Fastening system for fastening pressure tank
By using a spring stroke limiter in the coupling system to limit the force of the spring element, the problem that existing fixing systems are difficult to effectively fix the gas pressure tank in high-pressure environments is solved, and a safe, stable and durable fixing effect is achieved.
Patent Information
- Application Number
- CN202380064341.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-09-27
- Filing Date
- 2023-09-06
- Publication Date
- 2025-04-15
AI Technical Summary
It is difficult for existing fixing systems to effectively fix the gas pressure tank in high pressure environments, especially in the event of an accident, the huge acceleration force applied by the pressure tank to the connector causes the connector to bear excessive stress.
Using a coupling system including a rod, a spring element, a spring stroke limiter, a connecting element and a fixing element, the spring stroke limiter provided at the coupling interface limiter is used to limit the force of the spring element to ensure that the pressure tank can expand and contract without losing contact with the belt under a high pressure environment.
The safety and stability of fixed gas pressure tanks under high pressure environments are achieved, material defects caused by excessive stress of the connectors are avoided, and the service life of the coupling system is extended.
Smart Images
Figure CN119836367A_ABST
Abstract
Description
[0001] The invention relates to a coupling system, a fixing system, a pressure tank system, and a method for fixing a pressure tank, as described in the accompanying claims.
[0002] Pressure tanks are often used to store fluids. For this purpose, fluids such as, for example, gases or liquids are usually introduced into the pressure tank under pressure, in particular under high pressure. As a result, the pressure tank expands or its cross section increases accordingly. Therefore, the pressure tank should not be fixedly mounted so as not to hinder any expansion thereof during the filling process.
[0003] Some fixing systems are known in which the pressure tank is fixed to the frame by means of pre-tensioned straps. The individual connecting elements connecting the straps to the frame are subject to great stresses because the pressure tank can exert great acceleration forces on the connecting elements in the event of an accident in a vehicle.
[0004] It is therefore an object of the present invention to provide an improved solution for securing a gas pressure tank.
[0005] Thus, according to a first aspect of the present invention, a connection system for mechanically connecting a belt is proposed. The connection system includes a plurality of connection interfaces, wherein each of the plurality of connection interfaces includes a rod, a spring element, a spring travel limiter, a connecting element, and a fixing element. The connecting element is movably arranged on the rod and configured to be connected to the belt; the fixing element is fixedly arranged on the rod; the spring element is arranged between the connecting element and the fixing element; the spring travel limiter is arranged between the connecting element and the fixing element on the rod; and the spring travel limiter is shorter than the spring element, so that when the connecting element is pushed toward the fixing element with a defined force, the spring travel limiter forms a force fit between the connecting element, the belt connected to the connecting element, and the rod.
[0006] In the context of the present invention, a "belt" is to be understood as a strip of material, such as, for example, a metal belt and / or a plastic material belt and / or a woven textile fabric belt.
[0007] In the context of the present invention, a "spring element" is to be understood as an elastic, thus reversibly deformable element, such as, for example, a mechanical spring.
[0008] The proposed coupling system is based on the principle that a strap arranged on a connection element of a corresponding coupling interface is itself movable due to the movable mounting of the connection element, so that the pressure tank fixed by the strap can expand and contract without losing contact with the strap.
[0009] Specifically, the connecting element is configured to engage with the loop formed by the belt. Of course, the corresponding belt also can be connected in other ways, for example, by being threaded or clamped on the connecting element.
[0010] Due to the spring travel limiter provided according to the invention, when the spring element is compressed or when the connecting element pushes the spring travel limiter towards the fixing element, a force fit is formed between the connecting element and the band with the fixing element and arranged on the connecting element, and thus between the rod. This means that in the compressed state of the spring element, the force flow between the coupling system and the pressure tank to be fixed bypasses the spring element by "bypassing" so that the spring element is relieved.
