CN214226262U - Structural mechanics teaching aid - Google Patents

Abstract

The utility model relates to a structural mechanics technical field just discloses a structural mechanics teaching aid, including fixed case, the inner chamber top fixed mounting of fixed case has the motor, the inner chamber bottom fixed mounting of fixed case has quantity to be two bracing pieces, the left of bracing piece is rotated and is connected with one end and runs through and extend to right-hand the lead screw in the bracing piece right side, the output of motor all is connected through the drive belt transmission with the outside of lead screw. This structural mechanics teaching aid possesses that the suitability is strong and can audio-visual observation mechanical properties change's advantage, has solved the mechanical properties of the unable audio-visual different positions of observing same atress object of current mechanics teaching aid when using, uses and has had certain limitation, and when fixed atress object, can't fix the centre gripping to the object of different shapes, the lower problem of suitability.

Description

Structural mechanics teaching aid

Technical Field

The utility model relates to a structural mechanics technical field specifically is a structural mechanics teaching aid.

Background

The structural mechanics is a branch of solid mechanics, and mainly studies the law of stress and force transmission of an engineering structure and the subject of how to optimize the structure, and is the subject of the students in the civil engineering major and the mechanical major.

The mechanical properties of the same atress object's of unable audio-visual observation different positions of current mechanics teaching aid when using, use and have certain limitation, and when fixed atress object, can't fix the centre gripping to the object of different shapes, the suitability is lower, so provides a structure mechanics teaching aid and solves the above-mentioned problem of proposing.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a structural mechanics teaching aid possesses the suitability strong and can audio-visually observe the advantage that mechanical properties changes, has solved the mechanical properties that current mechanics teaching aid can't audio-visual observation the different positions of same atress object when using, uses and has certain limitation, and when fixed atress object, can't fix the centre gripping to the object of different shapes, the lower problem of suitability.

(II) technical scheme

For the purpose that realizes that above-mentioned suitability is strong and can audio-visually observe the mechanical properties change, the utility model provides a following technical scheme: a structural mechanics teaching aid comprises a fixed box, wherein a motor is fixedly mounted at the top end of an inner cavity of the fixed box, two support rods are fixedly mounted at the bottom end of the inner cavity of the fixed box, a screw rod with one end penetrating through and extending to the right side of the support rod is rotatably connected at the left side of the support rod at the left side, the output end of the motor is in transmission connection with the outer part of the screw rod through a transmission belt, two thread sleeves with two outer threads are respectively positioned at one side of each of the two support rods, a vertical rod with one end penetrating through and extending to the top end of the fixed box is fixedly mounted at the top end of each thread sleeve, a movable sleeve is sleeved at the outer part of each vertical rod, a C-shaped seat is fixedly mounted at one opposite side of each of the two movable sleeves, and a threaded rod with one end penetrating through and extending to the inner side of the C-shaped seat is in threaded connection with the top end of the C-shaped seat, the utility model discloses a hydraulic pressure electric power transmission device, including C type seat, hydraulic pressure push rod, backup pad, electric putter, the bottom fixed mounting of threaded rod has the grip block, two the equal fixed mounting in one side of the back of the body of C type seat has the connecting plate, two the equal fixed mounting in one side of the back of the body of connecting plate back of the body has the electro-magnet, the top fixed mounting of fixed case has quantity to be two and is located the backup pad in one side of the back of the body of two montants respectively, the left the right-hand member fixed mounting of backup pad has hydraulic pressure push rod, hydraulic pressure push rod's output fixed mounting has the installing frame, the inner chamber top fixed mounting of installing frame has electric putter, electric putter's output fixed mounting has pressure sensor.

Preferably, the output fixed mounting of motor has first belt pulley, the outside fixed mounting of lead screw has the second belt pulley that is located under the first belt pulley, first belt pulley and second belt pulley all with driving belt looks adaptation.

Preferably, the inner chamber bottom fixed mounting of fixed case has quantity be two and be located two respectively the bracing piece is the guide bar of one side mutually away from the other side, the bottom fixed mounting of thread bush has sliding connection in the outside sliding sleeve of guide bar.

Preferably, the fixed case top is seted up quantity and is two through-holes, two the inside swing joint respectively of through-hole has two montants, the outer screw diameter of lead screw equallys divide into two sections, and the orientation of two sections outer screw diameters is opposite.

Preferably, the number of limiting grooves is two, and the number of limiting rods which are two and are matched with the limiting grooves are fixedly mounted on the inner side of the movable sleeve.

