves of the present application are connected together.
[0019] Figure 7 is the connection method of the middle groove described in the background art of the present application.
[0020] In the figure: Space-saving dumbbell pin 10, connection assembly 20, connecting rod 21, first dumbbell head 22, second dumbbell head 23, fixing groove 24, fixing assembly 30, fixing ring 31, fixing block 32, limiting assembly 40, limiting rod 41, limiting pin 42, limiting hole 43, space-saving middle groove 50, middle groove body 51, tenon assembly 52, convex tenon 521, concave tenon 522, dumbbell socket 523, middle groove 60, dumbbell pin 70, clamping block 80. Detailed implementation mode
[0021] The following further elaborates in detail on the technical solutions and technical effects of the embodiments of the present utility model in conjunction with the accompanying drawings of the present utility model.
[0022] Please refer to Figures 1 to 2 , First aspect, the present utility model provides a space-saving dumbbell pin 10, including a connection assembly 20, a fixing assembly 30 and a limiting assembly 40. The connection assembly 20 is in the shape of a dumbbell and is used to connect adjacent middle grooves. The limiting assembly 40 is arranged at one end of the connection assembly 20. One end of the fixing assembly 30 is in a ring shape to be sleeved on the connection assembly 20 and is limited by the limiting assembly 40; the other end of the fixing assembly 30 is in a square shape and extends towards the inside of the connection assembly 20 for fixedly connecting with the dumbbell socket of the middle groove; thus, by installing the connection assembly 20 inside the dumbbell socket of the adjacent middle groove and making its two ends respectively engage with the convex tenon and concave tenon of the adjacent middle groove, the adjacent middle grooves are fixedly connected; one end of the fixing assembly 30 in a ring shape is sleeved on the connection assembly 20 and is limited by the limiting assembly 40 to fixedly connect the fixing assembly 30 with the connection assembly 20. One end of the fixing assembly 30 in a square shape extends towards the inside of the connection assembly 20 and is fixedly connected with the dumbbell socket of the middle groove, so that the connection assembly 20 will not rotate in the dumbbell socket of the middle groove, thus preventing the space-saving dumbbell pin from rotating in the dumbbell socket without a clamping block, so that there is no need to reserve positions for fixing the clamping blocks at both ends of the dumbbell pin on the convex tenon and concave tenon of the middle groove; one end of the fixing assembly 30 in a square shape extends towards the inside of the connection assembly 20 and is fixedly connected with the dumbbell socket, so that there is no need to additionally provide corresponding fixing structures on the middle groove to reduce the minimum length of the adjustment groove and facilitate the installation and use of the adjustment groove.
[0023] Please refer to Figure 3 , Further, the connection assembly 20 includes a connecting rod 21, a first dumbbell head 22 and a second dumbbell head 23. The first dumbbell head 22 and the second dumbbell head 23 are respectively arranged at both ends of the connecting rod 21. The first dumbbell head 22 and the second dumbbell head 23 are both used to engage with the convex tenon or concave tenon of the middle groove to fixedly connect the adjacent middle grooves.
[0024] In this embodiment, the shape of the connecting rod 21 is a rectangular body with arc-shaped surfaces on opposite sides.
[0025] Further, a fixing groove 24 is formed in the second dumbbell head 23 for installing a fixing component 30.
[0026] Please refer to Figures 2 to 3 Further, the space-saving dumbbell pin 10 further includes a limiting component 40. The limiting component 40 includes a limiting rod 41 and a limiting pin 42. The limiting rod 41 is fixed on the connecting rod 21 and is located outside the second dumbbell head 23. A limiting hole 43 is formed in the limiting rod 41. The limiting pin 42 is used to be installed in the limiting hole 43 to limit the fixing component 30.
[0027] In this embodiment, the limiting pin 42 is a spring pin for easy disassembly and assembly.
[0028] Please refer to Figure 4 Further, the fixing component 30 includes a fixing ring 31 and a fixing block 32. The fixing ring 31 is used to be fixedly installed on the limiting rod 41 and is located between the limiting hole 43 and the second dumbbell head 23. The fixing ring 31 is installed between the limiting hole 43 and the second dumbbell head 23 by inserting the limiting pin 42 into the limiting hole 43. The fixing block 32 is arranged on one side of the fixing ring 31 and is used to be fixedly connected with the fixing groove 24 and the dumbbell socket of the middle groove, so as to fixedly connect the second dumbbell head 23 with the dumbbell socket of the middle groove, so as to fix the connecting rod 21 into the dumbbell socket and prevent the connecting rod 21 from rotating in the dumbbell socket and causing the connecting rod 21 to fall off.