[0011] This also means that in the compressed state of the spring element, the coupling system is rigid or hard, so that after the spring travel limiter has been pushed to this position of the fixing element, any further force action results in a direct transfer of force to the rod and the corresponding strap. Thus, deformations of the corresponding pressure tank up to a predetermined geometric limit are tolerated by the spring element, so that the coupling system deforms together with the pressure tank. In the event that the deformation of the pressure tank exceeds the predetermined geometric limit, for example when the pressure tank is moved out of its mounting position in the event of a collision with an obstacle, the deformation limit of the coupling system is exceeded and the coupling system behaves rigidly in order to fix the pressure tank in its position. Thus, the coupling system switches between two states, a compressed state with a predetermined holding force and a rigid state with a maximum holding force.
[0012] Furthermore, the spring travel limiter limits the forces that can be transmitted to the spring element, thus protecting the spring element from excessive stress and avoiding material defects due to overloading. As a result, the service life or operating life of the spring element and therefore of the coupling system can be reliably and precisely determined independently of its type of use.
[0013] Since the spring travel limiter is shorter than the spring element, the spring element can be compressed within a predetermined range, specifically, can be compressed up to the stop position of the spring travel limiter, and can be expanded to the maximum deflection position of the connecting element.
[0014] Due to the deflection of the spring element, the corresponding strap arranged on the connecting element is kept under mechanical tension even when the corresponding pressure tank is contracted. In the process, the spacing length between the maximum deflection position of the connecting element and the fixing element, as well as the spring stiffness of the spring element, determine the holding force of the strap or the coupling system on the pressure tank. The holding force can thus be adjusted by adjusting or moving the fixing element on the rod.
[0015] It can be provided that the rod has a thread for screwing a fixing element thereto only in a partial region, wherein the fixing element is a nut and wherein the thread ends in a region which, in the relaxed state of the coupling system, is located at a distance from the connecting element greater than the length of the spring travel limiter.
[0016] The thread for screwing the fixing element onto the rod, which is formed only in a partial area of the rod, predetermines the holding force of the coupling system for fixing the corresponding pressure tank when the spring element is in the relaxed position. Therefore, the length of the thread can be adapted to adjust the holding force. Of course, the position of the fixing element on the rod can also be changed to adjust the holding force.
[0017] Furthermore, the thread formed in a partial region has the effect that the spring element is subjected to a predetermined torque in order to tension the coupling system.
[0018] Specifically, it is provided that the fixing element comprises a nut and a contact disk, so that the spring element is in contact with the fixing element via the contact disk.
[0019] It can also be provided that the securing element is a securing material projection of the rod which ends in a region which, in the relaxed state of the coupling system, is at a distance from the connecting element that is greater than the length of the spring travel limiter.
[0020] A fixed material projection, such as, for example, a shank which may be machined or welded onto the rod during its manufacture, results in a precisely predetermined retention force for the coupling system.
[0021] It can also be provided that the spring travel limiter is movably arranged between the connecting element and the fixing element on the rod, or is fixedly arranged on the fixing element.
[0022] The spring travel limiter fixedly arranged on the fixing element can for example be designed as an integral or monolithic component of the fixing element. The spring travel limiter of movable design can for example be hollow and guided around the rod, thereby being arranged on the rod.
[0023] It can also be provided that the coupling system comprises two coupling interfaces which are arranged together on the rod.
[0024] Two coupling interfaces provided on a common rod make it possible to connect two straps by means of a compact coupling system in which, in the compressed state of the two spring elements, a force fit is formed between the rod and the two straps. For example, a fixing element can be provided which is fixedly formed at a first end of the rod and a fixing element which is screwed to a second end opposite the first end, so that all parts of the two coupling interfaces can be pushed onto the rod and finally fixed by means of the fixing element which is screwed onto the rod.
