Modularized counterweight rod structure
By designing a modular counterweight bar structure, the problem of high customization costs in unmanned helicopter counterweight design is solved, enabling flexible combination and universal application of counterweight bars, reducing design and manufacturing time, and improving counterweight efficiency.
Patent Information
- Application Number
- CN202520031065.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing unmanned helicopter counterweight designs suffer from high costs and long manufacturing cycles due to customized design.
The counterweight bar adopts a modular structure. By setting connecting parts and mounting parts at both ends of the counterweight bar, and using connecting parts, limiting parts and fixing parts, the counterweight bar can be modularly combined to ensure the stability and flexibility of the connection.
The modular design of the counterweight bar was realized, which reduced design costs, shortened the manufacturing cycle, and improved the flexibility and versatility of the counterweight.
Smart Images
Figure CN223703007U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to unmanned plane technical field especially relates to a modular counterweight stick structure. BACKGROUND
[0002] During the test flight test of unmanned helicopter, in order to complete different test flight subjects and expand the flight envelope of the helicopter, it is usually necessary to install counterweight at the appropriate position of the unmanned helicopter to achieve the purpose of adjusting the center of gravity of the helicopter. At present, the unmanned helicopter usually adopts the methods of binding lead bag, installing fixed weight counterweight stick and counterweight block. Among them, the lead bag is bound on the unmanned helicopter according to the weight requirement of use, and the fixed weight counterweight stick and the counterweight block are usually designed for a certain type of helicopter or even a certain helicopter, which increases the design cost and manufacturing cycle. SUMMARY
[0003] In view of the above analysis, the utility model embodiment aims to provide a modular counterweight stick structure to solve the problem of fixed weight counterweight stick customization design in aircraft counterweight.
[0004] The utility model mainly aims to realize the following technical scheme:
[0005] A kind of modular counterweight stick structure, including counterweight stick main body and connecting piece;
[0006] The counterweight stick main body includes first installation part, second installation part, first connecting part and second connecting part;
[0007] The first connecting part and the second connecting part are respectively arranged at the two end portions of the counterweight stick main body;The first installation part is arranged on the first connecting part, and the second installation part is arranged on the second connecting part;
[0008] The first installation part of the counterweight stick main body can be connected with the second installation part of another counterweight stick main body;
[0009] The connecting piece is arranged outside the first connecting part, and the connecting piece can connect the first connecting part of the counterweight stick main body and the second connecting part of another counterweight stick main body.
[0010] Further, the first connecting part has a first connecting surface;The second connecting part has a second connecting surface;The connecting piece has a third connecting surface;The third connecting surface is inlaid with the first connecting surface and the second connecting surface.
[0011] Further, the first connecting surface, the second connecting surface and the third connecting surface are non-rotating surfaces.
[0012] Further, it further includes first limiting portion;The first limiting portion is used for limiting the circumferential movement of the connecting piece.
[0013] Further, the second limiting part is further included; the second limiting part is used for limiting the axial movement of the connecting piece.
[0014] Further, the first limiting part includes a limiting slot, a limiting hole and a limiting bolt.
[0015] The limiting slot is arranged on the first connecting part; the length direction of the limiting slot is the same as the length direction of the first connecting part.
[0016] The limiting hole is arranged on the connecting piece, and the limiting bolt is arranged in the limiting slot and the limiting hole.
[0017] Further, the second limiting part includes a spring.
[0018] The first connecting part is provided with a spring mounting slot; the spring mounting slot is arranged along the length direction of the first connecting part.
[0019] The spring is arranged in the spring mounting slot.
[0020] Further, the connecting piece is provided with a spring baffle; the spring baffle is used for limiting the expansion and contraction of the spring.
[0021] Further, the first connecting part and the second connecting part are further provided with a fixing part; the fixing part is used for fixing the counterweight rod.
[0022] Further, the fixing part is provided with a fixing hole.
