Visual creep pre-release device and method for rubber vibration isolator of locomotive diesel generating set

Abstract

The invention relates to the technical field of vibration isolation device installation and rubber creep deformation, in particular to a visualized creep deformation pre-releasing device for a rubber vibration isolator of a locomotive diesel generating set. The visualized creep pre-release device for the rubber vibration isolator of the locomotive diesel generating set comprises a base, a force application mechanism and a pressure detection and visualization mechanism. The upper portion of the base is used for placing a rubber vibration isolator. The force application mechanism is configured to be used for applying downward acting force to the rubber vibration isolator, and the magnitude of the applied acting force is adjustable. And the pressure detection and visualization mechanism is arranged on the force application mechanism and is used for detecting the pressure applied by the force application mechanism in real time and displaying a pressure value. By means of the arrangement mode, the technical problems that an existing rubber vibration isolator creep pre-release device is high in cost and low in use efficiency can be solved at least.

Description

Technical Field

[0001] The invention relates to the field of vibration isolation device installation technology and rubber creep deformation technology, and in particular to a visualized creep pre-release device and method for a rubber vibration isolator of a locomotive diesel generator set. Background Art

[0002] In order to reduce the vibration and noise generated by the diesel generator set during operation, the diesel generator set of a diesel locomotive is usually installed on the locomotive chassis through a certain number of rubber vibration isolators. The rubber vibration isolators can effectively absorb vibration energy and reduce the vibration impact between the diesel generator set and the locomotive.

[0003] When subjected to pressure, rubber isolators will be compressed and deformed by the pressure load. There are usually two types of compression deformation. One is elastic deformation, which is a reversible deformation in which the compression amount can be recovered after the load is removed. The other is creep deformation, which is an irreversible deformation in which the compression amount cannot be recovered after the load is removed. The latter is usually called "creep".

[0004] Creep is an inherent characteristic of rubber vibration isolators. Compared with elastic deformation, the process from creep occurrence to complete release (under a given load, it eventually reaches a state of irrecoverable compression corresponding to the load) usually takes more than 48 hours, and under different loads, the creep process duration and complete release state of rubber vibration isolators are different. In addition, due to the volatility of the rubber vulcanization process of rubber vibration isolators, there are certain differences in the creep characteristics between the same model of rubber vibration isolators. Even under the same load, the creep complete release state of the same model of rubber vibration isolators is also different.

[0005] If creep release is not performed before adjusting the rubber isolators of the diesel generator set, after the diesel generator set has been running for a period of time, the rubber isolators will become shorter and uneven in height due to further creep release, causing the overall height of the diesel generator set to drop. This not only affects the connection alignment between the diesel generator set and the locomotive auxiliary system pipelines, but also causes the diesel generator set base to not be in the same ideal plane, and cannot ensure stable and reliable operation of the diesel generator set.

[0006] Therefore, before adjusting the vibration isolators of the locomotive diesel generator set, the creep pre-release of the rubber vibration isolators must be performed. There are two key prerequisites for the creep pre-release of the rubber vibration isolators: first, the rubber vibration isolators need to withstand a pressure load equal to the weight of the diesel generator set they actually need to support, and second, the rubber vibration isolators must bear the load for at least 48 hours.

[0007] The technical solution of prior art 1 is as follows Figure 1As shown, diesel generator set A is placed on rubber vibration isolator B, so that rubber vibration isolator B bears the actual weight of diesel generator set A, and is left to stand for more than 48 hours for creep release, after which rubber vibration isolator B is adjusted and auxiliary system pipelines are connected. However, this prior art has the following disadvantages: (1) Low efficiency. Since the rubber vibration isolator must be adjusted after the creep of the rubber vibration isolator is completely released, the operation contents such as diesel generator set and diesel generator set and locomotive auxiliary system pipeline connection can be carried out. During the 48-hour standing process, the operator can only passively wait and cannot proceed to the next stage of the process, which has a great impact on production efficiency. (2) Poor general applicability. Prior art 1 is equivalent to using the actual diesel generator set as the load for the creep pre-release of the rubber vibration isolator. However, for locomotives, a diesel generator set is usually equipped with only one type of rubber vibration isolator, the number of applications is fixed, and the installation interface is not universal. This limitation determines that the rubber vibration isolator can only use its matching diesel generator set as the load for creep pre-release, and has poor general applicability. (3) Lack of compression value input required for the formal installation and adjustment of the vibration isolator. The prior art only realizes creep pre-release, and does not transmit the compression value and uniformity value of the vibration isolator to the formal installation of the vibration isolator.