Preferably, the controller is fixedly mounted on the front surface of the supporting plate, the motor, the electromagnet, the hydraulic push rod, the electric push rod and the pressure sensor are all electrically connected with the controller, and the controller is a single chip microcomputer.

(III) advantageous effects

Compared with the prior art, the utility model provides a structural mechanics teaching aid possesses following beneficial effect:

the structure mechanics teaching aid can place a stressed object between opposite sides of two movable sleeves when in use, can select a clamp matched with the stressed object according to the shape of the stressed object when clamping the stressed object, can place the stressed object between the opposite sides of two C-shaped seats when the edge of the stressed object is rectangular, and starts a motor to operate in the forward direction, the output end of the motor drives a screw rod to rotate through a transmission belt, because the outer diameter of the screw rod is equally divided into two sections, the two threaded sleeves can move to the opposite sides at the moment, so that the two C-shaped seats move to one end of the stressed object, when the inner sides of the two C-shaped seats are completely contacted with the edge of the stressed object, the operation of the motor can be stopped, at the moment, a threaded rod can be rotated, so that the threaded rod drives a clamping plate to move downwards, thereby firmly clamping and the outer part of the stressed object, when the edge of the stressed object is in an irregular shape, the movable sleeve can be upwards pulled out, the movable sleeve is rotated to one hundred eighty degrees and is sleeved with the outer part of the vertical rod again, so that the stressed object can be placed between the opposite sides of the two electromagnets, the forward operation of the motor can be started according to the same method, when the edge electromagnets of the stressed object are contacted, the operation of the motor can be stopped, the electromagnets are electrified, the electromagnets are adsorbed on the outer part of the stressed object, the applicability of the stressed object can be enhanced when the stressed object is fixed by arranging two clamping modes, the electric push rod can be started after the stressed object is fixed, the electric push rod drives the pressure sensor to apply force to the stressed object, the change of the outer shape or structure of the stressed object can be observed, and the change can be connected with a mechanical analyzer to analyze stress strain, meanwhile, the pressure sensor can detect the size of the applied force, the applied force can be displayed through a screen on the controller, so that the relationship between the applied force size and the change of a stressed object can be more visually shown, meanwhile, the hydraulic push rod is arranged, the force can be applied to different positions of the object conveniently, and the mechanical property change observation device has the advantages of strong applicability and capability of visually observing the change of the mechanical property.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is a schematic view of the connection between the vertical rod and the movable sleeve of the present invention.

