Clamping shell type coupler and screw conveyor
By designing the closed keyway and flat key structure of the arc-shaped clamp-shell coupling, the problems of axial squirting and flammability of the clamp-shell coupling in the prior art are solved, and the stable operation and production continuity of the equipment are achieved. .
Patent Information
- Application Number
- CN202323638969.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-28
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-28
AI Technical Summary
Existing clamp-shell couplings are prone to axial twitching when the equipment is running, causing metal friction to generate heat, flammable, and the wear of the key pins is exacerbated and easy to fall off, resulting in equipment shutdown and production losses.
Design a curved clamp-shell coupling, adopting a closed keyway and flat key structure, and fixing the first half clamp-shell and the second half clamp-shell with the reducer output shaft and screw shaft together through fasteners to prevent the shaft Move towards and maintain proper clearance in the assembled state to reduce wear.
It effectively prevents axial twitching, reduces metal friction and heat generation, extends the service life of the equipment and avoids production interruptions.
Smart Images
Figure CN222163289U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a clamp-shell coupling and a screw conveyor. Background Art
[0002] At present, the output shaft (active shaft) of the reducer of a certain equipment is connected to the single screw shaft (passive shaft) by two axially split clamp shells, which are clamped with bolts to achieve the connection of the two shafts. The torque is transmitted by the friction between the surfaces of the two halves of the clamp shell coupling, and the flat key is used as an auxiliary connection. When the equipment is running online, the clamp shell coupling moves to the side of the screw stator, causing metal friction and generating heat, which is transferred to the granular plastic material being transported, which is very easy to cause ignition and poses a hidden danger.
[0003] If axial movement occurs in the connection device between the output shaft of the equipment reducer and the single screw shaft, the radial force area of the side key pin will be reduced, the key pin will be more worn and easy to fall off, causing the connection between the output shaft and the single screw shaft to fail, resulting in equipment shutdown, material conveying interruption, and rear spinning jump and production suspension, causing huge production losses.
[0004] In view of the existing problems of axial movement of the clamp shell coupling, heat generation and flammability caused by metal friction, increased wear and easy falling off of the key pin, there is an urgent need for a clamp shell coupling that can prevent axial movement. Utility Model Content
[0005] The utility model aims to provide a clamp-shell coupling and a screw conveyor.
[0006] In order to achieve the above object, a technical solution adopted by the utility model is:
[0007] A clamp-shell coupling, comprising a first half-shell, a second half-shell, and a flat key, wherein the first half-shell and the second half-shell are both arc-shaped, a first groove is provided on the arc-shaped inner wall of the first half-shell, the first groove extends in a direction parallel to the axial direction of the first half-shell, the length of the first groove is less than the length of the coupling, and there is a spacing between the opposite ends of the first half-shell and the opposite ends of the second half-shell along the extension direction of the first groove, and the output shaft and the screw shaft of the reducer matched with the coupling are provided with a second groove; the other two ends of the first half-shell and the second half-shell are provided with corresponding first mounting holes, and the first half-shell is connected to the second half-shell by installing a first fastener in the first mounting holes; the second half-shell is provided with two second mounting holes along its radial direction, and the output shaft and the screw shaft of the reducer are provided with positioning holes corresponding to the second mounting holes, and the second half-shell is connected to the output shaft and the screw shaft of the reducer by installing a second fastener in the second mounting holes and the positioning holes;
[0008] The coupling has an assembled state. When in the assembled state, the first half shell and the second half shell are arranged relatively to each other and a center hole is formed in the middle. The second groove on the reducer output shaft and the screw shaft located in the center hole is opposite to the first groove, and the flat key is located in the first groove and the second groove.
[0009] In some embodiments, the flat key includes a first flat key and a second flat key, the first flat key and the second flat key are independent of each other, the second grooves on the reducer output shaft and the screw shaft are adjacent and a gap is maintained between the two, and when in an assembled state, the first flat key and the second flat key are respectively arranged in the second groove on the reducer output shaft and the second groove on the screw shaft.
[0010] In some embodiments, the length of the flat key is smaller than the length of the first groove.