[0008] The technical solution of the prior art 2 is as follows Figure 2As shown, a counterweight A with a weight equivalent to that of a diesel generator set is placed on a rubber isolator B, so that the rubber isolator B simulates the actual weight of the diesel generator set, and is left to stand for more than 48 hours for creep release. After that, the rubber isolator B is installed at the bottom of the diesel generator set, and then the rubber isolator B is adjusted and the auxiliary system pipeline is connected. This prior art has the following defects: 1. High cost. The weight of a domestic locomotive diesel generator set is usually between 4000kg and 34000kg. The counterweight is only suitable for small and medium-tonnage diesel generator sets. Considering the requirements of the counterweight hoisting tools and the counterweight fixing design, even if the cheapest steel is used, the final cost of the counterweight will range from tens of thousands to hundreds of thousands of yuan. (2) Poor flexibility. One of the key prerequisites for the creep pre-release of rubber vibration isolators is that they need to withstand the same pressure load as the weight of the diesel generator set they actually need to support. This means that a weight specification of the counterweight can only be used for a rubber vibration isolator of a diesel generator, unless the company designs the combined weight of the counterweight according to the product specifications of the existing diesel generator set, which undoubtedly further increases the cost. (3) Poor observability. From the perspective of operational convenience, the contour of the counterweight block cannot be made too large, so there is a difference between the distribution position of the rubber vibration isolator at the bottom of the counterweight block and its actual distribution position at the bottom of the diesel generator set. Therefore, the use of the counterweight block for the creep pre-release of the rubber vibration isolator cannot intuitively and continuously monitor the load size of each rubber vibration isolator, and there is a risk of uneven load, too large or too small load on the rubber vibration isolator. (4) Lack of compression value input required for the formal installation and adjustment of the vibration isolator. The second prior art simply realizes the creep pre-release, and the compression value and uniformity value of the vibration isolator are not transmitted to the formal installation of the vibration isolator.

[0009] Based on this, the existing technology still needs to be improved. Summary of the invention

[0010] In view of this, the present invention proposes a visualized creep pre-release device and method for a rubber isolator of a locomotive diesel generator set, which can at least solve the technical problems of high cost and low use efficiency of the existing rubber isolator creep pre-release device.

[0011] The first aspect of the present invention proposes a visualized creep pre-release device for a rubber isolator of a locomotive diesel generator set, comprising: a base, a force-applying mechanism, and a pressure detection and visualization mechanism. The upper part of the base is used to place the rubber isolator. The force-applying mechanism is configured to apply a downward force to the rubber isolator, and the magnitude of the applied force is adjustable. The pressure detection and visualization mechanism is arranged on the force-applying mechanism, and is used to detect the pressure applied by the force-applying mechanism in real time and display the pressure value.

[0012] In some embodiments, a plurality of threaded holes are evenly distributed on the circumferential edge of the base. The force-applying mechanism includes a top cover and a force-applying member. The top cover is detachably arranged above the rubber isolator, and a plurality of circular holes arranged opposite to the plurality of threaded holes are arranged on the circumferential edge of the top cover. The force-applying member includes a plurality of pre-tightening bolts, each of which is inserted into the circular hole and the lower end of which is threadedly connected to the threaded hole.

[0013] In some embodiments, each pre-tightening bolt is provided with a scale, and the scale is used to indicate the sinking depth of the pre-tightening bolt.