[0025] According to a second aspect, the invention relates to a fixing system for fixing a circular pressure tank. The fixing system comprises a belt system and a plurality of possible design embodiments of the coupling system of the invention; wherein the belt system comprises a plurality of belts; wherein the belt system is configured to be connected to a first holding point and a second holding point and to surround the pressure tank between the first holding point and the second holding point; and wherein the belt system is mechanically coupled to a plurality of coupling systems.
[0026] The proposed fastening system is used in particular for fastening a pressure tank at a plurality of, in particular two, holding points.
[0027] It may be arranged that the strap system comprises a first strap, a first end of which is connectable to the first holding point and a second end of which is connected to a connecting element of a coupling system of the plurality of coupling systems; and
[0028] The strap system includes a second strap having a second end connectable to the second retention point, the second end being connected to a connecting element of a coupling system of the plurality of coupling systems.
[0029] A fixing system with a strap system, in particular a strap system comprising two straps engaged in a coupling system such that the coupling system connects the straps, a force fit is formed between the holding point connected to the straps, the straps and the coupling system. Thus, the fixing system is able to fix the pressure tank to the respective holding point. To this end, the strap can be connected to the respective holding point, in particular hooked into the holding point, or screwed or clamped to the holding point. For example, the strap can form a lug, in which a holding point, for example a hook, engages.
[0030] It can also be provided that the fixing system comprises a first coupling system and a second coupling system. It can be provided here that the belt system comprises three belts, wherein a first end of a first belt of the belt system is connectable to a first holding point and a second end is connected to a first connecting element of the first coupling system; wherein a first end of a second belt of the belt system is connected to a second connecting element of the first coupling system and a second end is connected to a first connecting element of the second coupling system; and wherein a first end of a third belt of the belt system is connected to a second connecting element of the second coupling system and a second end is connectable to a second holding point.
[0031] The belt system comprising three belts and two coupling systems can fix a particularly large volume of pressure tank. In the process, a second belt connected to the two coupling systems can be adapted in length, for example, to the volume of the pressure tank.
[0032] According to a third aspect, the invention relates to a pressure tank system for storing a fluid. The pressure tank system comprises a round, in particular cylindrical, pressure tank, a frame having a first holding point and a second holding point, and a possible design embodiment of the fixing system according to the invention, wherein the fixing system surrounds the pressure tank at least in a partial area, and wherein the fixing system is connected to the first holding point and the second holding point.
[0033] A pressure tank system having a frame on which a fixing system is arranged can be easily and safely transported regardless of the filling state of the pressure tank.
[0034] According to a fourth aspect, the invention relates to a method for fixing a pressure tank, in which a pressure tank having a possible design embodiment of the fixing system according to the invention is fixed at a plurality of holding points. Due to the spring elements of the fixing system, the pressure tank is fixed at the holding points with a minimum holding force even in the unfilled state, in particular pushed into the frame, so that even in the case of low acceleration forces, the pressure tank is prevented from slipping out of the frame. Since the fixing system is connected to the holding points, in the case of high acceleration forces, the spring elements are compressed up to the stop position of the spring travel limiter and a force fit is formed between the fixing system and the frame, so that even in the case of high acceleration forces, the pressure tank is securely held in the frame.
[0035] The proposed fastening system is used in particular for carrying out the proposed method.
[0036] Further features, details and advantages of the invention emerge from the content of the claims and from the following description of exemplary embodiments with the aid of the drawings, in which:
[0037] Figure 1 Possible design embodiments of the fastening system according to the invention are shown with two possible design embodiments of the coupling system according to the invention;
[0038] Figure 2 Shown according to Figure 1 A longitudinal section of the fixing system;
[0039] Figure 3 A possible design implementation of the pressure tank system of the present invention is shown;
[0040] Figure 4 Shown according to Figure 3 A cross-sectional view of a pressure tank system;
[0041] Figure 5 Shown according to Figure 3 Detailed view of the connection system of the pressure tank system;
[0042] Figure 6Another possible design embodiment of the coupling system of the present invention is shown; and
[0043] Figure 7 Shown according to Figure 6 Longitudinal section of the connection system.