[0011] In some embodiments, when in an assembled state, a first distance is maintained between the first flat key and one end of the first groove, a second distance is maintained between the second flat key and the other end of the first groove, and a gap is maintained between the first flat key and the second flat key.
[0012] In some embodiments, the first spacing is greater than 0 and less than or equal to 5 mm; the second spacing is greater than 0 and less than or equal to 5 mm.
[0013] In some embodiments, the flat key is an integrated structure, and the second grooves on the reducer output shaft and the screw shaft are interconnected.
[0014] In some embodiments, when in the assembled state, the center line of the second mounting hole of the second half shell passes through the first groove of the first half shell.
[0015] In some embodiments, when in the assembled state, a gap is maintained between the first half shell and the side opposite to the second half shell.
[0016] In some embodiments, the gap is greater than 0 and less than or equal to 10 mm.
[0017] In some embodiments, the second fastener is a hexagon socket bolt or a hexagon socket bolt.
[0018] Another technical solution adopted by the utility model is:
[0019] A screw conveyor comprises the clamp-shell coupling, a reducer output shaft and a screw shaft. The reducer output shaft and the screw shaft are provided with positioning holes corresponding to the second mounting holes on the second half clamp shell.
[0020] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:
[0021] The utility model provides a clamp-shell coupling, wherein the arc-shaped inner wall of the first half clamp shell is provided with a first groove, the first groove is a closed keyway, and the second grooves on the output shaft of the reducer and the screw shaft also form a closed space, the flat key is firmly fixed in the first groove and the second groove, and axial movement can be effectively prevented; the flat key, the output shaft of the reducer, the screw shaft and the first half clamp shell and the second half clamp shell can be fixed together by the first fastener, and axial movement of the shaft and the flat key can be prevented; the second half clamp shell is provided with a second mounting hole along its radial direction, and the output shaft of the reducer and the screw shaft are provided with corresponding positioning holes, and the second half clamp shell is firmly connected with the output shaft of the reducer and the screw shaft by using the second fastener, and axial movement can be prevented. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Attached Figure 1 A structural diagram of the first perspective of the clamp-shell coupling provided by the utility model;
[0023] Attached Figure 2 A structural diagram of the clamp-shell coupling provided by the utility model from a second perspective;
[0024] Attached Figure 3 A structural diagram of a second half shell of the shell-type coupling provided by the utility model from a first perspective;
[0025] Attached Figure 4 A structural diagram of a second half shell of the shell-type coupling provided by the utility model from a second perspective;
[0026] Attached Figure 5 A top view of the second half of the clamp shell of the clamp shell coupling provided by the utility model;
[0027] Attached Figure 6 A front view of the second half of the clamp shell of the clamp shell coupling provided by the utility model;
[0028] Attached Figure 7 A structural diagram of the first half of the clamp shell of the clamp shell coupling provided by the utility model;
[0029] Attached Figure 8 A top view of the first half of the clamp shell of the clamp shell coupling provided by the utility model;
[0030] Attached Fig. 9 A front view of a first half shell of the shell-type coupling provided by the utility model;
[0031] Attached Fig.10 A structural diagram of a reducer output shaft and a screw shaft of the clamp-shell coupling provided by the utility model;
[0032] Attached Fig.11 It is a structural diagram of the second half shell and two shafts of the shell coupling of Example 1;
[0033] Attached Fig.12 This is a structural diagram of the second half of the clamp shell and two shafts of the clamp shell coupling of Example 1 (without flat keys);
[0034] Attached Fig.13 This is a structural diagram of the second half shell and two shafts of the shell-type coupling of Example 1.