[0023] Compared with the prior art, the utility model can realize at least one of the following beneficial effects:
[0024] (1) The modular counterweight rod structure of the utility model sets the first connecting part and the second connecting part at the two ends of the counterweight rod, sets the first mounting part and the second mounting part at the first connecting part and the second connecting part respectively, so that the modular counterweight rod has the expansion function, thereby realizing the combined counterweight of any number of counterweight rods, meeting the aircraft counterweight requirement, and having the characteristics of modularization, generalization, high utilization rate, design time saving, cost saving and the like.
[0025] (2) The connecting surface of the connecting piece is attached to the connecting surface of the first counterweight rod and the second counterweight rod, so that the connecting piece limits the relative movement of the first counterweight rod and the second counterweight rod.
[0026] (3) The utility model discloses first limiting portion and second limiting portion are set up;First limiting portion sets up in first connecting portion and connecting piece, and through the limiting bolt, the movement of connecting piece's circumference is limited;Second limiting portion sets up in first connecting portion, and through the spring pressing piece cooperation of connecting piece, the limiting of connecting piece's axial movement is realized, thereby realizing the locking of connecting piece and first counterweight bar and second counterweight bar.
[0027] The various technical solutions described above can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the utility model will be described in the following content, and some advantages can become apparent from the description or be understood by implementing the utility model. The purpose and other advantages of the utility model can be achieved and obtained through the content specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0028] The accompanying drawings are included to provide a further understanding of the embodiments, and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and serve to explain the principles of the utility model.
[0029] Figure 1 It is the structural schematic diagram of counterweight bar;
[0030] Figure 2 It is the structural schematic diagram of counterweight bar main part;
[0031] Figure 3 It is the structural schematic diagram of the end of counterweight bar main part;
[0032] Figure 4 It is the structural schematic diagram of connecting piece;
[0033] Figure 5 It is the structural schematic diagram of first counterweight bar and second counterweight bar connecting step 1;
[0034] Figure 6 It is the structural schematic diagram of first counterweight bar and second counterweight bar connecting step 2;
[0035] Figure 7 It is the structural schematic diagram of first counterweight bar and second counterweight bar connecting step 3;
[0036] Figure 8 It is the structural schematic diagram of first counterweight bar and second counterweight bar connecting series.
[0037] REFERENCE SIGNS:
[0038] 1-weight bar body, 101-fixed part, 1011-fixed hole, 102-first mounting part, 103-second mounting part, 104-first connecting part, 1041-limiting groove, 1042-spring mounting groove, 105-second connecting part, 2-connector, 201-third connecting surface, 202-spring baffle, 203-limiting hole, 3-spring, 4-limiting bolt. DETAILED DESCRIPTION
[0039] The preferred embodiments of the utility model will be described in detail below with reference to the drawings, wherein the drawings constitute a part of the utility model and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.
[0040] One specific embodiment of the utility model, as shown in Figure 1 Disclosed is a modularized weight bar structure, which comprises a weight bar body 1 and a connector 2.
[0041] As shown in Figure 2 and Figure 3 The two ends of the weight bar body 1 are respectively provided with a first connecting part 104 and a second connecting part 105. The first connecting part 104 is provided with a first mounting part 102, and the second connecting part 105 is provided with a second mounting part 103.
[0042] The weight bar can be provided with multiple ones, and two weight bars are taken as examples in the embodiment.
[0043] The first mounting part 102 of the first weight bar is connected with the second mounting part 103 of the second weight bar to form a series connection. Exemplarily, the first mounting part 102 in the embodiment is a threaded boss, the second mounting part 103 is a threaded groove, the threaded boss has an external thread, and the external thread and the internal thread of the threaded groove are arranged in the same way to ensure that two weight bar bodies 1 of the same specification can be installed.
[0044] In the embodiment, the end part where the threaded boss is located is the first connecting part 104, and the end part where the threaded groove is located is the second connecting part 105.
[0045] When there is only one weight bar, the connector 2 is arranged at the first connecting part of the weight bar body 1. When two weight bars are connected, the connector 2 connects the first connecting part 104 of the first weight bar body and the second connecting part 105 of the second weight bar body to further ensure the connection effect of the first weight bar and the second weight bar.