[0014] In some embodiments, the top cover includes a bottom plate and a top plate. The top plate is disposed on the bottom plate and connected by a connector. A cavity is disposed between the top plate and the bottom plate. The pressure detection and visualization mechanism includes a strain gauge sensor, a visualization module, and an acquisition transmission cable. The strain gauge sensor is disposed in the cavity, and the visualization module is disposed on the top plate for displaying the pressure value. The acquisition transmission cable is configured to connect the strain gauge sensor with the visualization module by electrical signals.

[0015] In some embodiments, the visualized creep pre-release device of the rubber isolator of the locomotive diesel generator set further includes a limiting mechanism, which is disposed on the base and distributed along the circumference of the rubber isolator to limit the horizontal position of the rubber isolator.

[0016] In some embodiments, the upper part of the base is a plane, and the rubber isolator is arranged at the center of the base. A plurality of first slide groove groups are evenly distributed on the base around the center of the base, and the limiting mechanism includes a plurality of limiting plates and a fixing assembly, each limiting plate is arranged above the first slide groove group, and each limiting plate is provided with a second slide groove group opposite to the first slide groove group, and the fixing assembly runs through the first slide groove group and the second slide groove group, and the limiting plate can adjust the distance to the center of the base under the limitation of the first slide groove group and the second slide groove group. The fixing assembly is configured to fix the limiting plate to the base after the position of the limiting plate is determined.

[0017] In some embodiments, a reference circle is made with the center of the base as the center, the first slide groove group includes two parallel first slide grooves, the second slide groove group includes two parallel second slide grooves, and the extension direction of each first slide groove and each second slide groove is parallel to the radial line of the reference circle.

[0018] In some embodiments, the fixing assembly includes a locking bolt and a locking nut. The locking bolt passes through the first sliding groove and the second sliding groove in sequence from bottom to top, and the locking nut is threadably matched with the locking bolt.

[0019] In some embodiments, the upper surface of the base is a square, and its corners are chamfered. There are four threaded holes distributed at four corners of the base, and there are four first slide groove groups, each of which is located between two adjacent circular holes.

[0020] In some embodiments, the upper and lower surfaces of the bottom plate of the top cover are square, and the corners thereof are chamfered. The outer contour of the top plate of the top cover is aligned with the outer contour of the bottom plate, and there are four circular holes distributed at the four corners of the top cover. There are four strain gauge sensors, and the four strain gauge sensors are respectively arranged at the four corners of the top cover. The acquisition transmission cable connects the four strain gauge sensors in series and then connects them to the interface of the visualization module through the connection interface.

[0021] In some embodiments, the force applying mechanism may also include a combination of one or more of a hydraulic drive mechanism, a pneumatic device, and a rack and pinion device.

[0022] The second aspect of the present invention provides a method for visualizing creep pre-release of a rubber vibration isolator of a locomotive diesel generator set, which is implemented based on the visualizing creep pre-release device of the rubber vibration isolator of the locomotive diesel generator set, and includes the following steps: S1, place the rubber isolator on the upper part of the base; S2, applying a downward force to the rubber vibration isolator using a force applying mechanism; S3, when the pressure detection and visualization mechanism detects that the pressure value applied by the force-applying mechanism reaches a preset pressure value, the device starts to stand still, and monitors the pressure value change in real time during the standing still process; S4, when the pressure detection and visualization mechanism detects that the pressure value decreases, the action height of the rubber vibration isolator is adjusted to maintain the pressure value at a preset value; S4, after the static state is completed, the compression degree of the rubber isolator is obtained.

