CN103680260B - Logistics is from the teaching aid to table algorithm - Google Patents

Abstract

The invention discloses a teaching aid for logistics from-to table algorithm, comprising a magnetic pallet (2) and several magnetic unit blocks (1) adsorbed on the magnetic pallet (2), the magnetic unit blocks (1) Arranged in a matrix, the magnetic unit block (1) is the magnetic unit block (1) that can be written on it. The invention solves the teaching problems of teachers repeatedly drawing tables with the help of blackboards and chalks, drawing after erasing, and erasing after erasing. The invention has an intuitive structure, is environmentally friendly, has no harm to the health of teachers, saves the cost of chalk, etc., and has high efficiency and occupies the classroom. The teaching time is short, and it is not affected by conditions such as classroom blackboards; the greater the amount of calculation or the more times of calculation, the better the comprehensive benefits.

Description

A Teaching Aid for Algorithm of From-to Table in Logistics

technical field

The invention relates to a teaching aid, especially a teaching aid for logistics from-to table algorithm.

technical background

From to table is a knowledge point in the course "Logistics Analysis and Facility Planning" of industrial engineering majors in colleges and universities. In traditional teaching, teachers often need to use the blackboard to draw tables to complete the calculation. During the calculation process, one is due to some parts or materials. There are a lot of production equipment involved. Second, due to the need to optimize and adjust the existing production process, the teacher needs to draw multiple from-to tables on the blackboard during the calculation process. In addition, the capacity of the blackboard is limited. It needs to be wiped and updated continuously. These tasks take up a lot of teaching time. Moreover, after one calculation, the teacher inhales a lot of dust and stains the clothes. The next time the calculation is performed, it needs to be repeated. In short, it is cumbersome, time-consuming, and relies on the blackboard. Big, more consumption of chalk.

Contents of the invention

The technical problem to be solved by the present invention is that it is cumbersome and time-consuming to write on a blackboard when explaining the logistics from-to table algorithm in the prior art, and it depends heavily on the blackboard and consumes a lot of chalk.

In order to solve the above problems, the technical scheme adopted in the present invention is as follows:

The teaching aid for logistics from-to table algorithm of the present invention comprises a magnetic pallet and several magnetic unit blocks adsorbed on the magnetic pallet, the magnetic unit blocks are arranged in a matrix, the magnetic unit blocks are squares with equal thickness, and have magnetic , can be adsorbed on the magnetic pallet, and can write on it. The teaching aid of logistics from to table adopting this structure can move the magnetic unit block at will, which saves the process of drawing the table and wiping the blackboard.

As an improvement of the present invention, the magnetic unit block is set as a hollow magnetic unit block, and sockets are formed on the side of the magnetic unit block. The socket is provided with a cutting strip whose length is longer than the side line of the magnetic supporting plate and whose width is smaller than the width of the socket, and can be extracted at will.

As an optimal solution, the inside of the magnetic unit block is a "ten"-shaped hollow structure, and there are four sockets on the four sides of the magnetic unit block. The socket width is slightly narrower than the distance between the two baffles, slightly wider than the cutting strip width, and the socket height is slightly higher than the cutting strip thickness. When using the teaching aid of logistics from to table with this structure, the cutting strip can be inserted into the socket to move the magnetic unit blocks in a row or in a row.

As another improvement of the present invention, the teaching aid of logistics from to the table also includes a diagonal elastic line connecting the two magnetic unit blocks at opposite corners on the magnetic pallet, and the diagonal elastic line connects the entire magnetic unit The block (1) matrix is divided into two parts, the lower left part and the upper right part, which are convenient for calculation.

As the third improvement of the present invention, the teaching aid of logistics from to table also includes pallet handles arranged on the front side of the magnetic pallet and the edges of the left and right sides. The pallet handle is composed of several baffles, each A baffle is arranged in the middle of two adjacent magnetic unit blocks, and the socket is exposed outside the baffle. The teaching aid of logistics from to table adopting this structure can not only fix the magnetic unit block on the magnetic pallet, but also prevent the magnetic unit block from slipping off.

As the fourth improvement of the present invention, the logistics watch also includes support rods arranged under the left and right sides of the magnetic pallet and support plates arranged under the front of the magnetic pallet. The teaching aid of the logistics table with this structure can be supported on a plane or tilted or hung on a facade, such as a blackboard, to facilitate demonstration to students.

The invention solves the teaching problems of teachers repeatedly drawing tables with the help of blackboards and chalks, drawing after erasing, and erasing after erasing. The invention has an intuitive structure, is environmentally friendly, has no harm to the health of teachers, saves the cost of chalk, etc., and has high efficiency and occupies the classroom. The teaching time is short, and it is not affected by conditions such as classroom blackboards; the more complex the calculation times (that is, the more equipment is involved from the to table) or the long-term use, the more obvious the benefits. In summary, the present invention is simple to use, saves time, has no dust pollution, and does not need to rely on blackboards.

Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 3 is a schematic structural diagram of a magnetic unit block in Embodiment 2 of the present invention.

Fig. 4 is a schematic structural diagram of Embodiment 3 of the present invention.

Fig. 5 is a schematic structural diagram of Embodiment 4 of the present invention.

Detailed ways

Example 1

As shown in Figure 1, the teaching aid of the logistics from-to table algorithm in this embodiment includes several magnetic unit blocks 1 arranged on a magnetic pallet 2. The magnetic pallet 2 has certain magnetism and can absorb magnetic tiles laid on it. The unit block 1, the magnetic unit block 1 is a square magnetic unit block with the same size, the back side is magnetic, and the front side can be written on with a pen. The magnetic unit block 1 tiled on it forms a matrix of magnetic unit block 1 from to (n+3)×(n+3), where the second magnetic unit block in the first row to the (n+1)th The first magnetic unit block and the second magnetic unit block to the (n+1)th magnetic unit block in the first column correspond to different devices from to the table, and the n+2th row (column) is the weight of a group of parts (the weight is equal to the weight product of each part), and the n+3th row (column) is the sum of the penalty points from the to table. During the calculation, it is only necessary to insert the corresponding row or column through the insert strip 4, and move the magnetic unit block 1 of the entire row or column without wiping the blackboard.

Example 2

As shown in FIGS. 2 to 3 , the teaching aid for the logistics from-to table algorithm in this embodiment is basically the same in structure as the teaching aid for the logistics from-to table algorithm shown in FIG. 1 . The difference is that the magnetic unit block 1 is a hollow magnetic unit block, and the socket 3 is formed on the side of the magnetic unit block 1 . Preferably, the magnetic unit block 1 can be set as an inner cross hollow magnetic unit block, and four sockets 3 are formed on the four sides of the magnetic unit block 1, and the same direction sockets 3 of each magnetic unit block 1 are connected, and in the socket 3 It is provided with a cutting strip 4 that is longer than the edge of the magnetic pallet and has a smaller width than the width of the socket, which can be extracted at will. When in use, if a whole row or column of mobile magnetic unit blocks is required, the inserting strips only need to be inserted into the sockets of the magnetic unit blocks to move, which saves the trouble of taking the mobile magnetic unit blocks one by one.

A diagonal elastic wire 5 connecting two magnetic unit blocks 1 at opposite corners is also provided on the magnetic pallet 2 . The diagonal elastic line 5 connects the magnetic unit block 1 located in the first row and the first column on the magnetic pallet with the magnetic unit block 1 in the penultimate second row and the second column, and divides the entire magnetic unit block (1) matrix into For the lower left part and the upper right part, the penalty points on the upper right of the diagonal elastic line are calculated once when used. The penalty points on the lower left indicate that the material moves backwards. Therefore, it is necessary to double or multiply by 2 to determine the row and column corresponding to the maximum penalty points. It is clear clear.

Example 3

As shown in FIG. 4 , the teaching aid of the logistics from-to table algorithm in this embodiment has basically the same structure as the teaching aids of the first two kinds of logistics from-to table algorithms. The difference is that the teaching aid for the logistics from-to table algorithm also includes pallet handles arranged on the front side of the magnetic pallet 2 and the edges on the left and right sides. The edge of the supporting plate is composed of several blocking pieces 6, which are concave and convex. Each blocking piece 6 is arranged in the middle of two adjacent magnetic unit blocks 1, and the socket 3 of the magnetic unit block 1 is exposed outside the blocking piece 6. In addition, two corner stoppers 6 are provided at the front two corners of the magnetic pallet 1 . The magnetic unit block can be fixed on the magnetic supporting plate by setting the edge of the supporting plate to prevent the magnetic unit block from slipping.

Example 4

As shown in FIG. 5 , the teaching aid of the logistics from-to table algorithm in this embodiment is basically the same in structure as the teaching aids of the above-mentioned several logistics from-to table algorithms. The difference is that the teaching aid for the logistics from-to table algorithm also includes support rods 7 arranged under the left and right sides of the magnetic pallet 2 and a support plate 8 arranged under the front of the magnetic pallet. By setting the supporting rods and the supporting boards, the teaching aids of logistics from to table algorithm can be placed on a plane or tilted or hung on a vertical surface, such as a blackboard, which is convenient for demonstration to students.