[0044] Figure 1 The coupling system 100 is shown in . The coupling system 100 is part of the fixing system 200 and comprises a first coupling interface 101 and a second coupling interface 103 , and a first strap 105 and a second strap 107 .
[0045] The first coupling interface 101 comprises a first fixing element 109 , a first contact disk 111 , a first spring element 113 , a first spring travel limiter 115 and a first connecting element 117 , which are each arranged on a rod 119 .
[0046] The first connection element 117 is movable between a first end point at which the first spring element 113 is fully deflected and a second end point at which the first connection element 117 contacts the first spring travel limiter 115. The first end point may optionally be predetermined by a stop formed on the rod 119.
[0047] The first strap 105 is looped around the first connection element 117 so that the first spring element 113 continuously tensions the first strap 105. When the first strap 105 is subjected to a tensile force, for example due to the movement of the pressure tank fixed by the first strap 105, the first strap 105 will pull or push the first connection element 117 towards the first spring element 113, and the first spring element 113 will be compressed until the first connection element 117 contacts the first spring travel limiter 115 and forms a force fit between the first strap 105, the first contact disc 111 and the first fixing element 109 or the rod 119, respectively, thereby preventing any further movement of the first strap 105 and fixing the pressure tank in its position.
[0048] The second coupling interface 103 comprises a second fixing element 121 , a second contact disk 123 , a second spring element 125 , a second spring travel limiter 127 and a second connecting element 129 , which are each arranged on the rod 119 .
[0049] The second connection element 129 is movable between a first end point at which the first spring element 125 is fully deflected and a second end point at which the second connection element 129 pushes the second spring travel limiter 127 toward the second contact disk 123. The second end point may optionally be predetermined by a thread formed on a partial area of the rod 119.
[0050] The second strap 107 is looped around the second connection element 129 so that the second spring element 125 continuously tensions the second strap 107. When the second strap 107 is subjected to a tensile force, for example due to the movement of the pressure tank fixed by the second strap 105, the second strap 105 pushes the second connection element 129 and the second spring travel limiter 127 toward the second contact disc 123, thereby forming a force fit between the second strap 107, the second contact disc 123 and the second fixing element 121 or the rod 119, respectively, thereby preventing any further movement of the second strap 107 and fixing the pressure tank in its position.
[0051] A cross-sectional view of the coupling system 100 is shown in Figure 2 It can be seen here that the first spring travel limiter 115 and the second spring travel limiter 127 surround the rod 119 and that the first fixing element 109 is an integral component of the rod 119 .
[0052] Figure 3 2 . The pressure tank system 300 comprises a circular pressure tank 301 , a frame 303 having a first holding point 305 and a further holding point 307 , and a first fixing system 309 and a second fixing system 311 .
[0053] The pressure tank 301 is fixed to the frame 303 via a first fixing system 309 and a second fixing system 311 .
[0054] Figure 4 A cross-sectional view of the pressure tank system 300 is shown in . It can be seen here that the first fixing system 309 comprises a first strap 313 , a second strap 315 and a third strap 317 .
[0055] The first strap 313 is connected to the first coupling system 100 and the first holding point 307 .
[0056] The second strap 315 is connected to the second fastening system 311 and the first coupling system 100 .
[0057] The third strap 317 is connected to the second attachment system 400 and the second holding point 319 .
[0058] A detailed diagram of the second coupling system 400 of the pressure tank system 300 is shown in Figure 5 Here it can be seen that the connecting elements 501 and 503 of the coupling system 400 engage with the lugs formed by the second strap 315 and the third strap 317 and surround the rod 505 on both sides so that the rod 505 passes through the gaps 507 and 509 in the lugs.