[0023] The beneficial effects of the present invention are as follows: before being used for the installation of a diesel generator set, the scheme of the present invention can be used to pre-release the creep of the rubber isolator in advance, and a force-applying mechanism is used to adjust the pressure applied to the rubber isolator. The structure is simple. Compared with directly using a diesel generator set or a counterweight block with a weight equivalent to that of a diesel generator set for creep release, the force-applying mechanism of the present application has lower cost, high flexibility, and occupies less space, and can meet the creep pre-release requirements of multiple and various rubber isolators. By setting a pressure detection and visualization mechanism, the load pressure value of the rubber isolator can be displayed in real time. During the creep release process, the operator can monitor and adjust the pressure value regularly. After the release is completed, it can be properly stored and taken at any time, which is convenient for the operator to monitor and adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of a creep pre-release device of a rubber vibration isolator according to prior art 1; Figure 2 It is a schematic diagram of a creep pre-release device of a rubber vibration isolator according to the second prior art; Figure 3 A schematic structural diagram of a visualized creep pre-release device for a rubber vibration isolator of a diesel generator set for a locomotive provided by an embodiment of the present invention; Figure 4 A structural exploded view of a top cover provided in one embodiment of the present invention; Figure 5 A schematic diagram of the structure of a visualization module provided by an embodiment of the present invention; Figure 6 A front view of a visualization module provided for one embodiment of the invention; Figure 7 A schematic diagram of the assembly of a rubber vibration isolator provided for one embodiment of the invention; Figure 8 A schematic diagram of the assembly of a limiting mechanism provided in accordance with an embodiment of the invention; Fig. 9 A schematic diagram of the assembly of a top cover provided for one embodiment of the invention; Fig.10 An assembly diagram of a pre-tightening bolt provided for one embodiment of the invention; Fig.11 A schematic diagram of adjusting a pre-tightening bolt during the force application process provided in accordance with an embodiment of the invention.

[0026] Description of reference numerals: 1. Base; 2. Limit plate; 3. Locking bolt; 4. Locking nut; 5. Pre-tightening bolt; 6. Top cover; 7. Top plate; 8. Bottom plate; 9. Connector; 10. Strain gauge sensor; 11. Collection and transmission cable; 12. Visualization module; 13. Rubber isolator; 14. First slide groove; 15. Second slide groove; 16. Round hole; 17. Threaded hole. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0028] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0029] The first aspect of the present invention provides a visual creep pre-release device for a rubber vibration isolator of a diesel generator set of a locomotive, such as Figure 3 As shown, it includes: a base 1, a force-applying mechanism and a pressure detection and visualization mechanism. The upper part of the base 1 is used to place a rubber isolator 13. The force-applying mechanism is configured to apply a downward force to the rubber isolator 13, and the applied force is adjustable. The pressure detection and visualization mechanism is arranged on the force-applying mechanism, and is used to detect the pressure applied by the force-applying mechanism in real time and display the pressure value.

[0030] Compared with the prior art, the present invention can pre-release the creep of the rubber isolator 13 in advance before installing the diesel generator set, and use a force-applying mechanism to adjust the pressure applied to the rubber isolator 13. The structure is simple. Compared with directly using a diesel generator set or a counterweight block with the same weight as the diesel generator set to perform creep release operations, the force-applying mechanism of the present application has lower costs, high flexibility, and occupies less space, and can meet the creep pre-release requirements of multiple and various rubber isolators 13. By setting a pressure detection and visualization mechanism, the load pressure value of the rubber isolator 13 can be displayed in real time. During the creep release process, the operator can monitor and adjust the pressure value regularly. After the release is completed, it can be properly stored and used at any time, which is convenient for the operator to monitor and adjust.

[0031] In some embodiments, a plurality of threaded holes 17 are evenly distributed on the circumferential edge of the base 1. The force-applying mechanism includes a top cover 6 and a force-applying member. The top cover 6 is detachably disposed above the rubber isolator 13, and a plurality of circular holes 16 are disposed on the circumferential edge of the top cover 6 and are disposed opposite to the plurality of threaded holes 17. The force-applying member includes a plurality of pre-tightening bolts 5, each of which is inserted into the circular hole 16 and has its lower end threadedly connected to the threaded hole 17. Specifically, after the rubber isolator 13 is placed on the base 1, the top cover 6 is disposed above the rubber isolator 13, and then the pre-tightening bolt 5 is screwed into the threaded hole 17, and the depth of the pre-tightening bolt 5 is adjusted according to the required pressure. The pre-tightening force of the pre-tightening bolt 5 covers a wide range. For example, under the premise of ensuring that the pre-tightening bolt 5 can be used repeatedly, the theoretical upper limit value of the pre-tightening force of a single M20, 10.9 grade pre-tightening bolt 5 corresponds to a weight of 1900kg, and the theoretical upper limit value of the pre-tightening force of four pre-tightening bolts 5 corresponds to a total weight of 7600kg, which can fully cover the weight of domestic locomotive diesel generator sets.