[0029] Please refer to Figures 5 to 6 Second, the present invention further provides a space-saving middle groove 50. The space-saving middle groove 50 includes a middle groove body 51 and two sets of tenon components 52 with the same structure. The two sets of tenon components 52 are respectively arranged on both sides of the middle groove body 51. Each set of tenon components 52 includes a male tenon 521 and a female tenon 522. The male tenon 521 and the female tenon 522 are respectively arranged at both ends of the middle groove body 51. Dumbbell sockets 523 are formed on both the male tenon 521 and the female tenon 522. One side of the dumbbell socket 523 close to the middle groove body 51 is arc-shaped, and the other side is square, and is used to install the space-saving dumbbell pin 10 as described in the first aspect. Specifically, one side of the dumbbell socket 523 close to the middle groove body 51 is used to install the connecting rod 21, and the other side is used to be fixedly connected with the fixing block 32.
[0030] Third, the present invention further provides a scraper conveyor, which includes a plurality of space-saving dumbbell pins 10 as described in the first aspect, a plurality of space-saving middle grooves 50 as described in the second aspect, and a conveyor body. Each space-saving middle groove 50 is installed inside the conveyor body, and each space-saving dumbbell pin 10 is installed in the dumbbell sockets 523 of adjacent middle grooves.
[0031] Installation Steps of the Space-Saving Dumbbell Pin 10 in Embodiment 1
[0032] 1. Connect the two space-saving middle slots 50 to be fixedly connected end to end;
[0033] 2. Install the connecting rod 21 into the dumbbell sockets 523 of the two space-saving middle slots 50, and after the first dumbbell head 22 and the second dumbbell head 23 are respectively clamped with the tenon heads 521 or mortise heads 522 of the two space-saving middle slots 50, rotate the connecting rod 21 so that the two arc surfaces of the connecting rod 21 are clamped with the inner side of the dumbbell socket 523;
[0034] 3. Slip the fixing ring 31 onto the limiting rod 41, and at the same time pass the fixing block 32 successively through the fixing groove 24 and the outside of the dumbbell socket 523 of one of the space-saving middle slots 50, and make the fixing block 32 clamped with the fixing groove 24 and the outside of this dumbbell socket 523;
[0035] 4. Insert the limiting pin 42 into the limiting hole 43 and fixedly connect the limiting pin 42 with the limiting hole 43 to complete the installation of the space-saving dumbbell pin 10.
[0036] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A space-saving dumbbell pin, characterized in that, It includes a connecting component, a fixing component and a limiting component. The connecting component is dumbbell-shaped and is used to connect adjacent middle grooves. The limiting component is arranged at one end of the connecting component. One end of the fixing component is annular to be sleeved on the connecting component and is limited by the limiting component. The other end of the fixing component is square and extends towards the inside of the connecting component for fixedly connecting with the dumbbell socket of the middle groove.
2. The space-saving dumbbell pin according to claim 1, characterized in that, The connecting component includes a connecting rod, a first dumbbell head and a second dumbbell head. The first dumbbell head and the second dumbbell head are respectively arranged at both ends of the connecting rod. The first dumbbell head and the second dumbbell head are both used for clamping with the tenon head or mortise head of the middle groove.
3. The space-saving dumbbell pin according to claim 2, characterized in that, A fixing groove is formed on the second dumbbell head for installing the fixing component.
4. The space-saving dumbbell pin according to claim 3, characterized in that, The limiting component includes a limiting rod and a limiting pin. The limiting rod is fixed on the connecting rod and is located outside the second dumbbell head. A limiting hole is formed on the limiting rod. The limiting pin is used to be installed in the limiting hole to limit the fixing component.
5. The space-saving dumbbell pin according to claim 4, characterized in that, The fixing component includes a fixing ring and a fixing block. The fixing ring is used to be fixedly installed on the limiting rod and is located between the limiting hole and the second dumbbell head. The fixing block is arranged on one side of the fixing ring for fixedly connecting with the fixing groove and the dumbbell socket of the middle groove.
6. A middle trough that saves space, characterized in that, The space-saving middle groove includes a middle groove body and two sets of tenon components with the same structure. The two sets of tenon components are respectively arranged on both sides of the middle groove body. Each set of tenon components includes a tenon head and a mortise head. The tenon head and the mortise head are respectively arranged at both ends of the middle groove body. Dumbbell sockets are formed on both the tenon head and the mortise head. The side of the dumbbell socket close to the middle groove body is arc-shaped, and the other side is square for installing the space-saving dumbbell pin as described in any one of claims 1-5.
7. A scraper conveyor, characterized in that, It includes a number of space-saving dumbbell pins as described in any one of claims 1-5, a number of space-saving middle grooves as described in claim 6 and a conveyor body. Each space-saving middle groove is installed inside the conveyor body, and each space-saving dumbbell pin is installed in the dumbbell socket of each adjacent middle groove.