[0059] Figure 6 The connection system 600 is shown in FIG. The connection system 600 is based on Figure 11 , wherein an additional contact disk 601 or 603 is provided between the first connecting element 609 and the first spring element 113 or between the second connecting element 611 and the second spring element 125 , respectively.
[0060] and Figure 1 Compared with the connecting element 100 in FIG. 1 , the shapes of the first connecting element 609 and the second connecting element 611 are changed, so that the first connecting element 609 and the second connecting element 611 respectively have no flat area or have a completely circular cross-section.
[0061] Due to the additional contact plates 601 and 603, and the circular shape of the first connecting element 609 and the second connecting element 611, the movement of the first connecting element 609 is directly transmitted to the first spring element 113, or the movement of the second connecting element 611 is directly transmitted to the second spring element 125, thereby minimizing the movement gap between the connecting elements 609, 611 and the spring elements 113, 125.
[0062] Furthermore, the coupling element 600 comprises at both ends a threaded connection 605 , 607 , via which the spring elements 113 , 125 can be tensioned, ie pretensioned or retensioned.
[0063] The present invention is not limited to any one of the embodiments described above, but can be modified in many different ways.
[0064] All features and advantages arising from the claims, the description and the drawings, including structural details, spatial arrangements and method steps, either alone or in any combination, may be essential elements of the invention.
[0065] Reference numerals list
[0066] 100: Connection system
[0067] 101: Connection interface
[0068] 103: First Tape
[0069] 105: Second Tape
[0070] 107: Second Tape
[0071] 109: First fixing element
[0072] 111: First contact plate
[0073] 113: First spring element
[0074] 115: First spring travel limiter
[0075] 117: First connection element
[0076] 119: Rod
[0077] 121: Second fixing element
[0078] 123: Second contact plate
[0079] 125: Second spring element
[0080] 127: Second spring travel limiter
[0081] 129: Second connection element
[0082] 200: Fixed system
[0083] 300: Pressure tank system
[0084] 301: Pressure tank
[0085] 303: Framework
[0086] 305: First holding point
[0087] 307: Another holding point
[0088] 309: First fixing system
[0089] 311: Second fixing system
[0090] 313: The First Tape
[0091] 315: Second Belt
[0092] 317: The Third Belt
[0093] 319: Second holding point
[0094] 400: Connection system
[0095] 501: Connecting element
[0096] 503: Connecting elements
[0097] 505: Rod
[0098] 507: Gap
[0099] 509: Gap
[0100] 600: Connection system
[0101] 601: Contact plate
[0102] 603: Contact plate
[0103] 605: Threaded connection
[0104] 607: Threaded connection
Claims
1. A coupling system (100, 400, 600) for mechanically coupling a belt (105, 107, 313, 315, 317), in, The connection system (100, 400, 600) comprises a plurality of connection interfaces (101, 103); Wherein, each connection interface (101, 103) of the plurality of connection interfaces (101, 103) comprises: - rod (119, 505); - spring element (113, 125); - Spring travel limiter (115, 127); - a connecting element (117, 129, 501, 503); - fixing elements (109, 121); wherein the connecting element (117, 129, 501, 503) is movably arranged on the rod (119, 505) and is configured to be connected to the belt (105, 107, 313, 315, 317); wherein the fixing element (109, 121) is fixedly arranged on the rod (119, 505); wherein the spring element (113, 125) is arranged between the connecting element (117, 129, 501, 503) and the fixing element (109, 121); Wherein, the spring travel limiter (115, 127) is arranged between the connecting element (117, 129, 501, 503) and the fixing element (109, 121) on the rod (119, 505); The spring travel limiter (115, 127) is shorter than the spring element (113, 125), so that when the connecting element (117, 129, 501, 503) is pushed in the direction of the fixing element (109, 121) with a defined force, the spring travel limiter (115, 127) forms a force fit between the connecting element (117, 129, 501, 503), the belt (105, 107, 313, 315, 317) connected to the connecting element (117, 129, 501, 503) and the rod (119, 505).
