Tension testing mechanism

Abstract

The utility model relates to the technical field of motor testing, in particular to a tension testing mechanism which comprises an outer frame, an inner frame, a first sliding plate and a weight sensor, the first sliding plate is vertically arranged in the outer frame in a sliding mode, and the weight sensor is located below the first sliding plate. The inner frame is vertically arranged on the outer frame in a sliding mode, the bottom end of the inner frame extends downwards into the outer frame, and the bottom end of the inner frame penetrates through the first sliding plate and is connected with the weight sensor; the testing electric cylinder is connected to the top of the outer frame, a first movable rod of the testing electric cylinder is connected with the first sliding plate, and a spring is arranged on the first sliding plate and used for pushing the top end of the inner frame. The motor tension tester is simple to operate and convenient to test, only a to-be-tested motor needs to be assembled on the test electric cylinder during tension test, additional assembly procedures are not needed, and meanwhile, a combined structure of the inner frame and the outer frame is adopted, so that the motor tension tester is small in overall size, light in weight, convenient to carry and convenient to transfer and use back and forth among different working sites.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor test technical field, especially pull test mechanism of a kind of. BACKGROUND

[0002] Stepping motor plays a key role in a variety of industrial equipment and systems, and its stability and reliability of performance are directly related to the operation effect of the whole system. Pull test is one of the important means to evaluate the performance of stepping motor. Through pull test, the performance of stepping motor in terms of output torque, response time, stability and durability under load can be understood. This is of great significance to ensure the normal operation of stepping motor in various application scenarios and prolong its service life. Especially in occasions where position, speed and acceleration need to be accurately controlled, such as automated production lines, robot systems, CNC machine tools and other fields, pull test of stepping motor is indispensable.

[0003] The current motor pull test tool, such as the Chinese utility model patent with publication number CN209910861U, discloses a motor pull test equipment. When testing the motor pull, the motor is fixed by the clamping assembly. The output end of the motor is set in the through hole of the turntable and is fixed. The motor power is turned on. The output end of the motor drives the turntable to rotate. The pull rope is wound on the circumference of the turntable and then pulls down the output end of the spring scale. The reading of the spring scale is recorded to complete the test of the motor pull. However, assembly is required before testing. The motor needs to be fixed on the clamping assembly. Then the turntable is connected with the motor. The pull rope and the spring scale are installed. The spring scale needs to be adjusted. The operation is troublesome and the process is complex. The test structure is large in size, which is not convenient for carrying and transferring. UTILITY MODEL CONTENT

[0004] The utility model aims at the problems in the background art and provides a pull test mechanism.

[0005] The utility model provides a pull test mechanism, which comprises an outer frame, an inner frame, a first sliding plate and a weight sensor. The first sliding plate is vertically slidably arranged inside the outer frame. The weight sensor is located below the first sliding plate.

[0006] The inner frame is vertically slidably arranged on the outer frame, and the bottom end of the inner frame extends downward into the inner frame of the outer frame. The bottom end of the inner frame penetrates the first sliding plate and is connected with the weight sensor.

[0007] It further comprises a test electric cylinder connected to the top of the outer frame. The first movable rod of the test electric cylinder is connected with the first sliding plate. The first sliding plate is further provided with a spring, which is used to push the top end of the inner frame.

[0008] The tension test mechanism of the present application assembles the motor to be tested on the test cylinder, the test cylinder is driven through the motor to be tested, so as to convert the rotary motion of the motor to be tested into the linear motion of the test cylinder, when the tension test of the motor to be tested is carried out, the motor to be tested drives the test cylinder, the first movable rod of the test cylinder is retracted upwards to drive the first sliding plate to move upwards, the first sliding plate is extruded and pushed when moving upwards, the spring is pushed after being pressed, the inner frame top end is pushed, the inner frame moves upwards, since the inner frame bottom end is connected with the weight sensor, the inner frame moves upwards to exert tension on the weight sensor, so as to realize the tension test of the motor to be tested, the tension test mechanism of the present application is simple in operation and convenient in test, when the tension test is carried out, the motor to be tested only needs to be assembled on the test cylinder, without additional assembly process, at the same time, the combination structure of the inner and outer frames is adopted, the whole volume is small, the quality is light, and the tension test mechanism is convenient to carry, so as to be transferred between different working sites.