[0032] In some embodiments, each pre-tightening bolt 5 is provided with a scale (not shown in the figure), and the scale is provided at the lower end of the pre-tightening bolt 5 to indicate the sinking depth of the pre-tightening bolt 5. Specifically, the scale can verify whether each pre-tightening bolt 5 is evenly applied. If there are differences in the sinking scales between multiple pre-tightening bolts 5, the rubber isolator 13 can be evenly loaded by appropriately adjusting the screw-in depth of one or several pre-tightening bolts 5. On the other hand, the change in the scale value can reflect the compression value of each part of the rubber isolator 13. By reading the final sinking scale value of each pre-tightening bolt 5 during the whole process of creep pre-release compression, the creep pre-release height value of each rubber isolator 13 can be clearly determined, and the rubber isolator 13 can be directly prepared according to the height value. The gasket of the appropriate thickness can be selected to facilitate the formal installation of the rubber isolator 13 under the diesel generator set.

[0033] In some embodiments, Figure 4 As shown, the top cover 6 includes a bottom plate 8 and a top plate 7, both of which can be made of ordinary conventional steel. The top plate 7 is arranged above the bottom plate 8 and is connected by a connector 9, which can be a screw. A cavity is arranged between the top plate 7 and the bottom plate 8. The pressure detection and visualization mechanism includes a strain gauge sensor 10, a visualization module 12 and an acquisition transmission cable 11. The strain gauge sensor 10 is arranged in the cavity, and the visualization module 12 is arranged on the top plate 7 for displaying the pressure value. The acquisition transmission cable 11 is configured to connect the strain gauge sensor 10 to the visualization module 12 by electrical signals. The visualization module 12 is installed above the top cover 6 of the device. Specifically, as shown in Figure 5 and Figure 6 As shown, the strain gauge sensor 10 is a sensor that works on the principle of resistance strain effect, which can convert the strain change on the mechanical component into resistance change, thereby realizing the measurement of physical quantities such as force, pressure, torque, etc. The visualization module 12 belongs to a packaging assembly, which is composed of a battery, a circuit board, a display screen, etc. The strain gauge sensor 10 deforms after being loaded, and its resistance value changes accordingly. The circuit board will convert and calculate the pressure value according to the degree of current change and display it on the display screen. The strain gauge sensor 10, the acquisition transmission cable 11, the circuit board and the display screen used can all be modified from general products. In addition, other pressure conversion methods can also be used to obtain pressure value information, such as indirectly reading the compression of the spring and the compression of the rubber isolator 13.

[0034] In some embodiments, the visualized creep pre-release device of the rubber isolator of the locomotive diesel generator set also includes a limiting mechanism, which is arranged on the base 1 and distributed along the circumference of the rubber isolator 13, and is used to limit the horizontal position of the rubber isolator 13 to ensure that the rubber isolator 13 does not move or deflect excessively in the horizontal direction during operation, thereby ensuring the accuracy of the detection results.

[0035] In some embodiments, Figure 1 As shown, the upper part of the base 1 is a plane, and the rubber isolator 13 is arranged at the center of the base 1. A plurality of first slide groove groups are evenly distributed on the base 1 around the center of the base 1, and the limiting mechanism includes a plurality of limiting plates 2 and a fixing assembly. Each limiting plate 2 is arranged above the first slide groove group, and each limiting plate 2 is provided with a second slide groove group opposite to the first slide groove group. The fixing assembly runs through the first slide groove group and the second slide groove group. The limiting plate 2 can be adjusted to the distance from the center of the base 1 under the limitation of the first slide groove group and the second slide groove group to adapt to the rubber isolator 13 of different sizes. Specifically, when adjusting the position of the limiting plate 2, each limiting plate 2 needs to be adjusted to contact the rubber isolator 13. The fixing assembly is configured to fix the limiting plate 2 to the base 1 after the position of the limiting plate 2 is determined, so that the limiting plate 2 can play a limiting role.