[0046] As shown in Figure 4 Exemplarily, the connector 2 in the embodiment is a slip ring, and the slip ring is in sliding connection with the first connecting part 104 and the second connecting part 105.
[0047] The first connecting part 104 has a first connecting surface, and the second connecting part 105 has a second connecting surface. In the embodiment, the first connecting surface and the second connecting surface are sliding surfaces.
[0048] The connecting piece 2 has a third connecting surface 201. The third connecting surface 201 is in contact with the first connecting surface and the second connecting surface, so as to realize the connection between the connecting piece 2 and the first counterweight rod and the second counterweight rod.
[0049] In the embodiment, the third connecting surface 201 of the slip ring is a sliding surface, and the third connecting surface 201 of the slip ring can slide and be fixed on the first connecting surface and the second connecting surface, so as to realize the connection with the two counterweight rod bodies 1.
[0050] Further, a first limiting part is arranged to limit the circumferential movement of the connecting piece 2. In the embodiment, the first connecting part 104 is provided with a limiting groove 1041, the connecting piece 2 is provided with a limiting hole 203, and a limiting bolt 4 is arranged in the limiting hole 203 and the limiting groove 1041, so as to form the first limiting part. The limiting groove 1041 is an elliptical groove, and the arrangement direction is the same as the length direction of the first connecting part 104. The limiting groove 1041 and the limiting hole 203 are used to insert the limiting bolt 4, which can fix the circumferential movement of the slip ring on one hand, and prevent the slip ring from rotating; on the other hand, when there is only one counterweight rod, the limiting bolt 4 can limit the slip ring to the first connecting part 104 of the counterweight rod body 1, so as to prevent the slip ring from sliding out of the counterweight rod body 1.
[0051] Further, a second limiting part is arranged to limit the axial movement of the connecting piece 2. In the embodiment, the second limiting part is a spring limiting part. In the embodiment, the spring limiting part is a spring 3. A spring mounting groove 1042 is arranged along the entire length direction of the first connecting part 104. The spring 3 is mounted in the entire spring mounting groove 1042, and correspondingly, the third connecting surface 201 of the connecting piece 2 is provided with a spring baffle 202, which is used to limit the extension and contraction of the spring 3. When the first counterweight rod body 1 is connected with the second counterweight rod body 1, one end of the spring 3 abuts against the inner end of the first connecting part 104, and the other end abuts against the spring baffle 202 of the slip ring. Under the action of the elastic force of the spring 3, the outer end of the slip ring abuts against the inner end surface of the second connecting part 105 of the first counterweight rod, and the end of the slip ring is located in the first connecting part 104 of the second counterweight rod, so as to limit the relative rotation of the slip ring with respect to the first counterweight rod and the second counterweight rod.
[0052] Further, the first connecting part 104 and the second connecting part 105 are further provided with a fixing part 101, and the fixing part 101 is provided with a fixing hole 1011 for fixing the weight rod. In some embodiments, the fixing hole 1011 includes a single round hole and an oval long hole, which are respectively used for fixing a single or multiple weight rods on the aircraft by single rope and multi-rope threading methods.
[0053] The use method of the embodiment is as follows:
[0054] As shown in Figure 5 , the spring 3 is installed; the slip ring is installed on the first connecting part 104 of the first weight rod body 1 and inserted into the limiting groove 1041 and the limiting hole 203 to insert the limiting bolt 4, so as to limit the axial rotation of the slip ring; at this time, the spring 3 is in a natural length;
[0055] As shown in Figure 6 , the slip ring is pressed, and the end of the slip ring is tightly attached to the end face of the fixing part 101 adjacent to the first connecting part 104; the threaded boss of the second weight rod body 1 is centered with the threaded groove of the first weight rod body 1 and is screwed in; at this time, the first connecting surface of the first weight rod and the second connecting surface of the second weight rod are in the same plane;
[0056] As shown in Figure 7 , the slip ring is pushed, and the slip ring slides from the first connecting surface of the first weight rod to the second connecting surface of the second weight rod, and the outer end face of the slip ring abuts against the end face of the fixing part 101 of the second weight rod adjacent to the second connecting part 105, as shown in Figure 8 , the series connection of the two weight rods is completed.