[0009] Preferably, the outer frame comprises a vertically arranged sliding rod, the upper end of the sliding rod is connected with an upper panel, the lower end of the sliding rod is connected with a lower panel, and the first sliding plate is slidingly arranged on the sliding rod.

[0010] Preferably, the inner frame comprises a guide column, a synchronous plate and a support column, the guide column and the support column are parallel to the sliding rod, and the synchronous plate is located above the upper panel.

[0011] The guide column is slidingly arranged on the upper panel, one end of the guide column is connected with the synchronous plate, and the other end of the guide column penetrates through the first sliding plate and is connected with the weight sensor.

[0012] The support column is slidingly arranged on the upper panel, one end of the support column is connected with the synchronous plate, and the other end of the support column abuts against one end of the spring away from the first sliding plate.

[0013] Preferably, the support column comprises a support rod and a circular truncated cone body connected with each other, the circular truncated cone body is located between the first sliding plate and the upper panel, and the support rod penetrates through the upper panel and is connected with the synchronous plate.

[0014] The upper end of the spring abuts against the circular truncated cone body, and the lower end of the spring abuts against the first sliding plate.

[0015] Preferably, the support column further comprises a mounting rod, and the mounting rod is connected with one end of the circular truncated cone body close to the first sliding plate.

[0016] The spring is partially sleeved on the mounting rod.

[0017] Preferably, the support column further comprises an extension rod, a first threaded hole is formed in one end of the mounting rod away from the circular table body, and the extension rod is screwed into the first threaded hole.

[0018] A first through hole is formed in the first sliding plate, and the extension rod passes through the first through hole.

[0019] Preferably, the support column is provided with the guide column on both sides.

[0020] Preferably, a second sliding plate is arranged on the sliding rod and located below the first sliding plate.

[0021] The weight sensor is arranged on the second sliding plate, and the second sliding plate is connected to the lower panel through an adjusting device.

[0022] Preferably, a displacement sensor is further arranged on the test cylinder, and the displacement sensor is used to measure the displacement stroke of the test cylinder.

[0023] Preferably, a measuring rod of the displacement sensor is connected to the first movable rod through a fixing plate.

[0024] Compared with the prior art, the utility model has the beneficial effects of:

[0025] The tension test mechanism of the application assembles the motor to be tested on the test cylinder, drives the test cylinder through the motor to be tested, converts the rotary motion of the motor to be tested into the linear motion of the test cylinder, drives the test cylinder through the motor to be tested when the tension of the motor to be tested is tested, and the first movable rod of the test cylinder is retracted upwards to drive the first sliding plate to move upwards. When the first sliding plate moves upwards, the spring is extruded and pushed, the spring pushes the top end of the inner frame after being extruded, the inner frame moves upwards, the inner frame moves upwards, and the weight sensor is connected to the bottom end of the inner frame. The tension test mechanism of the application has the advantages of simple operation, convenient testing, and no need for additional assembly process when the tension test is performed. Meanwhile, the combination structure of the inner and outer frames has the advantages of small overall volume, light weight, and convenient carrying, so that the tension test mechanism can be transferred between different working sites. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the application.

[0027] Figure 2 It is a cooperation schematic view of the inner frame and the test cylinder.

[0028] Figure 3 is a schematic view of the inner frame.

[0029] Figure 4 is a schematic view of the outer frame.

[0030] Figure 5 is a schematic view of the cooperation of the inner frame and the weight sensor.

[0031] Figure 6 is a sectional view of the present application (omitting the spring).

[0032] Figure 7 is a schematic view of a preferred structure of the adjusting device.

[0033] Figure 8 is a schematic view of the support column.

[0034] Figure 9 is a schematic view of the displacement sensor.