[0035] In the above attached figure:
[0036] 1-second half shell, 11-first mounting hole, 12-second mounting hole;
[0037] 2- second fastener;
[0038] 3-reducer output shaft, 31-second groove, 32-positioning hole;
[0039] 4-screw shaft, 41-second groove, 42-positioning hole;
[0040] 5- first fastener;
[0041] 6- flat key, 61- first flat key, 62- second flat key;
[0042] 7-first half shell, 71-first groove. DETAILED DESCRIPTION
[0043] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0044] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0045] See also Figures 1 to 13The clamp shell coupling shown in the figure comprises a first half-shell 7, a second half-shell 1, and a flat key. The first half-shell 7 and the second half-shell 1 are both arc-shaped. The first half-shell 7 and the second half-shell 1 are equal in shape and size. The first half-shell 7 and the second half-shell 1 have an arc-shaped inner wall on the side facing each other. The coupling has an assembled state. When in the assembled state, the first half-shell 7 and the second half-shell 1 are relatively arranged and a circular center hole is formed in the middle of the two. The center line of the center hole is consistent with the center line of the coupling.
[0046] The first half shell 7 and the second half shell 1 both have two opposite ends along their axial direction (see Figure 3 a and b in the middle) and the other two ends (see Figure 3 (refer to c and d in the figure).
[0047] In this example, a first groove 71 is provided on the arc-shaped inner wall of the first half shell 7. The extension direction of the first groove 71 is parallel to the axial direction of the first half shell 7. The length of the first groove 71 is smaller than the length of the first half shell 7. There is a distance between the opposite ends of the first groove 71 along the axial direction and the opposite ends of the first half shell 7, that is, the opposite ends of the first groove 71 do not pass through the opposite ends of the coupling. The opening of the first groove 71 of the first half shell 7 is only arranged on the side facing the second half shell 1. The accommodating space of the first groove 71 is a space with an opening on one side and closed on the other sides.
[0048] The second groove is provided on the output shaft 3 and the screw shaft 4 of the reducer matched with the coupling. When in the assembled state, the first half shell 7 and the second half shell 1 are arranged opposite to each other and a center hole is formed in the middle. The second groove on the output shaft 3 and the screw shaft 4 of the reducer located in the center hole is opposite to the first groove 71, and the flat key is located in the first groove 71 and the second groove to prevent axial movement.
[0049] In one embodiment, the length of the flat key is smaller than the length of the first groove 71 , so as to facilitate the installation of the flat key. Alternatively, the length of the flat key is equal to or slightly smaller than the length of the first groove 71 .
[0050] The other two ends of the first half shell 7 and the second half shell 1 are respectively provided with first mounting holes (only the first mounting hole 11 on the second half shell 1 is marked), and the first half shell 7 is connected to the second half shell 1 by installing the first fastener 5 in the first mounting hole, that is, one of the other two ends of the first half shell 7 and the second half shell 1 is provided with a corresponding first mounting hole, and the other of the other two ends of the first half shell 7 and the second half shell 1 is provided with a corresponding first mounting hole, and the first half shell 7 and the second half shell 1 are fixedly connected by installing the first fastener 5 in the first mounting hole, and the first fastener 5 is perpendicular to the center line of the coupling, wherein there is no hole corresponding to the first mounting hole on the reducer output shaft 3 and the screw shaft 4, that is, the first fastener 5 will not pass through the reducer output shaft 3 and the screw shaft 4.
[0051] In this example, two second mounting holes 12 are provided along the radial direction on the second half shell 1, and the two second mounting holes 12 are located between the first mounting holes at both ends thereof. Positioning holes corresponding to the two second mounting holes 12 are provided on the reducer output shaft 3 and the screw shaft 4, that is, the positioning hole 32 on the reducer output shaft 3 corresponds to one second mounting hole 12, and the positioning hole 42 on the screw shaft 4 corresponds to the other second mounting hole 12. The second half shell 1 is connected to the reducer output shaft 3 and the screw shaft 4 by the second fastener 2, which can further prevent axial movement; when in the assembled state, the center line of the second mounting hole 12 of the second half shell 1 will pass through the first groove 71 of the first half shell 7.
[0052] In one embodiment, the diameter of the second mounting hole 12 is 8-16 mm, such as 10 mm, and the second fastener 2 can be an M10 concave hexagon socket bolt.
[0053] The second fastener 2 in this example is a hexagon socket bolt or an external hexagon socket. If it is a hexagon socket bolt, it may not protrude from the second mounting hole 12, thereby affecting the installation of other peripheral components of the coupling.