[0036] In some embodiments, a reference circle is made with the center of the base 1 as the center, the first slide groove group includes two parallel first slide grooves 14, the second slide groove group includes two parallel second slide grooves 15, and the extension direction of each first slide groove 14 and each second slide groove 15 is parallel to the radial line of the reference circle. Through the setting of the first slide groove 14 and the second slide groove 15, the adjustable distance and adjustable direction of the limit plate 2 can be limited.

[0037] In some embodiments, the fixing assembly includes a locking bolt 3 and a locking nut 4. The locking bolt 3 passes through the first slide groove 14 and the second slide groove 15 from bottom to top, and the locking nut 4 is threadedly matched with the locking bolt 3. After the position of the limit plate 2 is determined, the locking nut 4 is tightened, and when the position of the limit plate 2 needs to be adjusted, the locking nut 4 is loosened. The locking bolt 3 and the locking nut 4 are both universal national standard parts, which are simple in cost and easy to operate. In addition, the rubber isolator 13 can be limited in the same way by adopting structures such as a bolt-tightening ejector pin structure, or by adopting a method such as directly fixing the bottom plate 8 of the rubber isolator 13 to the base 1 with bolts.

[0038] In some embodiments, the upper surface of the base 1 is square, and its corners are chamfered. There are four threaded holes 17, which are distributed at the four corners of the base 1, and there are four first slide groove groups, each of which is between two adjacent circular holes 16. The overall structure is compact and evenly distributed, which can play a good limiting effect on the rubber isolator 13.

[0039] In some embodiments, the upper and lower surfaces of the bottom plate 8 of the top cover 6 are square, and the corners thereof are chamfered. The outer contour of the top plate 7 of the top cover 6 is aligned with the outer contour of the bottom plate 8, and there are four circular holes 16 distributed at the four corners of the top cover 6. Correspondingly, that is to say, there are four pre-tightening bolts 5, which are evenly distributed around the rubber isolator 13. There are four strain gauge sensors 10, and the four strain gauge sensors 10 are respectively arranged at the four corners of the top cover 6. The acquisition transmission cable 11 connects the four strain gauge sensors 10 in series and then connects them to the interface of the visualization module 12 through the connection interface. In addition, the number and position of the strain gauge sensors 10 can also be adjusted as needed.

[0040] In some embodiments, the force applying mechanism may also include a combination of one or more of a hydraulic drive mechanism, a pneumatic device, and a rack and pinion device.

[0041] The second aspect of the present invention provides a method for visualizing creep pre-release of a rubber vibration isolator of a locomotive diesel generator set, which is implemented based on a visualizing creep pre-release device of a rubber vibration isolator of a locomotive diesel generator set in any of the above embodiments, and comprises the following steps: S1, placing the rubber vibration isolator 13 on the upper part of the base 1; S2, applying a downward force to the rubber isolator 13 using a force applying mechanism; S3, when the pressure detection and visualization mechanism detects that the pressure value applied by the force-applying mechanism reaches a preset pressure value, the device starts to stand still, and monitors the pressure value change in real time during the standing still process; S4, when the pressure detection and visualization mechanism detects that the pressure value decreases, the action height of the rubber isolator 13 is adjusted to maintain the pressure value at a preset value; S5, after the static state is completed, the compression degree of the rubber vibration isolator 13 is obtained.

[0042] Furthermore, the working principle and detailed operation method of the visualized creep pre-release device of the rubber vibration isolator of the locomotive diesel generator set of the present invention are as follows: (1) Place the rubber isolator 13 at the center of the base 1 (such as Figure 7 as shown).