[0035] Figure 10 is a schematic view of another preferred structure of the adjusting device.

[0036] Figure 11 is a partial enlarged view of A of Figure 10

[0037] Marked in the figure:

[0038] 1-outer frame, 11-upper panel, 111-moving groove, 12-sliding rod, 13-lower panel, 2-inner frame, 21-guide column, 22-synchronization plate, 23-support column, 231-support rod, 232-circular table body, 233-mounting rod, 2331-first threaded hole, 234-elongated rod, 3-first sliding plate, 31-first through hole, 4-weight sensor, 5-test electric cylinder, 51-cylinder structure, 52-first movable rod, 6-spring, 7-first linear bearing, 8-second sliding plate, 81-second threaded hole, 9-displacement sensor, 91-measuring rod, 92-housing, 10-motor to be tested, 20-load plate, 30-adjusting screw rod, 40-first pressing head, 401-second through hole, 50-baffle, 501-placing groove, 60-second pressing head, 70-driven electric cylinder, 701-second movable rod, 80-rotation channel, 90-second linear bearing, 100-fixed plate. DETAILED DESCRIPTION

[0039] The present application will be further described in detail below in connection with specific embodiments. However, it should not be understood that the above-mentioned subject matter of the present application is limited to the following embodiments only, and any technology realized based on the content of the present application falls within the scope of the present application.

[0040] ​In the description of the embodiments of the present application, the terms of orientation or position relationship such as "upper", "lower", "left", "right", "center", "inner", "outer" and the like are expressed based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / device / apparatus of the present application is usually used. These terms of orientation or position relationship are only for the convenience of describing the present application or simplifying the description of the embodiments, and for the convenience of the technicians to quickly understand the scheme, and therefore cannot be understood as indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific position relationship, and therefore cannot be understood as limiting the present application.

[0041] In addition, the terms "horizontal", "vertical", "overhanging", "parallel", "coaxial" and the like do not mean that the corresponding device / component / element must be absolutely horizontal or vertical or overhanging or parallel or coaxial, but can be slightly inclined or deviated, as long as it does not affect the normal function of the related component. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined; "coaxial" means that two components are coaxially arranged as much as possible, and are moved in the same or approximately coaxial manner when the relative position changes. Alternatively, it can be simplified to understand that the corresponding device / component / element is arranged in the "horizontal", "vertical", "overhanging", "parallel", "coaxial" direction, and can have an error / deviation of ±10% relative to the corresponding direction, more preferably an error / deviation of ±8% or less, more preferably an error / deviation of ±6% or less, more preferably an error / deviation of ±5% or less, and more preferably an error / deviation of ±4% or less. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the present application scheme.

[0042] In addition, the terms "first", "second", "third" and the like in the description of the embodiments of the present application are only used to distinguish the same or similar components, and should not be understood as emphasizing or implying the relative importance of the specific components.

[0043] In addition, in the description of the embodiments of the present application, "several", "a plurality of", "several" represent at least 2. It can be 2, 3, 4, 5, 6, 7, 8, 9, etc. in any case, and even more than 9.

[0044] Furthermore, in the description of the technical scheme of the utility model, unless otherwise expressly specified / limited / limited, the term "set" "installation" "connected" "connected" "provided with" "laid" "arranged" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected, which can be welding, riveting, bolting, screwing and other commonly used connecting means in the art. The connection can be mechanical connection, electrical connection or communication connection; it can be directly connected, or indirectly connected through an intermediate medium, or connected inside two elements.

[0045] Embodiment 1

[0046] As shown in Figures 1-6 The tension testing mechanism described in this embodiment comprises an outer frame 1, an inner frame 2, a first sliding plate 3 and a weight sensor 4, the first sliding plate 3 is vertically slidingly arranged inside the outer frame 1, and the weight sensor 4 is located below the first sliding plate 3.