The various embodiments of the present invention have been described above in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. For example, the shape of the magnetic unit block is not fixed, and can be rectangular or circular. Similarly, the internal hollow shape of the magnetic unit block is not limited to a cross-shaped hollow, and other hollow shapes, such as a straight shape, can also be used. In a word, even if various changes are made to the present invention, as long as the teaching aid of logistics from to table algorithm adopts the structure of several magnetic unit blocks arranged on the magnetic pallet, it still falls within the protection scope of the present invention.

Taking the calculation process of the 11×11 from-to table as an example, a group of 5 parts has different processing procedures, but 8 sets of equipment are used. The daily output, unit weight and logistics route of each part are known. Table 2, the adjustment and improvement of the equipment planning process, from the table to the improvement calculation steps, please refer to the attached table 3, attached table 4, attached table 5 and attached table 6. Respectively in (one) class and (two) class do the same example calculus, respectively on the blackboard with the method of traditional hand-drawn table and the teaching aid of logistics from to table algorithm of the present invention is carried out to this embodiment calculus, to two kinds of methods used For the comparison of teaching time, the collected data is averaged and summarized in Table 1.

Attached table 1: Comparison of the time taken by the two methods of 11×11 from-to table calculation Unit: second Calculate once (attachment 3) Calculus secondary (Schedule 4) Calculations three times (Schedule 5) Calculations four times (Schedule 6) consume chalk hand drawn table 190 390 570 820 (60 seconds to wipe the blackboard once) 2.0 sticks Use this teaching aid 58 108 158 200 0

It can be seen from the attached table 1 that under the premise of completing the same teaching progress and goals, the teaching time is greatly shortened by using the present invention, 0 pieces of chalk are consumed, and teaching costs are saved; The more equipment involved in the table) or the more calculation times, the present invention can show the advantages of higher time efficiency and economic efficiency.

Schedule 2: Known set of parts and related information Part Number Daily production volume/piece weight/kg Production process (sequence of operations) relative importance/weight 1 ^# 2000 1 ZBCEDGX 1 2 ^# 2000 18 ZCEDBX 18 3 ^# 2000 1 ZFGCBDEX 1 4 ^# 2000 30 ZGBDEX 30 5 ^# 2000 7.5 ZDBEX 7.5

Note: Z indicates the raw material inlet; X indicates the production line outlet; B, C, D, E, F, G indicate the equipment used for each operation.

Attached Table 3: From the calculation step 1 to the show - the logistics route of the 5 parts

Attached Table 4: Calculation step 2 from the performance to the performance—analysis of the logistics route of the 5 parts represented by the number of penalty points

Attached Table 5: Step 3 of From-To Table Calculation——Improvement of Logistics Routes for 5 Parts on From-To Table

Attached Table 6: Calculation step 4 from the to table—re-improvement of the logistics route of the 5 parts on the table

.

Claims (6)

1. A teaching aid for logistics from-to table algorithm, characterized in that it comprises a magnetic pallet (2) and several magnetic unit blocks (1) adsorbed on the magnetic pallet (2), the magnetic unit blocks ( 1) Arranged in a matrix, the magnetic unit block (1) is a magnetic unit block (1) that can be written on it; the magnetic unit block (1) is a square magnetic unit block; the magnetic unit block (1) is hollow inside The magnetic unit block forms a socket (3) on the side of the magnetic unit block. 2. The teaching aid of logistics from-to table algorithm according to claim 1, characterized in that: the magnetic unit block (1) is a cross-shaped hollow magnetic unit block inside, and four sockets are formed on the four sides of the magnetic unit block ( 3). 3. The teaching aid for logistics from-to table algorithm according to claim 2, characterized in that: it also includes a cutting strip (4) that can be inserted into the socket, the cutting strip is longer than the edge of the magnetic pallet, and the width of the socket is larger than two The distance between the baffles is slightly narrower, slightly wider than the width of the cuttings, and the height of the socket is slightly higher than the thickness of the cuttings. 4. The teaching aid of logistics from-to table algorithm according to claim 1, characterized in that it also includes a diagonal elastic connecting two magnetic unit blocks (1) at opposite corners on the magnetic pallet (2) The line (5) divides the entire matrix of the magnetic unit block (1) into two parts, the lower left part and the upper right part. 5. The teaching aid of logistics from-to table algorithm according to claim 1, characterized in that: it also includes pallet handles arranged on the front side of the magnetic pallet (2) and at the edges of the left and right sides, and the pallet handles The side is composed of several baffles (6), each baffle (6) is arranged in the middle of two adjacent magnetic unit blocks, and the socket is exposed outside the baffle (6). 6. The teaching aid of logistics from-to table algorithm according to claim 1, characterized in that: it also includes support rods (7) arranged under the left and right sides of the magnetic pallet (2) and the magnetic pallet (2) 2) The pallet support plate (8) under the front.