[0054] In practical applications, when the flat key has different shapes and the second grooves on the reducer output shaft 3 and the screw shaft 4 are arranged differently, there are two embodiments, as follows:
[0055] Example 1
[0056] See also Figure 11-12 The flat key includes a first flat key 61 and a second flat key 62, which are independent of each other. The first flat key 61 and the second flat key 62 are both in a cubic shape. The second grooves on the reducer output shaft 3 and the screw shaft 4 are opposite to each other and a gap is maintained between them. The second grooves on the reducer output shaft 3 and the screw shaft 4 are distributed along their axial directions. When in the assembled state, the first flat key and the second flat key are respectively arranged in the second groove 31 on the reducer output shaft 3 and the second groove 42 on the screw shaft 4.
[0057] Among them, the second groove 32 on the reducer output shaft 3 has a spacing between its two opposite ends along the extension direction and the opposite ends of the reducer output shaft 3, that is, the opposite ends of the second groove 32 do not pass through the opposite ends of the reducer output shaft 3, and the opening of the second groove 32 of the reducer output shaft 3 is only arranged on the side facing the first half shell 7, and the accommodation space of the second groove 32 is a space with an opening on one side and closed on the other sides; the second groove 42 on the screw shaft 4 has a spacing between its two opposite ends along the extension direction and the opposite ends of the screw shaft 4, that is, the opposite ends of the second groove 42 do not pass through the opposite ends of the screw shaft 4, and the opening of the second groove 42 of the screw shaft 4 is only arranged on the side facing the first half shell 7, and the accommodation space of the second groove 42 is a space with an opening on one side and closed on the other sides.
[0058] In this example, when in the assembled state, the first flat key 61 maintains a first spacing with one end of the first groove 71, and the second flat key 62 maintains a second spacing with the other end of the first groove 71. The first spacing may be greater than 0 and less than or equal to 5 mm; the second spacing may be greater than 0 and less than or equal to 5 mm. This arrangement facilitates the installation of the first flat key and the second flat key.
[0059] When in the assembled state, the center line of one second mounting hole 12 of the second half shell 1 passes through the second groove 31 and the first flat key 61 , and the center line of the other second mounting hole 12 passes through the second groove 42 and the second flat key 62 .
[0060] In this example, the closed first groove 71 forms a closed space, and the second grooves on the reducer output shaft 3 and the screw shaft 4 also form a closed space. The first flat key and the second flat key are firmly fixed in the first groove 71 and the second groove, which can effectively prevent axial movement.
[0061] Example 2
[0062] See also Fig.13 The flat key is an integrated structure, and the flat key is a rectangular parallelepiped. The second grooves on the reducer output shaft 3 and the screw shaft 4 are connected, that is, one end of the second groove on the reducer output shaft 3 is connected to one end of the reducer output shaft 3, and the other end of the second groove does not pass through the other end of the reducer output shaft 3; one end of the second groove on the screw shaft 4 is connected to one end of the screw shaft 4, and the other end of the second groove does not pass through the other end of the screw shaft 4. One end of the second groove on the reducer output shaft 3 that passes through one end of the reducer output shaft 3 is opposite to one end of the second groove on the screw shaft 4 that passes through one end of the screw shaft 4, that is, they are connected. In this way, the first half shell 7, the second half shell 1, the reducer output shaft 3, and the screw shaft 4 can be firmly fixed together.
[0063] In a preferred embodiment, when in the assembled state, a gap is maintained between the first half shell 7 and the second half shell 1 on the opposite side, and the gap is greater than 0 and less than or equal to 10mm, so that the first half shell 7, the second half shell 1 and the two shafts (the output shaft 3 of the reducer and the screw shaft 4) are interference fit after assembly. In other words, when the first half shell 7 and the second half shell 1 are opposite, the side surfaces (joint surfaces) of the first half shell 7 and the second half shell 1 facing each other do not abut against each other, and the side surfaces of the first half shell 7 and the second half shell 1 facing each other are ground thinner by 2mm, so that a gap is maintained between the side surfaces of the first half shell 7 and the second half shell 1 on the opposite side.