[0047] The inner frame 2 is vertically slidingly arranged on the outer frame 1, and the bottom end of the inner frame 2 extends downward into the outer frame 1, the bottom end of the inner frame 2 penetrates the first sliding plate 3 and is connected with the weight sensor 4.

[0048] It also comprises a test electric cylinder 5 connected to the top of the outer frame 1, the first movable rod 52 of the test electric cylinder 5 is connected with the first sliding plate 3, and the first sliding plate 3 is also provided with a spring 6, which is used to push the top end of the inner frame 2.

[0049] The tension testing mechanism of this embodiment, the motor to be tested 10 is assembled on the test electric cylinder 5, the test electric cylinder 5 is driven by the motor to be tested 100, so as to convert the rotary motion of the motor to be tested 100 into the linear motion of the test electric cylinder 5, when the tension test of the motor to be tested 10 is carried out, the test electric cylinder 5 is driven by the motor to be tested 100, the first movable rod 52 of the test electric cylinder 5 is retracted upward to drive the first sliding plate 3 to move upward, the first sliding plate 3 is pressed and pushed when moving upward, the spring 6 is pushed after being pressed, the top end of the inner frame 2 is pushed, the inner frame 2 moves upward, since the bottom end of the inner frame 2 is connected with the weight sensor 4, the inner frame 2 moves upward and exerts tension on the weight sensor 4, so as to realize the tension test of the motor to be tested 10, the tension testing mechanism of this embodiment is simple in operation and convenient in testing, when the tension test is carried out, the motor to be tested 10 only needs to be assembled on the test electric cylinder 5, without additional assembly process, at the same time, the combination structure of inner and outer frames is adopted, which has small overall volume and light weight, and is convenient to carry, so as to be transferred between different working sites.

[0050] In an optional embodiment, as Figure 2As shown, the outer frame 1 comprises vertically arranged slide rods 12, the upper ends of the slide rods 12 are connected with the upper panel 11, the lower ends of the slide rods 12 are connected with the lower panel 13, and the first slide plate 3 is slidingly arranged on the slide rods 12.

[0051] In an optional embodiment, as shown in Figure 3 , the inner frame 2 comprises guide columns 21, a synchronization plate 22 and support columns 23, the guide columns 21 and the support columns 23 are parallel to the slide rods 12, and the synchronization plate 22 is located above the upper panel 11;

[0052] The guide columns 21 are slidingly arranged on the upper panel 11, one end of the guide columns 21 is connected with the synchronization plate 22, and the other end of the guide columns 21 penetrates through the first slide plate 3 and is connected with the weight sensor 4;

[0053] The support columns 23 are slidingly arranged on the upper panel 11, one end of the support columns 23 is connected with the synchronization plate 22, and the other end of the support columns 23 abuts against one end of the spring 6 away from the first slide plate 3.

[0054] When the motor 10 to be tested is subjected to a tension test, as shown in Figure 2 , the motor 10 to be tested drives the test cylinder 5 to work, the test cylinder 5 drives the first slide plate 3 to move upward along the slide rods 12, the first slide plate 3 extrudes and pushes the spring 6 upward when moving, the spring 6 pushes the support columns 23 upward after being stressed, the support columns 23 push the synchronization plate 22 upward, the synchronization plate 22 drives the guide columns 21 to move upward, and since the guide columns 21 are connected with the weight sensor 4, the guide columns 21 exert a tension on the weight sensor 4, and the transmission route of the tension is: the test cylinder 5 is transmitted to the first slide plate 3, the first slide plate 3 is transmitted to the spring 6, the spring 6 is transmitted to the support columns 23, the support columns 23 are transmitted to the synchronization plate 22, the synchronization plate 22 is transmitted to the guide columns 21, and the guide columns 21 are transmitted to the weight sensor 4.

[0055] In an optional embodiment, the support columns 23 are provided with guide columns 21 on both sides.

[0056] In an optional embodiment, the support columns 23 and the guide columns 21 located on the same side are arranged in an array.