[0057] When multiple weight rods need to be connected, the above steps are repeated.
[0058] After the connection is completed, the weight rod is fixed to the aircraft. The weight rod is tied at the specified position of the aircraft by threading the rope in the fixing hole 1011 of the fixing part 101.
[0059] The modular weight rod structure of the embodiment is provided with the first connecting part 104 and the second connecting part 105 at both ends of the weight rod, and the first mounting part 102 and the second mounting part 103 are respectively arranged at the first connecting part 104 and the second connecting part 105; the first mounting part 102 of the first weight rod is connected in series with the second mounting part 103 of the second weight rod, and the connecting piece 2 is used to connect the connecting parts of the two weight rods, so as to lock the relative movement of the first weight rod and the second weight rod, realize the series weight of multiple weight rods, meet the weight requirement of the aircraft, and have the characteristics of modularity, generalization, high utilization rate, saving of design time and cost, etc.
[0060] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.
Claims
1. A modular counterweight structure, characterized in that, It includes a counterweight bar body (1) and a connector (2); The main body (1) of the counterweight bar includes a first mounting part (102), a second mounting part (103), a first connecting part (104), and a second connecting part (105); The first connecting part (104) and the second connecting part (105) are respectively disposed at the two ends of the counterweight bar body (1); the first mounting part (102) is disposed on the first connecting part (104), and the second mounting part (103) is disposed on the second connecting part (105); The first mounting part (102) of the counterweight bar body (1) can be connected to the second mounting part (103) of another counterweight bar body (1); The connector (2) is disposed outside the first connecting part (104); the connector (2) is capable of connecting the first connecting part (104) of the counterweight body (1) and the second connecting part (105) of another counterweight body (1).
2. The modular counterweight structure according to claim 1, characterized in that, The first connecting part (104) has a first connecting surface; the second connecting part (105) has a second connecting surface; the connector (2) has a third connecting surface (201); the third connecting surface (201) is in contact with the first connecting surface and the second connecting surface.
3. The modular counterweight structure according to claim 2, characterized in that, The first connecting surface, the second connecting surface, and the third connecting surface (201) are non-rotational surfaces.
4. The modular counterweight structure according to claim 1, characterized in that, It also includes a first limiting part; the first limiting part is used to limit the circumferential movement of the connector (2).
5. The modular counterweight structure according to claim 1, characterized in that, It also includes a second limiting part; the second limiting part is used to limit the axial movement of the connector (2).
6. The modular counterweight structure according to claim 4, characterized in that, The first limiting part includes a limiting groove (1041), a limiting hole (203), and a limiting bolt (4); The limiting groove (1041) is disposed on the first connecting part (104); the length direction of the limiting groove (1041) is the same as the length direction of the first connecting part (104); The limiting hole (203) is provided on the connector (2), and the limiting groove (1041) and the limiting hole (203) are provided with limiting bolts (4).
7. The modular counterweight structure according to claim 5, characterized in that, The second limiting part includes a spring (3); The first connecting part (104) is provided with a spring mounting groove (1042); the spring mounting groove (1042) is provided along the length direction of the first connecting part (104); The spring (3) is disposed in the spring mounting groove (1042).
8. The modular counterweight structure according to claim 7, characterized in that, The connector (2) is provided with a spring baffle (202); the spring baffle (202) is used to limit the extension and retraction of the spring (3).
9. The modular counterweight structure according to claim 1, characterized in that, A fixing part (101) is also provided between the first connecting part (104) and the second connecting part (105), and the fixing part (101) is used to fix the counterweight bar.
10. The modular counterweight structure according to claim 9, characterized in that, The fixing part (101) is provided with fixing holes (1011).