In the figure: 1. a fixed box; 2. an electric motor; 3. a support bar; 4. a screw shaft; 5. a drive belt; 6. a threaded sleeve; 7. a vertical rod; 8. a movable sleeve; 9. a C-shaped seat; 10. a threaded rod; 11. a clamping plate; 12. a connecting plate; 13. an electromagnet; 14. a support plate; 15. a hydraulic push rod; 16. installing a frame; 17. an electric push rod; 18. a pressure sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a structural mechanics teaching aid comprises a fixed box 1, a motor 2 is fixedly installed at the top end of an inner cavity of the fixed box 1, two support rods 3 are fixedly installed at the bottom end of the inner cavity of the fixed box 1, a screw rod 4 with one end penetrating and extending to the right of the right support rod 3 is rotatably connected to the left of the left support rod 3, the output end of the motor 2 is in transmission connection with the outer portion of the screw rod 4 through a transmission belt 5, a first belt pulley is fixedly installed at the output end of the motor 2, a second belt pulley is fixedly installed at the outer portion of the screw rod 4 and is positioned right below the first belt pulley, the first belt pulley and the second belt pulley are both adapted to the transmission belt 5, two thread sleeves 6 are connected to the outer threads of the screw rod 4 and are respectively positioned at one side of the two support rods 3 opposite to each other, two guide rods are fixedly installed at the bottom end of the inner cavity of the fixed box 1 and are respectively positioned at one side of the two support rods 3 opposite to each other, a sliding sleeve which is connected with the outside of the guide rod in a sliding way is fixedly arranged at the bottom end of the threaded sleeve 6, a vertical rod 7 with one end penetrating and extending to the top end of the fixed box 1 is fixedly arranged at the top end of the fixed box 1, two through holes are arranged at the top end of the fixed box 1, two vertical rods 7 are respectively and movably connected inside the two through holes, the outer diameter of the screw rod 4 is equally divided into two sections, the directions of the two sections of outer thread diameters are opposite, a movable sleeve 8 is sleeved outside the vertical rod 7, two limiting grooves are arranged outside the upper part of the vertical rod 7, two limiting rods which are matched with the limiting grooves are fixedly arranged inside the movable sleeve 8, a C-shaped seat 9 is fixedly arranged on one opposite side of each movable sleeve 8, a threaded rod 10 with one end penetrating and extending to the inner side of the C-shaped seat 9 is connected with the top end of the C-shaped seat 9 through a threaded rod, and a clamping plate 11 is fixedly arranged at the bottom end of the threaded rod 10, the two C-shaped seats 9 are fixedly provided with connecting plates 12 on the opposite sides, electromagnets 13 are fixedly arranged on the opposite sides of the two connecting plates 12, two supporting plates 14 which are respectively positioned on the opposite sides of the two vertical rods 7 are fixedly arranged at the top ends of the fixed boxes 1, a hydraulic push rod 15 is fixedly arranged at the right end of the left supporting plate 14, an installation frame 16 is fixedly arranged at the output end of the hydraulic push rod 15, an electric push rod 17 is fixedly arranged at the top end of an inner cavity of the installation frame 16, a pressure sensor 18 is fixedly arranged at the output end of the electric push rod 17, a rubber sleeve is sleeved outside the pressure sensor 18 and is in contact with the outside of a stressed object when force is applied, a controller is fixedly arranged on the front surface of the supporting plate 14, the motor 2, the electromagnets 13, the hydraulic push rod 15, the electric push rod 17 and the pressure sensor 18 are all electrically connected with the controller, and the controller is a single chip microcomputer, when the clamping device is used, a stressed object can be placed between the opposite sides of the two movable sleeves 8, when the stressed object is clamped, the clamp matched with the stressed object can be selected according to the shape of the stressed object, when the edge of the stressed object is rectangular, the stressed object can be placed between the opposite sides of the two C-shaped seats 9, the motor 2 is started to run in the forward direction, the output end of the motor 2 drives the screw rod 4 to rotate through the transmission belt 5, the outer diameter of the screw rod 4 is divided into two sections equally, the two threaded sleeves 6 can move towards the opposite sides, the two C-shaped seats 9 can move towards one end of the stressed object, when the inner sides of the two C-shaped seats 9 are completely contacted with the edge of the stressed object, the running of the motor 2 can be stopped, the threaded rod 10 can be rotated at the moment, the threaded rod 10 drives the clamping plate 11 to move downwards, and the outer part of the stressed object can be firmly clamped, when the edge of the stressed object is in an irregular shape, the movable sleeve 8 can be pulled out upwards, the movable sleeve 8 is rotated to one hundred eighty degrees and sleeved with the outer part of the vertical rod 7 again, so that the stressed object can be placed between the opposite sides of the two electromagnets 13, the forward operation of the motor 2 can be started according to the same method, when the edge electromagnets 13 of the stressed object are contacted, the operation of the motor 2 can be stopped, the electromagnets 13 are electrified, the electromagnets 13 are adsorbed on the outer part of the stressed object, the applicability of the stressed object can be enhanced by arranging two clamping modes, the electric push rod 17 can be started after the stressed object is fixed, the electric push rod 17 drives the pressure sensor 18 to apply force to the stressed object, the change of the external shape or structure of the stressed object can be observed, and the change can be connected with a mechanical analyzer to analyze stress strain, meanwhile, the pressure sensor 18 can detect the size of the applied force, the size of the applied force can be displayed through a screen on the controller, so that the relation between the size of the applied force and the change of a stressed object can be more visually shown, meanwhile, the hydraulic push rod 15 is arranged, the force can be applied to different positions of the hydraulic push rod, and the hydraulic push rod has the advantages of being high in applicability and capable of visually observing the change of mechanical properties.