[0057] In one or more embodiments, as shown in Figure 5 , Figure 8 , the support columns 23 comprise support rods 231 and circular truncated cone bodies 232 connected with each other, the circular truncated cone bodies 232 are located between the first slide plate 3 and the upper panel 11, and the support rods 231 penetrate through the upper panel 11 and are connected with the synchronization plate 22;

[0058] The upper end of the spring 6 abuts against the circular truncated cone body 232, and the lower end of the spring 6 abuts against the first slide plate 3.

[0059] When the tension test is performed, the first sliding plate 3 is pressed upward and pushes the spring 6, so that the spring 6 is moved upward, the spring 6 pushes the circular truncated cone body 232 when the spring 6 is moved upward, so that the support rod 231 connected with the circular truncated cone body 232 is moved upward, so that the support rod 231 drives the guide column 21 to move upward through the synchronous plate 22;

[0060] In an optional embodiment, as shown in Figure 5 、 Figure 8 The support column 23 further comprises a mounting rod 233, and the mounting rod 233 is connected to one end of the circular truncated cone body 232 close to the first sliding plate 3.

[0061] The spring 6 is partially sleeved on the mounting rod 233.

[0062] By partially sleeving the spring 6 on the mounting rod 233, one end of the spring 6 abuts against the circular truncated cone body 232, and the other end of the spring 6 abuts against the first sliding plate 3.

[0063] The support rod 231 penetrates the upper panel 11 and is connected with the synchronous plate 22, the circular truncated cone body 232 and the mounting rod 233 connected with the support rod 231 are located between the first sliding plate 3 and the upper panel 11, one end of the spring 6 is sleeved on the mounting rod 233 and abuts against the circular truncated cone body 232, and the other end of the spring 6 abuts against the first sliding plate 3, and through the mounting rod 233, the spring 6 and the circular truncated cone body 232 are prevented from falling off

[0064] In an optional embodiment, as shown in Figure 5 The support column 23 further comprises an extension rod 234, and a first threaded hole 2331 is formed in one end of the mounting rod 233 away from the circular truncated cone body 232, and the extension rod 234 is screwed in the first threaded hole 2331.

[0065] A first through hole 31 is formed in the first sliding plate 3, and one end of the extension rod 234 away from the mounting rod 233 penetrates the first through hole 31.

[0066] Through the above arrangement, the extension rod 234 at the bottom of the mounting rod 233 penetrates the internal region of the spring 6 and penetrates the first sliding plate 3, and in the tension test, when the spring 6 is bent, the extension rod 234 can contact the spring 6, so as to limit the spring 6, avoid the spring 6 from falling out between the circular truncated cone body 232 and the second sliding plate 8, so as to ensure that the spring 6 is located between the support column 23 and the first sliding plate 3, so that the spring 6 can play its test compression and stress effect, and the safety of the test system is ensured.

[0067] In an optional embodiment, a first linear bearing 7 is arranged on the first sliding plate 3, and the slide rod 12 is assembled on the first linear bearing 7.

[0068] By setting the first linear bearing 7, the slide rod 12 passes through the first linear bearing 7 and cooperates with the first linear bearing 7, so that the slide rod 12 and the first slide plate 3 can slide relative to each other, so that the first slide plate 3 can move upwards along the slide rod 12 under the driving of the test cylinder 5 during the tensile test.

[0069] In an optional embodiment, as shown in Figure 2 The upper panel 11 is provided with a second linear bearing 90, and the guide column 21 is assembled on the second linear bearing 90.

[0070] By setting the second linear bearing 90, the guide column 21 passes through the second linear bearing 90 and cooperates with the second linear bearing 90, so that the guide column 21 can slide relative to the upper panel 11, so that the first slide plate 3 can move upwards along the slide rod 12 under the driving of the test cylinder 5 during the tensile test, and the first slide plate 3 compresses the spring 6 and pushes the spring 6 to move upwards when the first slide plate 3 moves upwards, the spring 6 pushes the support column 23 to move upwards, and the support column 23 drives the guide column 21 to move upwards through the synchronous plate 22, so that the guide column 21 can slide upwards under the driving of the test cylinder 5, so that the guide column 21 can exert a pulling force on the load plate 20.