[0043] (2) Adjust the position of each limit plate 2 so that it fits with the bottom plate 8 of the rubber isolator 13, and then tighten the locking nut (such as Figure 8 as shown).

[0044] (3) The top cover 6 is set above the rubber vibration isolator 13, and the visualization module 12 is installed on the top cover 6, and the strain gauge sensor 10 and the visualization module 12 are connected together using the acquisition transmission cable 11 (such as Fig. 9 as shown).

[0045] (4) Screw in four pre-tightening bolts 5 respectively; specifically, first insert the pre-tightening bolts 5 from the round holes 16 at the four corners of the top cover 6, and then manually screw the pre-tightening bolts 5 into the threaded holes 17 at the four corners of the base 1 (such as Fig.10 as shown).

[0046] (5) Calculate the torque value required for a single pre-tightening bolt 5 (corresponding to the load-bearing condition of the rubber isolator 13 in actual application). Specifically, calculate the tightening torque required for a single pre-tightening bolt 5 according to formula (1).

[0047] M=(K×D×F) / NFormula (1) Where: M is the tightening torque required for a single pre-tightening bolt 5, in Nm; K is the thread tightening coefficient, which can be 0.15 in this specific embodiment according to engineering experience; D is the nominal diameter of the pre-tightening bolt 5, in m, which is 0.2 in this specific embodiment; F is the pre-tightening force required by the pre-tightening bolt 5, which can be converted from the pressure required to be borne by the vibration isolator, and the unit is N. In this specific embodiment, it is 5833 N; N is the number of the pre-tightening bolts 5 , which is 4 in this specific embodiment. It can be calculated that the tightening torque of a single pre-tightening bolt 5 is 175 Nm.

[0048] (6) Fig.11 As shown, the four pre-tightening bolts 5 are tightened evenly in a diagonal alternating order until the tightening torque is 175 Nm.

[0049] (7) When the pressure value on the display screen shows 5833N, stop tightening the pre-tightening bolt 5 and check the sinking scale of each pre-tightening bolt 5. If there is a difference in the sinking scales of each pre-tightening bolt 5, appropriately adjust the screw-in depth of one or several pre-tightening bolts 5 so that the four corners of the rubber isolator 13 bear the force evenly at the given pressure value.

[0050] (8) Start to let it stand and monitor the pressure value changes during the standing process. If it decreases, tighten the pre-tightening bolts 5 in time. After the standing is completed, read the average of the sinking scales of the four pre-tightening bolts 5 corresponding to the four corners of the rubber isolator 13, which is the adjustment gasket thickness value when the rubber isolator 13 is officially installed under the diesel generator set.

[0051] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A visualized creep pre-release device for rubber vibration isolators of a locomotive diesel generator set, characterized in that: include: A base (1), the upper portion of the base (1) being used to place a rubber vibration isolator (13); A force applying mechanism, the force applying mechanism being configured to apply a downward force to the rubber vibration isolator (13), and the magnitude of the applied force is adjustable; The pressure detection and visualization mechanism is arranged on the force-applying mechanism and is used for real-time detection of the pressure applied by the force-applying mechanism and displaying the pressure value.

2. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 1 is characterized in that: The circumferential edge of the base (1) is evenly distributed with a plurality of threaded holes (17); the force-applying mechanism comprises a top cover (6) and a force-applying member; the top cover (6) is detachably arranged above the rubber vibration isolator (13), and the circumferential edge of the top cover (6) is provided with a plurality of circular holes (16) arranged opposite to the plurality of threaded holes (17); the force-applying member comprises a plurality of pre-tightening bolts (5), each pre-tightening bolt (5) is inserted into the circular hole (16) and the lower end is threadedly connected to the threaded hole (17).

3. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 1 is characterized in that: Each pre-tightening bolt (5) is provided with a scale, and the scale is used to indicate the sinking depth of the pre-tightening bolt (5).

4. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 2 is characterized in that: The top cover (6) comprises a bottom plate (8) and a top plate (7); the top plate (7) is arranged on the bottom plate (8) and connected via a connecting piece (9); a cavity is arranged between the top plate (7) and the bottom plate (8); the pressure detection and visualization mechanism comprises a strain gauge sensor (10), a visualization module (12) and a data acquisition transmission cable (11); the strain gauge sensor (10) is arranged in the cavity, the visualization module (12) is arranged on the top plate (7) and is used to display the pressure value; the data acquisition transmission cable (11) is configured to connect the strain gauge sensor (10) and the visualization module (12) via electrical signals.

5. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 4 is characterized in that: It also comprises a limiting mechanism, which is arranged on the base (1) and distributed along the circumference of the rubber vibration isolator (13) and is used to limit the horizontal position of the rubber vibration isolator (13).

6. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 5 is characterized in that: The upper part of the base (1) is a plane, and the rubber isolator (13) is arranged at the center of the base (1); a plurality of first slide groove groups are evenly distributed on the base (1) around the center of the base (1); the limiting mechanism comprises a plurality of limiting plates (2) and a fixing assembly, each limiting plate (2) is arranged above the first slide groove group, and each limiting plate (2) is provided with a second slide groove group opposite to the first slide groove group, the fixing assembly runs through the first slide groove group and the second slide groove group, and the limiting plate (2) can be adjusted to a distance from the center of the base (1) under the limitation of the first slide groove group and the second slide groove group; the fixing assembly is configured to fix the limiting plate (2) to the base (1) after the position of the limiting plate (2) is determined.

7. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 6 is characterized in that: A reference circle is made with the center of the base (1) as the center, the first slide groove group includes two parallel first slide grooves (14), the second slide groove group includes two parallel second slide grooves (15), and the extension direction of each first slide groove (14) and each second slide groove (15) is parallel to the radial line of the reference circle.

8. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 6 is characterized in that: The fixing assembly comprises a locking bolt (3) and a locking nut (4); the locking bolt (3) passes through the first sliding groove (14) and the second sliding groove (15) in sequence from bottom to top, and the locking nut (4) is threadably matched with the locking bolt (3).

9. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 6 is characterized in that: The upper surface of the base (1) is square, and its corners are chamfered; there are four threaded holes (17), which are distributed at four corners of the base (1); there are four first slide groove groups, and each first slide groove group is located between two adjacent circular holes (16).

10. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 9, characterized in that: The upper and lower surfaces of the bottom plate (8) of the top cover (6) are square, and the corners thereof are chamfered; the outer contour of the top plate (7) of the top cover (6) is aligned with the outer contour of the bottom plate (8); there are four circular holes (16), which are distributed at the four corners of the top cover (6); there are four strain gauge sensors (10), and the four strain gauge sensors (10) are respectively arranged at the four corners of the top cover (6); the acquisition transmission cable (11) connects the four strain gauge sensors (10) in series and then connects them to the interface of the visualization module (12) through a connection interface.

11. The visualized creep pre-release device for rubber vibration isolators of locomotive diesel generator sets according to claim 1, characterized in that: The force applying mechanism includes a hydraulic drive mechanism, a pneumatic device, a gear rack device or a combination of one or more.

12. A visual creep pre-release method for rubber vibration isolators of a locomotive diesel generator set, characterized in that: The implementation of the visualized creep pre-release device for the rubber vibration isolator of a locomotive diesel generator set according to any one of claims 1 to 11 comprises the following steps: S1, placing a rubber vibration isolator (13) on the upper part of the base (1); S2, using a force applying mechanism to apply a downward force to the rubber vibration isolator (13); S3, when the pressure detection and visualization mechanism detects that the pressure value applied by the force-applying mechanism reaches a preset pressure value, the device starts to stand still, and monitors the pressure value change in real time during the standing still process; S4, when the pressure detection and visualization mechanism detects that the pressure value decreases, the action height of the rubber vibration isolator (13) is adjusted to maintain the pressure value at a preset value; S5, after the static state is completed, the compression degree of the rubber vibration isolator (13) is obtained.

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