[0064] Advantages of the clamp coupling in this example:
[0065] (1) A first groove is provided on the arc-shaped inner wall of the first half shell, and the first groove is a closed keyway. The second grooves on the reducer output shaft and the screw shaft also form a closed space. The flat key is firmly fixed in the first groove and the second groove, which can effectively prevent axial movement. The flat key, the reducer output shaft, the screw shaft and the first half shell and the second half shell can be fixed together by the first fastener to prevent axial movement of the shaft, the coupling and the flat key.
[0066] (2) A second mounting hole is provided in the radial direction of the second half shell, and corresponding positioning holes are provided on the output shaft of the reducer and the screw shaft. A second fastener is used to firmly connect the second half shell to the two shafts to prevent axial movement;
[0067] (3) The mating surfaces of the first half shell and the second half shell facing each other are ground to a certain thickness in the assembled state, so that the first half shell and the second half shell form an interference fit with the two shafts after assembly.
[0068] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.
Claims
1. A clamp-shell coupling, characterized in that: The invention comprises a first half shell, a second half shell and a flat key. The first half shell and the second half shell are both arc-shaped. A first groove is provided on the arc-shaped inner wall of the first half shell. The extension direction of the first groove is parallel to the axial direction of the first half shell. The length of the first groove is smaller than the length of the first half shell. The opposite ends of the first groove along the extension direction are spaced from the opposite ends of the first half shell. The output shaft and the screw shaft of the reducer matched with the coupling are provided with a second groove. The other two ends of the first half shell and the second half shell are provided with corresponding first mounting holes. The first half shell and the second half shell are connected to each other by installing a first fastener in the first mounting holes. The second half shell is provided with two second mounting holes along its radial direction. The output shaft and the screw shaft of the reducer are provided with positioning holes corresponding to the second mounting holes. The second half shell is connected to the output shaft and the screw shaft of the reducer by installing a second fastener in the second mounting holes and the positioning holes. The coupling has an assembled state. When in the assembled state, the first half shell and the second half shell are arranged relatively to each other and a center hole is formed in the middle. The second groove on the reducer output shaft and the screw shaft located in the center hole is opposite to the first groove, and the flat key is located in the first groove and the second groove.
2. The clamp-shell coupling according to claim 1, characterized in that: The flat key includes a first flat key and a second flat key, the first flat key and the second flat key are independent of each other, the second grooves on the reducer output shaft and the screw shaft are adjacent and a gap is maintained between the two, and when in the assembled state, the first flat key and the second flat key are respectively arranged in the second groove on the reducer output shaft and the second groove on the screw shaft.
3. The clamp-shell coupling according to claim 2, characterized in that: The length of the flat key is smaller than the length of the first groove.
4. The clamp-shell coupling according to claim 2, characterized in that: When in the assembled state, a first distance is maintained between the first flat key and one end of the first groove, a second distance is maintained between the second flat key and the other end of the first groove, and a gap is maintained between the first flat key and the second flat key.
5. The clamp-shell coupling according to claim 4, characterized in that: The first spacing is greater than 0 and less than or equal to 5 mm; the second spacing is greater than 0 and less than or equal to 5 mm.
6. The clamp-shell coupling according to claim 1, characterized in that: The flat key is an integrated structure, and the output shaft of the reducer and the second groove on the screw shaft are interconnected.
7. The clamp-shell coupling according to claim 1, characterized in that: When in the assembled state, a gap is maintained between the first half shell and the side surface opposite to the second half shell.
8. The clamp-shell coupling according to claim 7, characterized in that: The gap is greater than 0 and less than or equal to 10 mm.
9. The clamp-shell coupling according to claim 1, characterized in that: When in the assembled state, the center line of the second mounting hole of the second half shell passes through the first groove.
10. A screw conveyor, characterized in that: It comprises the clamp-shell coupling, reducer output shaft and screw shaft as described in any one of claims 1 to 9, wherein the reducer output shaft and screw shaft are provided with positioning holes corresponding to the second mounting holes on the second half clamp shell.