[0071] In one or several embodiments, as shown in Figure 9 Further comprising a displacement sensor 9, the displacement sensor 9 is installed on the test cylinder 5, and the displacement sensor 9 is used to measure the displacement stroke of the test cylinder 5.

[0072] The displacement sensor 9 is used to measure the displacement change of the test cylinder 5 in real time, so as to determine the movement stroke of the motor, and by combining the displacement data with the force value measured by the force sensor, the thrust or pulling force performance of the motor at different displacements can be calculated,

[0073] Further, as shown in Figure 9 The housing 92 of the displacement sensor 9 is connected to the cylinder structure 51 of the test cylinder 5, the measuring rod 91 of the displacement sensor 9 penetrates the upper panel 11 and is connected to the first movable rod 52 of the test cylinder 5 through the fixing plate 100, and when the first movable rod 52 of the test cylinder 5 is elongated and pushed or contracted and pulled, the measuring rod 91 of the displacement sensor 9 moves together with the first movable rod 52.

[0074] Further, the two ends of the fixing plate 100 are sleeved on the first movable rod 52 of the test cylinder 5 and the measuring rod 91 of the displacement sensor 9 respectively, and then the two ends of the fixing plate 100 are fixed with the first movable rod 52 and the measuring rod 91 respectively by bolts, wherein the third through hole and the fourth through hole are formed in the two ends of the fixing plate 100, the first movable rod 52 passes through the third through hole and is fixed on the fixing plate 100 by a bolt, and the measuring rod 91 passes through the fourth through hole and is fixed on the fixing plate 100 by a bolt.

[0075] Further, as shown in Figure 4 , the upper plate 11 is provided with a moving groove 111 capable of accommodating the fixing plate 100, the measuring rod 91 and the first movable rod 52.

[0076] In one or more embodiments, as shown in Figure 6 , a second sliding plate 8 is further included, the second sliding plate 8 is slidingly arranged on the sliding rod 12, and the second sliding plate 8 is located below the first sliding plate 3;

[0077] The weight sensor 4 is installed on the second sliding plate 8, the second sliding plate 8 is connected with the lower plate 13 through an adjusting device, and the adjusting device is used to adjust the interval between the second sliding plate 8 and the lower plate 13.

[0078] In an optional embodiment, as shown in Figure 10 , Figure 11 , the adjusting device includes a driving cylinder 70, the driving cylinder 70 is connected to the lower plate 13, and the driving cylinder 70 is used to drive the second sliding plate 8 to move relative to the lower plate 13.

[0079] When it is necessary to adjust the interval between the second sliding plate 8 and the lower plate 13, the second sliding plate 8 is driven to move relative to the lower plate 13 by the driving cylinder 70, so as to change the interval therebetween and adjust the initial elastic deformation amount of the spring 6.

[0080] Further, the driving cylinder 70 is used to drive the second sliding plate 8 to move relative to the lower plate 13 along the length direction of the sliding rod 12.

[0081] In an optional embodiment, as shown in Figure 11 , the adjusting device includes a second pressure head 60 and a driving cylinder 70, the second pressure head 60 is fixed on the side of the second sliding plate 8 away from the weight sensor 4, the driving cylinder 70 is connected to the lower plate 13, and the second movable rod 701 of the driving cylinder 70 is fixedly connected with the second pressure head 60.

[0082] The second pressure head 60 is driven to move by the second movable rod 701 of the driving cylinder 70, so as to drive the second sliding plate 8 to move and adjust the interval between the second sliding plate 8 and the lower plate 13.

[0083] By setting the active electric cylinder 70, the gap between the second slide plate 8 and the lower panel 13 can be automatically adjusted during testing. At the same time, the active electric cylinder 70 can also quickly adjust the gap between the second slide plate 8 and the lower panel 13, that is, quickly adjust to the maximum test tension or maximum test thrust to measure the instantaneous data of the motor.