2. The coupling system (100, 400, 600) according to claim 1, It is characterized in that The rod (119, 505) has a thread only in a partial area for screwing the fixing element (109, 121) thereon; wherein the fixing element (109, 121) is a nut; and The thread ends in a region where, in the relaxed state of the coupling system (100, 400, 600), the distance between this region and the connecting element (117, 129, 501, 503) is greater than the length of the spring travel limiter (115, 127).
3. The coupling system (100, 400, 600) according to claim 1 or 2, It is characterized in that The fixing element (109, 121) is a fixing material projection of the rod (119, 505), which ends in such an area that, in the relaxed state of the coupling system (100, 400, 600), the distance between this area and the connecting element (117, 129, 501, 503) is greater than the length of the spring travel limiter (115, 127).
4. The coupling system (100, 400, 600) according to any one of the preceding claims, It is characterized in that The spring travel limiter (115, 127) is movably arranged between the connecting element (117, 129, 501, 503) on the rod (119, 505) and the fixing element (109, 121), or is fixedly arranged on the fixing element (109, 121).
5. The coupling system (100, 400, 600) according to any one of the preceding claims, It is characterized in that The connection system (100, 400, 600) comprises two connection interfaces (101, 103) which are arranged together on a rod (119, 505).
6. A fixing system (200, 309, 311) for fixing a circular pressure tank (301), wherein: The fixing system (209, 309, 311) comprises: - belt system; - a plurality of coupling systems (100, 400, 600) according to any one of claims 1 to 5; Wherein, the belt system comprises a plurality of belts (105, 107, 313, 315, 317); wherein the belt system is configured to be connected to a first holding point (307) and a second holding point (319), and to surround the pressure tank (301) between the first holding point (307) and the second holding point (319); Wherein, the belt system is mechanically connected to the plurality of connection systems (100, 400, 600).
7. The fixing system (200, 309, 311) according to claim 6, It is characterized in that The strap system comprises a first strap (313) whose first end is connectable to the first holding point (307) and whose second end is connected to a connecting element (117, 129, 501, 503) of a connecting system (100, 400, 600) among the plurality of connecting systems (100, 400, 600); and The strap system comprises a second strap (315), a second end of which is connectable to the second holding point (319), the second end of which is connected to a connecting element (117, 129, 501, 503) of a connecting system (100, 400, 600) of the plurality of connecting systems (100, 400, 600).
8. The fixing system (200, 309, 311) according to claim 6, It is characterized in that The fixing system (200, 309, 311) comprises a first coupling system (100, 400, 600) as claimed in claim 6 and a second coupling system (100, 400, 600) as claimed in claim 6; and The belt system includes three belts (313, 315, 317); wherein the first end of the first strap (313) of the strap system is connectable to the first holding point (307) and the second end is connected to the first connecting element (117) of the first coupling system (100); wherein the first end of the second strap (315) of the strap system is connected to the second connecting element (129) of the first connecting system (100), and the second end is connected to the first connecting element of the second connecting system (100, 400, 600); The third strap (317) of the strap system has a first end connected to the second connecting element of the second connection system (100, 400, 600), and a second end connectable to the second retaining point (319).
9. A pressure tank system (300) for storing fluid; wherein: The pressure tank system (300) comprises: - a circular pressure tank (301); - a frame (303) having a first holding point (307) and a second holding point (319); - A fixing system (200) according to any one of claims 6 to 8; wherein the fixing system (200) surrounds the pressure tank (301) at least in a partial area; and Therein, the fixing system (200) is connected to the first holding point (307) and the second holding point (319).
10. A method for fastening a pressure tank (301), in which method a pressure tank (301) having a fastening system (200) according to any one of claims 6 to 8 is fastened at a plurality of holding points (307, 319).
Citation Information
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