To sum up, the structure mechanics teaching aid can place a stressed object between two opposite sides of two movable sleeves 8 when in use, can select a clamp matched with the stressed object according to the shape of the stressed object when clamping the stressed object, can place the stressed object between two opposite sides of two C-shaped seats 9 when the edge of the stressed object is rectangular, starts the motor 2 to operate in the forward direction, drives the screw rod 4 to rotate through the transmission belt 5 at the output end of the motor 2, because the outer diameter of the screw rod 4 is equally divided into two sections, the two threaded sleeves 6 can move towards the opposite sides, thereby moving the two C-shaped seats 9 towards one end of the stressed object, when the inner sides of the two C-shaped seats 9 are completely contacted with the edge of the stressed object, the motor 2 can stop operating, at the moment, the threaded rod 10 can be rotated, so that the threaded rod 10 drives the clamping plate 11 to move downwards, thereby the outside of the stressed object can be firmly clamped, when the edge of the stressed object is in an irregular shape, the movable sleeve 8 can be upwards pulled out, the movable sleeve 8 is rotated to one hundred eighty degrees and is sleeved with the outside of the vertical rod 7 again, so that the stressed object can be placed between the opposite sides of the two electromagnets 13, the motor 2 can be started to operate in the forward direction according to the same method, when the edge electromagnets 13 of the stressed object are contacted, the motor 2 can be stopped to operate, the electromagnets 13 are electrified, the electromagnets 13 are adsorbed on the outside of the stressed object, through the arrangement of two clamping modes, the applicability of the stressed object can be enhanced when the stressed object is fixed, the electric push rod 17 can be started after the fixed stressed object is finished, the electric push rod 17 drives the pressure sensor 18 to apply force to the stressed object, and the change of the external shape or structure of the stressed object can be observed, this change can connect mechanical analysis machine and carry out stress and strain's analysis, pressure sensor 18 can detect out the size of the application of force simultaneously, the screen display on this application of force size accessible controller comes out, thereby can be more audio-visual demonstrate the relation between the produced change of application of force size and atress object, be provided with hydraulic push rod 15 simultaneously, be convenient for carry out the application of force to its different positions, possess the suitability strong and can audio-visual advantage of observing the mechanical properties change, the mechanical properties of the unable audio-visual different positions of observing same atress object of current mechanics teaching aid when using has been solved, there is certain limitation in the use, and when fixed atress object, can't fix the centre gripping to the object of different shapes, the lower problem of suitability.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a structural mechanics teaching aid, includes fixed case (1), its characterized in that: the inner cavity top end of the fixed box (1) is fixedly provided with a motor (2), the inner cavity bottom end of the fixed box (1) is fixedly provided with two support rods (3), the left of the support rods (3) is rotatably connected with a screw rod (4) with one end penetrating through and extending to the right of the support rod (3), the output end of the motor (2) is in transmission connection with the outer part of the screw rod (4) through a transmission belt (5), the outer part of the screw rod (4) is in threaded connection with two thread sleeves (6) which are respectively positioned on one side of the back of the support rod (3), the top end of each thread sleeve (6) is fixedly provided with a vertical rod (7) with one end penetrating through and extending to the top end of the fixed box (1), the outer part of each vertical rod (7) is sleeved with a movable sleeve (8), and the opposite one side of each movable sleeve (8) is fixedly provided with a C-shaped seat (9), the top end of the C-shaped seat (9) is in threaded connection with a threaded rod (10) with one end penetrating and extending to the inner side of the C-shaped seat (9), a clamping plate (11) is fixedly arranged at the bottom end of the threaded rod (10), connecting plates (12) are fixedly arranged on the opposite sides of the two C-shaped seats (9), electromagnets (13) are fixedly arranged on the opposite sides of the two connecting plates (12), the top end of the fixed box (1) is fixedly provided with two supporting plates (14) which are respectively positioned at the back sides of the two vertical rods (7), the right end of the supporting plate (14) at the left side is fixedly provided with a hydraulic push rod (15), the output end of the hydraulic push rod (15) is fixedly provided with a mounting frame (16), an electric push rod (17) is fixedly arranged at the top end of the inner cavity of the mounting frame (16), and the output end of the electric push rod (17) is fixedly provided with a pressure sensor (18).

2. A structural mechanics teaching aid according to claim 1, wherein: the output fixed mounting of motor (2) has first belt pulley, the outside fixed mounting of lead screw (4) has the second belt pulley that is located under the first belt pulley, first belt pulley and second belt pulley all with driving belt (5) looks adaptation.

3. A structural mechanics teaching aid according to claim 1, wherein: the inner chamber bottom fixed mounting of fixed case (1) has quantity for two and is located two respectively bracing piece (3) the guide bar of one side mutually away from the body, the bottom fixed mounting of thread bush (6) has sliding connection in the outside sliding sleeve of guide bar.

4. A structural mechanics teaching aid according to claim 1, wherein: the fixed box (1) top is seted up quantity and is two the through-hole, two the inside difference swing joint of through-hole has two montants (7), the outer screw diameter of turnbuckle (4) is equallyd divide into two sections, and the orientation of two sections outer screw diameters is opposite.

5. A structural mechanics teaching aid according to claim 1, wherein: the limiting grooves with the number of two are formed in the outer side of the upper portion of the vertical rod (7), and the limiting rods with the number of two and matched with the limiting grooves are fixedly mounted on the inner side of the movable sleeve (8).

6. A structural mechanics teaching aid according to claim 1, wherein: the front surface fixed mounting of backup pad (14) has the controller, motor (2), electro-magnet (13), hydraulic push rod (15), electric putter (17) and pressure sensor (18) all with controller electric connection, the controller is the singlechip.

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