[0084] In an optional implementation, the displacement sensor 9 is preferably a rod-type linear displacement sensor.

[0085] In optional embodiments, the linear bearings used in this embodiment can be of the LM series, LME series, etc., and the specific dimensions are selected according to the actual situation.

[0086] In an optional implementation, the weight sensor 4 is a spoke-type weighing sensor.

[0087] Example 2

[0088] like Figure 6 , Figure 7 As shown, based on Example 1, the tensile testing mechanism described in this embodiment differs from that in Example 1 in that:

[0089] The adjustment device includes a first pressure head 40, which is connected to the lower panel 13. An adjustment screw 30 is also rotatably mounted on the first pressure head 40. The adjustment screw 30 is used to drive the second slide plate 8 to move relative to the lower panel 13.

[0090] When it is necessary to adjust the gap between the second slide plate 8 and the lower panel 13, the second slide plate 8 is driven to move relative to the lower panel 13 by rotating the adjusting screw 30, thereby changing the gap between them and adjusting the initial elastic deformation of the spring 6.

[0091] Furthermore, the adjusting screw 30 is used to drive the second slide plate 8 to move relative to the lower panel 13 along the length direction of the slide bar 12.

[0092] In optional implementations, such as Figure 7 As shown, one end of the adjusting screw 30 passes through the first pressure head 40 and is bolted to the second slide plate 8.

[0093] The first pressure head 40 is mounted on the side of the lower panel 13 away from the second slide plate 8 by screws. A second through hole 401 is provided in the middle of the first pressure head 40, and a second threaded hole 81 is provided in the middle of the second slide plate 8. An adjusting screw 30 is rotatably mounted within the second through hole 401. Figure 7As shown, the head of the adjusting screw 30 abuts against the first pressing head 40, and the tail of the adjusting screw 30 passes through the first pressing head 40 and is threadedly connected in the second threaded hole 81 of the second sliding plate 8, when it is necessary to adjust the interval between the second sliding plate 8 and the lower panel 13, the matching length of the second sliding plate 8 and the adjusting screw 30 is adjusted by rotating the adjusting screw 30, so that the second sliding plate 8 is moved, and the interval adjustment between the second sliding plate 8 and the lower panel 13 is realized.

[0094] In the embodiment, the adjusting screw 30 is a hexagonal head bolt, the adjusting screw 30 comprises a tail, a smooth rod and a head, the tail of the adjusting screw 30 is provided with threads for threadedly connecting with the second threaded hole 81 of the second sliding plate 8, when it is necessary to rotate the adjusting screw 30, the head of the adjusting screw 30 is rotated by a hexagonal wrench, and the interval adjustment between the second sliding plate 8 and the lower panel 13 is realized.

[0095] Further, as shown in the drawings, Figure 7 The adjusting device further comprises a baffle 50, the baffle 50 is installed on the side of the pressing head away from the lower panel 13, and the baffle 50 abuts against the adjusting screw 30.

[0096] The adjusting screw 30 is protected by the baffle 50, so as to avoid the adjusting screw 30 from being collided by other objects.

[0097] Further, as shown in the drawings, Figure 7 The baffle 50 is provided with a placing groove 501, the placing groove 501 matches the head of the adjusting screw 30, the head of the adjusting screw 30 is located in the placing groove 501, so that the baffle 50 is closely matched with the adjusting screw 30, and the baffle 50 can better protect the adjusting screw 30.

[0098] Further, a rotating channel 80 is arranged at the center of the bottom of the placing groove 501, the rotating channel 80 penetrates through the baffle 50, wherein the rotating channel 80 can accommodate a hexagonal wrench matched with the adjusting screw 30, that is, the hexagonal wrench passes through the rotating channel 80 and enters the placing groove 501, so as to facilitate the hexagonal wrench to butt joint with the adjusting screw 30, when it is necessary to adjust the interval between the second sliding plate 8 and the lower panel 13, the hexagonal wrench only needs to be inserted into the rotating channel 80 until the hexagonal wrench is matched with the adjusting screw 30, then the hexagonal wrench is twisted to drive the adjusting screw 30 to rotate, and the interval adjustment between the second sliding plate 8 and the lower panel 13 is realized.

[0099] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tensile testing mechanism, characterized by, The utility model provides a kind of weight sensor, including outer frame (1), inner frame (2), first slide plate (3) and weight sensor (4), the first slide plate (3) is vertically slidingly arranged in the outer frame (1) inside, and the weight sensor (4) is located below the first slide plate (3). The inner frame (2) is vertically slidingly arranged on the outer frame (1), and the bottom end of the inner frame (2) extends downward into the outer frame (1), and the bottom end of the inner frame (2) penetrates the first slide plate (3) and is connected with the weight sensor (4). It also includes a test cylinder (5) connected to the top of the outer frame (1), the first movable rod (52) of the test cylinder (5) is connected with the first slide plate (3), and the first slide plate (3) is also provided with a spring (6), which is used to push the top end of the inner frame (2).

2. A tensile testing machine according to claim 1, wherein The outer frame (1) includes a vertically arranged slide rod (12), the upper end of the slide rod (12) is connected with an upper panel (11), the lower end of the slide rod (12) is connected with a lower panel (13), and the first slide plate (3) is slidingly arranged on the slide rod (12).

3. A tensile testing machine according to claim 2, wherein The inner frame (2) includes a guide column (21), a synchronization plate (22) and a support column (23), the guide column (21) and the support column (23) are parallel to the slide rod (12), and the synchronization plate (22) is located above the upper panel (11). The guide column (21) is slidingly arranged on the upper panel (11), one end of the guide column (21) is connected with the synchronization plate (22), and the other end of the guide column (21) penetrates the first slide plate (3) and is connected with the weight sensor (4). The support column (23) is slidingly arranged on the upper panel (11), one end of the support column (23) is connected with the synchronization plate (22), and the other end of the support column (23) abuts against one end of the spring (6) away from the first slide plate (3).

4. A tensile testing machine according to claim 3, wherein The support column (23) includes a support rod (231) and a circular truncated cone body (232) connected with each other, the circular truncated cone body (232) is located between the first slide plate (3) and the upper panel (11), and the support rod (231) penetrates the upper panel (11) and is connected with the synchronization plate (22). The upper end of the spring (6) abuts against the circular truncated cone body (232), and the lower end of the spring (6) abuts against the first slide plate (3).

5. A tensile testing machine according to claim 4, wherein The support column (23) further includes a mounting rod (233), and the mounting rod (233) is connected to one end of the circular truncated cone body (232) close to the first slide plate (3). Part of the spring (6) is sleeved on the mounting rod (233).

6. A tensile testing machine according to claim 5, wherein The support column (23) further includes an extension rod (234), and one end of the mounting rod (233) away from the circular truncated cone body (232) is provided with a first threaded hole (2331), and the extension rod (234) is bolted in the first threaded hole (2331). The first sliding plate (3) is provided with a first through hole (31), and the elongated rod (234) passes through the first through hole (31) at one end away from the mounting rod (233).

7. The tension testing mechanism of claim 3, wherein, The support column (23) is provided with the guide column (21) on both sides.

8. The tension testing mechanism of claim 3, wherein, The second sliding plate (8) is slidably arranged on the sliding rod (12), and the second sliding plate (8) is located below the first sliding plate (3). The weight sensor (4) is mounted on the second sliding plate (8), the second sliding plate (8) is connected with the lower panel (13) through an adjusting device, and the adjusting device is used for adjusting the interval between the second sliding plate (8) and the lower panel (13).

9. A tensile testing machine according to any one of claims 1 to 8, wherein The displacement sensor (9) is mounted on the test electric cylinder (5), and the displacement sensor (9) is used for measuring the displacement stroke of the test electric cylinder (5).

10. A tensile testing machine according to claim 9, wherein The measuring rod (91) of the displacement sensor (9) is connected with the first movable rod (52) through a fixing plate (100).

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